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Confidence building in emerging stock markets
Perotti, E.C.; Laeven, L.; van Oijen, P.
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2000
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Perotti, E. C., Laeven, L., & van Oijen, P. (2000). Confidence building in emerging stock
markets. (William Davidson Institute Working Papers Series; No. 366). University of Michigan
Business School, William Davidson Institute.
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Download date:21 Dec 2022
Confidence Building in Emerging Stock Markets
By: Enrico C. Perotti, Luc Laeven, and Pieter van Oijen
Working Paper No. 366
December 2000
Confidence Building
in Emerging Stock Markets
Enrico C. Perotti
University of Amsterdam and CEPR
Luc Laeven
World Bank
Pieter van Oijen
University of Amsterdam
December 2000
Abstract: Investor confidence is a major determinant of financial integration for emerging
markets and their stock prices. We investigate whether privatization also has a significant
effect on emerging stock market development through the resolution of policy risk. We argue
that a sustained privatization program represents a major test of political commitment to
market oriented reforms and to safer private property rights. The evidence suggests that
progress in privatization gradually leads to increased confidence as measured by perceived
policy risk. Moreover, increased confidence has a strong effect on local market development
and excess returns. We conclude that, while liberalization is a necessary condition for market
development, the resolution of policy risk resulting from successful privatization has been an
important source for the rapid growth of stock markets in emerging economies.
Acknowledgements: We thank Andrei Shleifer, Sheridan Titman, Bernard Dumas, and
participants at the Tuck School-JFE Conference on Corporate Governance and seminars at the
World Bank, HEC, and INSEAD for useful comments.
Introduction
Stock markets in many emerging countries have developed rapidly during the last
decade. Market capitalization in countries classified by the IFC as emerging markets has risen
from $488 billion in 1988 to $2,439 billion by mid-1999, while annual trading on their
exchanges has risen from $411 billion in 1988 to $2,486 billion by mid-1999 (IFC, 1999).
Unquestionably, a major impulse to market development has come from financial integration
(Stulz, 1999). There is now direct evidence that the onset of financial liberalization directly
promotes market development and reduces the required cost of capital (Henry, 2000; Bekaert
and Harvey, 2000). Yet liberalization is a necessary rather than a sufficient condition for
integration; and there is some evidence that integration takes place gradually. Henry (2000)
reports that the one-month excess return in response to the announcement of liberalization is
around 6 %, while the cumulated excess is 26 % in a 8-month window. While these gains are
significant, the increase in value and volume has been much larger; moreover, excess returns
persist after the announcement. Additionally, some liberalized markets fail to attract much
investment.1
This raises the question what brings about the evolution of confidence that leads
investors to invest progressively more in emerging stock markets. This paper seeks to explore
the importance of confidence building through the resolution of perceived policy risk as a
determinant of capital market development, and the role of privatization in promoting such
confidence.
1
Bekaert and Harvey (2000) indicate that foreign capital inflows are rather gradual around the date of
liberalization; in the case of a crisis, outflows are much faster.
Privatization has well known direct benefits such as improved incentives and
efficiency,2 a reduction in public debt, better access to capital and technology, and increased
integration of local firms in international trade patterns. Privatization sales may also produce
benefits for local stock markets if new listings have substantial impact on local liquidity, and if
new listings offer opportunities for local investors to diversify their portfolios (Pagano, 1989
and 1993b). These gains in market deepening and broadening could of course be the result of
new private listings as well; hence, there is no specific role here of privatization.
Many emerging countries carried out privatization sales through public offerings on the
local stock exchange, leading to significant increases in market capitalization. However, the
direct effect of privatization (total sale revenue of $154.5 billion in 1988-1996, inclusive of
private sales) on stock market development represents only a small fraction of the increase in
market capitalization over that period.3 Thus, although privatization appears to be associated
with stock market development, the recent magnitude of local market development by far
exceeds their direct impact.
In this paper, we will argue that the successful transfer of important enterprises from
state to private control has strong implications for the general perception of equity investment
particularly in emerging economies, and that privatization thus indirectly promotes stock
market development through a resolution of policy risk. Privatization, since it involves a
retreat of political forces from the governance of economic activity, is an ideal test for political
commitment to market-oriented reforms, as it severely tests the determination of policymakers
to resist any political backlash after the sale (Perotti, 1995). Politicians, used to have
discretionary control over the firm’s activities, see their capacity to dictate policy and
2
For an assessment of welfare gains from privatization see Galal et al. (1994). For evidence on
efficiency gains see Claessens and Djankov (1997) and Boubakri and Cosset (1998).
3
In addition, many privatization transactions were not carried out through public share issues and some
of them took place in countries not classified by the IFC as an emerging market.
2
reallocate resources to their preferred constituencies sharply curtailed. In this shift of control
rights to private owners lies the main cause of improved performance of firms under private
ownership.4 Yet no sovereign government can credibly commit not to alter its policy after a
sale. Therefore, only a sustained and consistent privatization policy establishes investors'
confidence. In fact, recent theoretical work suggests that a maintained privatization program
may by itself help to strengthen the political forces in favor of market-oriented reforms (Biais
and Perotti, 2001; Schmidt, 1997).
Our argument has various testable implications. First, large privatization sales in some
developing countries should have improved their perceived policy risk both in absolute terms
and relatively to non-privatizing emerging markets. Second, such shifts in policy risk would
affect the attractiveness of equity investments and therefore be related to stock market
development. Third, stock markets in countries which pursued consistent privatization policies
would exhibit excess stock returns, earning ex post “peso premium” as a result of the
favorable news that drove the confidence building process, which is a form of learning.
We first show that in a dynamic model of policy risk resolution, stock prices rise
gradually in parallel with investor confidence; the excess returns gained represent the
compensation for the risk of a large capital loss in case of a policy reversal.5 This resolution of
policy uncertainty due to privatization may occur even if sales do not take place through
public share offerings.
Secondly, we document how policy risk has developed over the different stages of the
privatization programs of 22 emerging economies. We hereby focus on countries that have
privatized extensively over a number of years after 1987, using different proxies of policy risk.
4
The constitutional guarantee of property rights makes them residual with respect to contractual and
legal obligations; thus, legislation may chip away at the owner's entitlement, but it can never fully expropriate
them (Perotti, 1995).
5
For a related approach to foreign investment, see Cherian and Perotti (2000).
3
We contrast their stock market development with a control sample of non-privatizing markets.
We find that many emerging countries have gradually reduced their policy risks during the
course of sustained privatization. Privatization often starts at a time of declining credibility.
Thereafter, perceived policy uncertainty is resolved only upon actual implementation of
privatization, as opposed to its announcement. In fact, much risk resolution seems to take
place as privatization proceeds to its later stage. This suggests that a sustained privatization
policy represents a major political test which gradually resolves uncertainty over the political
commitment to a market-oriented policy.
We then assess the importance of policy risk for stock market development in
emerging economies by relating changes in stock market development proxies to liberalization
and to changes in policy risk. Changes in policy risk are strongly associated with growth in
stock market capitalization, traded value and excess returns, even more than the onset of
financial liberalization. The economic impact of changes in policy risk on stock market
development appears to be very large. Taken together, these results suggest that the resolution
of policy risk through sustained privatization has been an important factor in the recent
emergence of the stock markets of developing countries.
In an earlier paper, Perotti and van Oijen (2000) have already established the empirical
regularity that the resolution of political risk contributes to stock market development. This
paper expands on the work by Perotti and van Oijen (2000) in a number of ways. First of all,
we explicitly model the confidence building that arises from a sustained privatization program
and show how this promotes stock market development. We therefore more clearly describe
the fundamental link between privatization, policy risk and stock market development.
Secondly, we introduce a number of refinements in analyzing the empirical relation between
policy risk and stock market development. These refinements include the use of instrumental
4
variables to deal with potential endogeneity problems in the estimation of the empirical
relationship between policy risk and stock market development, the use of an indicator of
policy risk that conforms more closely to our specific notion of policy risk, and the inclusion
of financial liberalization as a control variable that has been shown to contribute to stock
market development as well.
The relevance of policy risk for privatization that we document is consistent with
results reported by Jones et al (1999). They show that the share allocation and sale price in
IPOs from privatizations are sensitive to political considerations. Our result that policy risk
resolves gradually is also consistent with the puzzling findings that privatization IPOs appear
to outperform matched control groups (Megginson et al 1998).6
Our analysis on the influence of policy risk on stock market development is closely
related to recent research on the link between the legal institutional framework and corporate
finance. LaPorta et al (1997, 1998) find that countries with lower quality of legal rules and law
enforcement have smaller and narrower capital markets and that the listed firms on their stock
markets are characterized by more concentrated ownership. Demirgüç-Kunt and Maksimovic
(1998) show that firms in countries with high ratings for the effectiveness of their legal
systems are able to grow faster by relying more on external finance. By looking at the relation
between stock market development and policy risk (in itself an element of the quality of the
institutional framework that supports the viability of external finance), our analysis contributes
a dynamic element to this cross-country approach.
The result that policy risk has strong implications for stock market development is an
important finding from the perspective of economic growth. A growing empirical literature
suggests that the development of financial markets support economics growth. Levine and
6
In related research, de Jong and Perotti (2000) attribute this result to the greater sensitivity of these
stocks to policy risk. They confirm that this effect vanishes after the IPO, as policy risk gradually declines.
5
Zervos (1998) find that stock market variables such as market capitalization over GDP, traded
value over GDP, and various measures of asset mispricing help predict economic growth.7
Our results have direct implications for the analysis of international financial
integration as well. Bekaert (1995) provides evidence that higher levels of policy risk are
related to higher degrees of market segmentation. Erb, Harvey and Viskanta (1996a) show
that in both developing and developed countries, the lower the level of policy risk, the lower
are required stock returns. Together with our results, it appears that policy risk is a priced
factor; a fall in such a risk encourages financial integration and reduces the local cost of equity.
We should stress that we take a broad notion of policy risk, which includes the earlier
notion of expropriation risk (Eaton and Gersowitz, 1984), the notion of policy risk in the
privatization and regulation literature, and the notion of protection of investor rights implicit in
the work by LaPorta et al. (1997, 1998). All these risk factors are included in our proxies.
The outline of the paper is as follows. In Section I we discuss the argument for a
fundamental link among privatization, policy risk and stock market development. In Section II
we present suggestive evidence that successful privatization gradually reduces policy risk.
Section III documents the empirical relation between policy risk and stock market
development in emerging economies. We offer some concluding remarks at the end.
Section I
Privatization, Policy Risk and Stock Market Development
While a successful privatization program requires institutional changes that
contribute to the strengthening of the legal framework underlying equity investment, private
control and policy reforms must be maintained during a political backlash. As a consequence,
market deepening will occur only as confidence builds up over time as a result of the actual
7
See Pagano (1993a) and Levine (1997) for an overview of the literature.
6
progress of privatization and not upon its announcement. Thus our conjecture is that only a
steady actual implementation of the program contributes to the a build up of confidence in a
an environment with less state interference, leading to higher investment and trading. This may
explain why privatization may even precede successful stock market development. Alternative
benefits of privatization, such as improved risk sharing and increased liquidity of the market as
a result of new listings, would cause an immediate and discrete effect on market indicators.
There is a tradition of policy risk even in developed economies;8 but policy risk represents
a particular dilemma for investors in emerging economies. For these countries, contractual and
institutional uncertainty is greater, due to less established institutions and policies often subject
to major discrete changes. The temptation to reverse policy changes after privatization sales is
particularly steep because many areas of traditional public ownership represent (traditional)
natural monopolies such as utilities and infrastructure. Private investment in infrastructure has
always been hindered by the high risk of ex post expropriation. Such industries possess major
fixed sunk investments, which produce a steady cash flow from users. Thus the profits
represent considerable rents or quasi rents, whose allocation to shareholders may arouse
strong political opposition from insiders or users. These examples suggest that a privatization
sale by itself does not resolve the question of policy risk, but does accelerate the process of
learning about the government's policy commitment.
We sketch in this paper a simple model of how the privatization process can progressively
establish the credibility of announced reform policy, and thus lead gradually to financial
development. In our model, we assume a gradual progress of sales, which is in accordance
with the facts. Perotti and Guney (1993) document that sale programs are initially gradual,
even when retained stakes are explicitly targeted to be sold over a few years. Proceeds from
privatization increase over time, suggesting gradual selling calibrated to build investors
7
confidence. As policy credibility increases, larger initial sales become more common. Perotti
(1995) presents the argument that privatization sales need to be gradual (while securing an
immediate transfer of control) so that confidence on a stable policy towards privatized
companies can be firmly established, thus enhancing future revenues. Underpricing may also
serve as a complementary signal of commitment.
A successful privatization program also leads to a resolution of contractual and legal
uncertainty and often include greater protection of minority shareholders.9 While there may be
resistance from established interests to improvements in such rules, as they may enhance entry
(Rajan and Zingales, 2000), the necessity to attract investors often leads to more reliable
supervision, the promotion of better accounting standards and transparent disclosure rules, the
support of procedures to contest managerial decisions. Additional steps often involve
removing restrictions on dividend repatriation, foreign ownership and competitive entry, and a
reduction in the legal and fiscal bias historically favorable to public sector borrowing. 10
In the next sections we explore empirically whether the progress of privatization is
associated with a reduction in policy risk and whether such policy risk is important for market
development. As we expect policy risk resolution to be particularly relevant for developing
countries, we focus on emerging markets, in part to understand to what extent risk resolution
resulting from sustained privatization may have contributed to the recent boom in emerging
stock markets. In Section II we sketch a basic model on how a maintained privatization
program results in confidence building; we then discuss the relevance of policy risk and
liberalization for emerging market development. Section III analyses the empirical impact of
8
See Jones et al, 1999, on NTT in Japan, and Grandy (1989) for the US.
La Porta et al. (1997,1998) and Modigliani and Perotti (1999) show that a strong institutional
framework of "rules of the game" is necessary to protect minority investors and thus to promote the
development of security markets.
10
A final benefit of privatization is that it makes regulatory policy more subject to public scrutiny,
which allows a transparent public debate and increased reliance on legal, as opposed to administrative,
recourse. Such public visibility of policy also contributes to reduced policy ambiguity.
9
8
the resolution of policy risk through sustained privatization on stock market development. At
the end we offer some concluding remarks and some ideas for future research.
A simple model
A privatizing government gains from selling a sequence of N previously state-owned
firms over T periods; time is indexed by t = 0, 1,.. N, ..T.11 We assume that the government
sells one firm per period, at a price ^t , until all N firms are sold. Sales increase state revenues,
because of the enhanced value of the firms under private ownership. We assume that firms
have value 1 under private ownership and 0 under state control, with all payoffs realized at
time T. In addition, the government gains a political benefit of control c at time T from each
firm under state ownership. As a result, it will sell state-owned firms only for a positive price.
In each period, after the government sold another firm, it may consider reversing the
transition of control to the private sector to capture some political advantage. This choice
affects the price of all domestic assets, as their ultimate payoff and risk profile depends on the
actual degree of protection of property rights. Thus the incentive to invest in risky assets and
the required return depends on confidence on the government policy.
Of course, the more firms have been sold, the greater is the temptation. Suppose that
investors are uncertain as to the government's preference on interference in privatized firms;
specifically, assume that interference allows to capture a fraction J of value from all privatized
companies, but such a policy reversal carries a privately known political cost S, distributed on
[0, B].12 Investors receive the realized firm value (either 0 or 1) at time T; as they are risk
11
This assumption can be rationalized in our framework: because the government confidence increases
endogenously over time as it refrains from intereference, revenues are larger if sales are done gradually.
However, a full formalization would involve considerable complexity. For a related model, see Cherian and
Perotti (2000).
12
Firms still in state hands have no value so they cannot be expropriated further.
9
neutral and the interest rate is zero, they are willing in each period to pay a price which equals
their expected payoff at T. The government has a discount factor N <1, reflecting a finite time
in office. Because of discounting, there are no reasons for the government to not sell a firm in
any period, so all firms which are sold will be sold as of t=N.
Investors will have an initial prior belief on the likelihood that the government will
resist the temptation to interfere. Since the highest gain from interference is to capture a
fraction J of a stock of N privatized firms after N periods, this probability as of time t equals
Po ¯ Prob (S < JN| It), where It is the information set at time t (which contains all
government choices until t).
We refer to P t as the confidence as of time t in the government's commitment to a
policy of non interference.13 Note that if the government cost S is above the threshold S* ¯ JN,
it will never choose to interfere; so we can rewrite P t as the probability that the government's S
is above S*. Investor will be willing to pay at time t a price equal to their expectation at that
date on the final value of the firm, which equals:
^ t = 1(probability of no interference) + 0 (1- probability of no interference)
= Pt = probability of a commitment government.
Notice that the return to the government of each sale at time t is ^ t - NT-tc. We assume
that Po > NTc so that the government is willing to start privatizing from the first period.
We now state a first, elementary result.
13
We assume that Po > c so that the government is willing to start privatizing from the first period.
10
Proposition I
Following a policy reversal, the credibility is zero and the government stops selling firms to
the private sector.
Proof: A reversal indicates that the government's cost of reversal S is below the critical
S*; in other words, it is not committed. Since investors then expect government interference,
firms are worthless, so the private sector will not buy any firm at a positive price. Since the
political benefit of control c is positive, the government does not sell any more firms.
On the basis of these observations, we can now state the main result of the model:
Proposition II
Governments which intend to reverse policy will time this reversal strategically to take
advantage of the uncertainty over their commitment. As a result, confidence in the
government's commitment increases as long as there is no policy reversal.
Proof: In the first date, the government prefers to sell a firm, as it gains ^o – NTc > 0
which is by assumption positive. In general, at each date a government which has some
positive credibility will always choose to sell a firm, provided that po – NT-tc > 0. After each
sale, the government may choose to interfere, capturing once and for all the partial value J for
each already privatized firm. If it interferes, from Proposition I we know that no more firms
are sold, so the payoff is simply
Jt + (N-t) NT-tc
11
which is the sum of the value captured from the t firms privatized so far plus the
political benefit of control for the rest.
If it does not interfere, this may mean that it is committed, which has a probability pt.
Alternatively, it may delay strategically the timing of interference to take advantage of more
firms and capture more sale revenues.
Thus the government will choose to interfere (after the sale) if Jt > S and
J t - S > N [J (t+1) – S + pt - NT-t-1c ].
The second inequality verifies whether it prefers to do so today or wait until tomorrow
when one more firm will be sold and thus can be captured.
Thus at time 1, if no interference took place, investors will conclude that
J - S < N [2J – S + p1 - NT-t-1c ], or
S > {J - N [2J + p1 - NT-t-1c ]}/(1-N) ¯ S1
As long as S1 > 0, this implies that investors' posterior will be updated on the
probability that the government is committed, i.e. Prob (S > S*| S > S1) > Prob (S > S*).
In general, if there is no interference as of time t, investors update their beliefs on the
government's commitment to not interfering according to
pt = Prob (S > S*| S > St) > Prob (S > S*| S > St-1) = pt-1
where St ¯ {Jt(1 - N ) - [pt - c]}/(1-N). Note that pt > pt-1 and St > St-1 for all t; the
posterior expected cost of expropriation for the government increases in each period without a
reversal, and thus does the government credibility. Thus, for each period that passes without a
reversal, the perceived probability of a reversal declines.
QED
12
The dynamics of confidence (and therefore prices), and the associated perception of
policy uncertainty over time, are illustrated in Figure 1.
Insert Figure 1 here
Moreover, note how uncertainty at first climbs fast, then rises at a decreasing rate; in a longer
game, increasing confidence leads ultimately to a fall in uncertainty.
From this simple model we conclude that confidence building results from a steady
policy vis-à-vis the transfer of control to the private sector and restrain from interference for
privatized firms. Note that the model does not imply a mechanic dependence between sales
and market development, only that confidence will be built up by (steady) privatization sales
accompanied by a stable policy; confidence will be a summary statistics for market growth.
In the next section we outline our empirical approach to explain stock market
development in a sample of emerging markets. We next test whether confidence building
through sustained privatization leads to a resolution of policy risk.
Section II
The impact of privatization on policy risk
Sample construction and methodology
We include all the countries classified by the IFC as having an emerging stock market,
and selected all those for which there are data available in the Emerging Stock Markets
Factbook from at least 1988 onwards. This leads to a sample of 31 countries.
Our hypothesis is that sustained privatization influences the development of stock
market via a progressive resolution of policy risk. There are serious issues of endogeneity to
be taken into account, as countries with stronger market development may choose to
privatize. We chose therefore to proceed in two steps.
13
The first step is to establish how policy risk is related to privatization over the medium
term. From our sample of 31 countries, we select all those countries that have been engaged in
substantial privatization sales for at least four years in the period 1988-1995. Using this
criterion, there are 22 countries that can be classified as having a significant privatization
policy.14 Note that the requirement of a sufficient history of privatization sales leads to a
sample of countries with a fairly sustained privatization program. Such countries are more
likely to be successful privatizers. However, rather than judging subjectively the quality of
each country’s privatization policy, we use measured changes in their perceived policy risk.
While on average the programs in the sample were deemed successful (as our data seem to
confirm), the sample does include countries for which the privatization process was delayed or
slowed down due to political backlash, and for which policy risk seems to have risen.15
Our second step is to test to what extent changes in policy risk during the privatization
contribute to local stock market development. To this goal we relate the stock market
development in all 31 countries in our sample to changes in their perceived policy risks. We
use growth in market capitalization, traded value, and excess stock returns as direct measures
of stock market development. We control for stock market liberalization, shown by Henry
(2000) amongst others to have a direct effect on stock market development.
In order to be able later to assess the timing of the resolution of policy risk, we also
distinguish four different stages in the privatization process.
14
There are only a few countries for which inclusion in either of the samples is ambiguous. We
neglected Costa Rica and Uruguay for our initial sample of emerging stock markets because of incomplete data
for the market capitalization or traded value on the stock market. For Israel, the World reports 15 privatization
transactions spread out over 1988 to 1995. We were unable to obtain privatization data for the years before
1988. Given the low number of transactions and the lack of data we excluded Israel as a privatizing country,
but include it in our initial sample of emerging stock markets.
15
Turkey and Venezuela are prime examples during the sample period.
14
Pre-privatization period: This period is defined as the two years before the
announcement period. It is used so as to measure announcement effects and as benchmark for
the privatization period.
Announcement period: This period includes the 2 years preceding the first actual sales,
to capture the announcement and preparation of privatization.
Early privatization period: We define this period as the years of actual start of sales up
to the year before the peak in privatization sales takes place.
Late privatization period: Includes the year of the peak in privatization revenues as
well as all following years, as long as a significant volume of privatization sales continues.
The World Bank database only records privatization transactions that took place since
1988. Therefore, for all countries which privatized in 1988 or 1989 we use other sources to
assign the beginning of the privatization program. All countries in our sample continue to
privatize up to 1994. The list of countries and the timing of their privatization stages is given
in Table 1 of Appendix 1. 16
Policy risk indicators
In this section we introduce our quantitative indicators for policy risk. The first one is
constructed by the Institutional Investor and is published twice a year. The other one is
obtained from the commercial agency International Country Risk Guide.
Both are indicators for country risk, of which policy risk is only one of the sources.
Therefore, not all of these indicators conform as closely to the specific notion of policy risk as
16
For two countries, we deviate from the definition given above, because the definition would lead to an
inappropriate classification of privatization periods. See appendix 1 for a justification for these special cases
and for the sources on which we base our classification for countries that were already engaged in privation
before the World Bank started to maintain its database.
15
defined above. We first briefly expand on how these indicators are constructed and in what
sense they are useful for our analysis of policy risk.
Institutional Investor Country Credit Rating (CCR)
This indicator is based on information provided by leading international banks and is
constructed and published by the Institutional Investor. Bankers are surveyed to grade each
country on a scale of zero to 100, where 100 represents the least chance of default. The survey
is held every 6 months.
The bankers are asked to rank them in order of importance for their credit ratings.
Table 1 in Appendix 2 provides a list of the rankings of all factors for 1979 and 1994 for
emerging countries. The CCR seems to provide a useful proxy for policy risk, as the factor
“Political Outlook” is ranked high on the list factors. Since the ratings relate to chances of
default we expect bankers to be forward looking.
The survey results are published in March and September. The March survey is based
on interviews gathered starting in November and thus reflects the general opinion prevailing
around the end of the year preceding the publication.17
International Country Risk Guide
This indicator is constructed by the commercial agency International Country Risk
Guide (ICRG) since 1984. ICRG classifies country risk into three different categories: political
risk, financial risk and economic risk. Each indicator consists of different components of
country risk, for which every country receives a score on scale of 1 to 100. These different
components are then weighted to construct the country’s rating for each category. The
17
An editor at the Institutional Investor confirmed that the March ratings are generally received during
November and December.
16
components of each of these indicators and the weight of each component for the indicator are
given in Table 2 of Appendix 2.
The policy risk indicator of ICRG, based on subjective analysis by its analysts, offers
the closest relation to our notion of policy risk. Especially the first three terms of this indicator
are interesting. “Economic Expectations vs. Reality” measures “the perceived gap between
popular aspirations for higher standards of living and the ability or willingness of the
government to deliver improvements in income and welfare”. The second term captures “the
ability of government to adopt a suitable and successful economic strategy”. “Political
leadership” assesses “the viability of the current government based on the degree of stability of
the regime and its leader, the probability of the effective survival of the government, and the
continuation of its policies if the current leader dies or is replaced”.
The financial risk indicator is based on quantitative as well as qualitative information.
Some interesting components are “Repudiation of contracts by the government”, “Losses from
exchange controls” and “Expropriation of private investments”. The other components are less
related to our notion of policy risk. The main problem of this indicator is that it is partially
based on historical information, so it may not be forward looking. Therefore, we consider this
indicator as a less attractive measure of our definition of policy risk.
The economic risk indicator is based solely on quantitative measures of current trends,
and is therefore not forward looking. Perotti and Van Oijen (2000) show that the economic
risk indicator is a poor indicator for measuring our type of policy risk.
For our analysis we construct a new indicator that combines those components from
the ICRG political and financial risk indicators that are most closely related to our notion of
policy risk. These components are “Economic Expectations vs. Reality”, “Economic planning
failures”, and Political leadership” from the ICRG political risk index, and “Repudiation of
17
contracts by the government”, “Losses from exchange controls” and “Expropriation of private
investments” from the ICRG financial risk index. We apply equal weights to these components
to construct what we call the ICRG policy risk indicator from now onwards.
Development of policy risk over the privatization programs
In this section we analyze how policy risk has developed over the privatization
programs of the 22 privatizing countries in our sample. We are particularly interested in
assessing the extent to which sustained privatization has resolved policy risk and the timing of
the resolution. In doing this, we take the following approach. For our sample of emerging
economies that we classified as having a significant privatization policy, we document the
development of the two policy risk indicators (CCR and ICRG policy risk) over the different
privatization periods. We then perform simple means tests on whether or not the resolution of
policy risk differs across privatization periods. Finally, to test whether the resolution in policy
risk is indeed endogenous to the privatization process, we compare the development of two
policy risk indicators of the countries that privatize with the improvements in policy risk in
developing countries that did not engage in privatization.
Table 1 summarizes the behavior of policy risk over time. A positive growth rate for a
risk indicator stands for a decrease in policy risk. The ICRG policy risk indicator and the CCR
on average decreased in value in the pre and announcement period, suggesting that countries
often privatize in periods of declining credibility; in contrast, they strongly improve in early
and late stages of privatization. The CCR seems most closely related to the policy risk
indicator over the privatization process.
18
Table 1: Yearly percentage improvements in policy risk over privatization periods.
CCR refers to the percentage improvements in the Institutional Investor Country Credit Risk Rating. ICRG
Policy Risk refers to percentage improvements in the policy risk indicator as constructed from the ICRG
political and financial risk indicators published by the International Country Risk Guide agency. A description
of these indicators is given in the text above. Average improvements represent the arithmetic means of the
improvements in policy risk for each period where for each period the yearly improvements are equally
weighted.
CCR
ICRG Policy Risk
Pre
Announcement
Early
Late
Pre
Announcement
Early
Late
Annual
change (%)
-2.35
-2.47
2.11
5.08
-0.49
-0.07
4.51
3.28
Standard
Deviation
10.68
9.73
7.85
8.11
5.28
9.07
11.49
8.33
Minimum
Maximum
-41.24
-37.95
-21.15
-15.43
-10.71
-19.44
-25.00
-20.00
25.64
19.42
25.90
35.43
12.82
33.33
37.50
34.15
The evolution of the CCRs and ICRG policy risk indicator are consistent with a
gradual resolution of policy risk over the privatization period. It appears that sales start on
average in periods of declining political ratings, which improve only gradually thereafter. In
other words, there is no vast gain in political credibility merely by the establishment of a
privatization program. Note that there is on average increasing confidence during the process
of privatization, suggesting that in the average sample country the privatization policy was not
reversed.
We test whether this pattern is statistically significant by studying whether the
improvements in the semi-annual credit rating of Institutional Investor (the CCR) and of the
monthly ICRG policy risk rating differ significantly across different privatization periods. The
results are given in Table 2. The CCRs and the ICRG policy risk indicator improve
significantly in early and late privatization stages; there is no evidence of an improvement in
the announcement stage, suggesting that it does not per se establish much credibility.
Moreover, the improvements in the CCR in late stages of privatization are significantly larger
than in earlier periods.18
18
We also performed Mann-Whitney (non-parametric) tests on the medians with similar results.
19
Table 2: Difference tests on changes in CCR and ICRG ratings
Semi-annual percentage changes in CCR and monthly percentage changes in ICRG ratings. A negative
difference means that the average change in the earlier period was lower than in the later period.
Paired T-Test
Mean Difference
CCR
(Semi-annual)
-0.18
***-2.40
***-3.70
***-2.22
***-3.52
**-1.30
-0.01
***-0.40
**-0.31
***-0.39
**-0.30
0.09
Pre minus Announcement
Pre minus Early
Pre minus Late
Announcement minus Early
Announcement minus Late
Early minus Late
ICRG Policy Risk
Pre minus Announcement
(Monthly)
Pre minus Early
Pre minus Late
Announcement minus Early
Announcement minus Late
Early minus Late
***
denotes significantly different from zero at the 1% level
**
denotes significantly different from zero at the 5% level
*
denotes significantly different from zero at the 10% level
t-value
0.83
-2.82
-5.33
-2.83
-5.53
-2.08
-0.08
-2.65
-2.49
-2.68
-2.47
0.75
Of course, the observed pattern in policy risk may be due to other factors than
privatization. For example, there may have been a change in perceived policy risk over the last
fifteen years shared by all non-OECD countries, independently of whether or not these
countries engaged in substantial privatization.19 To test this alternative hypothesis, we
compare changes in policy risk of the countries in the sample with those of a sample of non
privatizing countries.
We selected all developing countries from the Global Development Finance CD ROM
of the World Bank, removing all those for which the privatization database reported
privatization transactions. This resulted in a sample of 24 countries from which we constructed
a single non-privatized benchmark to compare each country’s policy risk performance.
Table 3 provides the results of a paired t-test on the difference in performance between
privatizing and non privatizing countries in each privatization period.
19
This possibility is limited by the imperfect time overlap of the various privatization periods. For
example, the year 1986 is classified as a year of early privatization for Chile, Jamaica, Malaysia and Mexico
while this year falls outside the privatization periods for all other countries. Nevertheless, 1993, 1994 and 1995
are classified as years in the late period of privatization for almost all countries.
20
Table 3: Difference in confidence building in privatizing and nonprivatizing countries.
Tests are based on semi-annual percentage changes in the Institutional Investor Country Credit Ratings (CCR)
and monthly percentage changes in International Country Risk Ratings (ICRG ).
Mean difference
t-value
(Privatizing-Benchmark)
CCR
Pre
0.57
0.94
(semi-annual)
Announcement
0.38
0.66
Early
**1.28
2.35
Late
**1.71
2.48
ICRG Policy Risk Pre
0.05
0.60
(monthly)
Announcement
-0.00
-0.00
Early
***0.29
2.91
Late
**-0.17
-2.32
***
denotes significantly different from zero at the 1% level
**
denotes significantly different from zero at the 5% level
*
denotes significantly different from zero at the 10% level
The paired tests offer clear evidence that the two samples of countries do not differ
much prior to privatization. However, the evolution of the policy risk indicators diverges in
the early and late privatization period20. In countries where privatization progresses, the CCR
measure of perceived policy risk drops significantly more than for the average emerging
country over the same period. The ICRG policy risk indicator outperforms the nonprivatization benchmark in the early privatization period, while it underperformed in the late
period. An explanation may be an exogenous reduction in pure political instability in high risk
countries during the later years which led to a large drop in the ICRG policy risk rating spread.
The ICRG policy risk indicator seems more related to such developments than the CCR. It is
also possible that the markets started anticipating future privatization in the non-privatizing
countries.
An alternative way of assessing whether there is a link between privatization and policy
risk is to regress changes in a policy risk indicator on an indicator of the progress of
privatization (see Perotti and van Oijen, 2000). We use the amount of privatization sales
scaled by GNP as such an indicator. The results of a simple OLS regression of changes in
policy risk as dependent variable and contemporaneous privatization sales as explanatory
variable (plus a number of control variables) can be found in Table 4. The results indicate that
countries that make substantial progress in privatization (as measured by privatization sales)
show a reduction of political uncertainty, especially when policy risk is measured by the CCR.
To avoid an endogeneity problem related to the “privatization sales” variable, we also use
lagged privatization sales as explanatory variable. The results are similar: policy risk, when
20
We also performed a nonparametric Wilcoxon test, which provided similar results.
21
measured by the CCR, decreases after the implementation of privatization. We also use
instrumental variables to control for a potential endogeneity problem. Again, we find that only
there is only a strong link between the CCR rating and privatization.
Table 4: Link between privatization sales and policy risk.
The sample consists of the 22 countries we classified as privatizing (see Table 1 of Appendix 1) and 9
additional countries. All yearly data for the 31 countries are pooled into one sample after which we regress our
two different measures of policy risk improvement on privatization sales to GNP. Policy risk is measured by
either the CCR rating (panel A) or the ICRG policy risk index (panel B). In model (1) we use OLS and current
values of privatization sales to GNP. In model (2) we use OLS and lagged values of privatization sales to GNP.
In model (3) we use instrumental variables (IV) and lagged values of privatization sales to GNP as an
instrument for current values of privatization sales/GNP. The t-values are in parentheses. Standard errors are
controlled for heteroskedasticity.
Dependent Variable: Improvement in Country Credit Rating
Panel A
(relative change) (not in %)
Constant
Growth in GNP Per Capita
Growth in Exports Per Capita
Real Depreciation
Privatization Sales/GNP
Lagged Privatization Sales/GNP
Adjusted R-sq.
Prob. F-value
J-statistic
N
OLS
(1)
-.003
(-.52)
***.180
(4.06)
.047
(1.36)
.020
(.63)
OLS
(2)
-.000
(-.02)
***.198
(4.50)
.035
(.90)
.021
(.64)
IV
(3)
-.006
(-.68)
***.180
(4.02)
.019
(.48)
.020
(.63)
***.019
(3.47)
-
-
***.034
(2.28)
-
.18
.00
309
***.020
(4.77)
.18
.00
278
.15
.00
288
22
Dependent Variable: Improvement in ICRG Policy risk index
(relative change) (not in %)
Panel B
OLS
(1)
**.017
(1.99)
.036
(.909)
***.104
(2.37)
.015
(.54)
OLS
(2)
***.025
(2.57)
.050
(1.25)
*.077
(1.70)
.020
(.68)
IV
(3)
***.025
(2.35)
.051
(1.25)
*.077
(1.67)
.020
(.73)
-
Lagged Privatization Sales/GNP
.003
(.84)
-
-.002
(-.16)
-
Adjusted R-sq.
Prob. F-value
J-statistic
N
.005
.25
292
Constant
Growth in GNP Per Capita
Growth in Exports Per Capita
Real Depreciation
Privatization Sales/GNP
-.001
(-.16)
.013
.85
267
.012
.00
288
We conclude that there is evidence of an evolution in the perception of policy risk in
countries engaging in sustained privatization programs relative to other developing countries,
especially when policy risk is measured by the CCR, which also suggests a delayed effect.
These results support the view that privatization leads to a resolution of political uncertainty.
At the same time, it seems that only actual implementation of privatization (as opposed to its
announcement) changes the perception of investors towards policy risk. In the next section we
document how this reduction in policy risk favor the development of equity investment in
emerging countries.
Section III
Policy Risk and Stock Market Development
This section addresses the empirical relation between stock market development and policy
risk in emerging economies. We study the following indicators of stock market development:
yearly growth in market capitalization over GNP, yearly growth in traded value over GNP,
and the yearly average of monthly returns, where each monthly return is adjusted for the return
23
of the Morgan Stanley Capital International-world index.21 We obtain the data from the IFC’s
emerging markets database for our initial sample of 31 countries.
Before we relate stock market development to changes in policy risk, we first report
how our measures of stock market development fare over the different privatization periods
within our sample of 22 privatizing countries. Table 5 reports the summary statistics for these
measures over the different privatization phases.22 There is certainly enough variation in the
sample to be accounted for.
Table 5: Descriptive statistics for stock market development indicators over different
privatization periods
Capitalization/
GNP
Traded Value/
GNP
MSCI Index
Adj. Returns
Pre
Announcement
Early
Late
Pre
Announcement
Early
Late
Pre
Announcement
Early
Late
Annual %
Change
Standard
deviation
Minimum
Maximum
42.50
51.50
45.30
24.61
87.61
109.09
106.63
56.12
-0.01
0.74
1.75
-0.08
101.12
131.22
88.50
58.85
222.30
325.80
265.21
128.69
5.36
4.31
4.80
3.47
-74.74
-65.64
-66.01
-65.50
-72.28
-68.87
-76.90
-71.45
-12.43
-5.72
-9.65
-5.96
458.74
678.61
402.83
233.35
1,072.38
1,928.48
2,024.60
552.29
10.02
9.43
17.74
8.40
The development of stock markets in the countries has been radical in all privatization
periods. The average yearly growth in traded value over GNP always exceeds 50% in any
privatization period, although it slows down in the late phase of privatization. The pattern over
the different periods confirms our earlier claim that the direct effect of privatization share
issues can only account for a small fraction of the growth of these markets.
It is striking that our growth indicators for traded value and capitalization both peak in
the announcement period as opposed to the late period, which includes the year of highest
privatization sales. There may be several reasons for the incidence of the peak. First, the
21
We also used residuals from an estimated ICAPM model as a measure of stock market development.
The results are similar to the results reported for the MSCI-world index adjusted returns reported here.
22
For the traded value over GNP ratio, we removed the 1989 observations for Indonesia. In that year,
the growth rate of the traded value over GNP equalled an 11700%, which is more than five times as large as
the second largest growth rate in the sample.
24
countries selected by the IFC as emerging markets are those countries whose stock markets
actually did emerge, so there may be a sample selection. These markets often started growing
from a very low initial level of market development; small absolute increases in capitalization
or traded value then imply very high growth rates. Several countries which started privatizing
later probably benefited from the positive experience of earlier privatization in other emerging
markets.
Second, the announcement of privatization may induce higher market capitalization,
traded value and new listings from the anticipation of risk sharing and liquidity benefits that
are expected to result from future privatizations. It may also coincide with the period of
financial liberalization.
Third, it is often the case that some governments list the shares of the state-owned
enterprises on the stock exchange before actually selling them, contributing to explain the peak
capitalization growth.
We now turn to the final part of our analysis. Are changes in policy risk important for
stock market development in emerging economies? In order to assess this, we use our full
sample of 31 emerging stock markets and link stock market development in these countries to
changes in policy risk, adding data for the years 1988-1995 for our non-privatizing countries.
We pool all yearly observations into one data set of about 300 observations.23 We then regress
our different measures of stock market development on the improvements on policy risk, using
separate regressions for each policy risk indicator.
We use three natural macro-economic control variables in our regressions: real
depreciation vis-à-vis the US dollar, growth of exports per capita and growth of GNP per
capita. These factors are assumed to capture general economic developments and to be less
directly related (at least contemporaneously) with policy risk. The data are obtained from the
International Financial Statistics of the IMF and the World Bank Global Development Finance
database.
We also control for stock market liberalization. Most of the stock markets in our
sample were liberalized during our sample years. Henry (2000) and Bekaert and Harvey
(1999) show that in the period around these liberalizations, markets experienced positive
abnormal returns, and dividend yields dropped. This suggest that market capitalization, traded
value and stock returns jump up during the implementation of market liberalization. Over the
25
medium term, later stock market growth may also be affected by an earlier liberalization, if
investors confidence builds up and more firms acquire listings to profit from the resulting
lower cost of capital. We therefore include two dummies that capture whether or not the stock
market is or has been liberalized. The first liberalization dummy variable has a value of one if
liberalization has taken place in the same year or in any of the previous years. Hence, this
dummy should capture the medium term growth of emerging stock markets that results from
liberalization. The second liberalization dummy equals one around the liberalization date and
tests for a pure announcement effect.24 To construct these dummies, we use the stock market
liberalization dates provided by Bekaert and Harvey (1999). For the eleven countries not
reported in Bekaert and Harvey (1999), we use the IFC liberalization dates, given by the
month after which the IFC considers the country’s composite index as ‘investable’. According
to the IFC, most of these countries did not experience any liberalization.
Finally, we include the yearly privatization sales, scaled by GNP, in the regressions.
This term should capture any direct effect of privatization share issues independent from its
effect on policy risk, as well as any contemporaneous liquidity benefits from privatization
listings. The summary statistics of the regression variables can be found in Table 6.
Table 6: Descriptive statistics for regression variables
Variables
Mean
Median
Maximum
Minimum
Standard
deviation
Number of
Observations
Growth in Capitalization/GNP (%)
34.7
14.9
678.6
-74.7
84.7
303
Growth in Traded Value/GNP (%)
84.3
25.5
2,279.8
-87.5
246.4
303
Stock market return in excess of
MSCI World Index (%)
Growth in GNP per capita (%)
0.63
0.24
17.7
-12.4
4.2
189
5.9
6.9
89.9
-51.0
15.3
309
8.0
7.8
67.0
-61.1
13.1
310
Real depreciation (%)
-9.6
-6.0
60.7
-97.4
20.2
310
Privatization Sales/GNP (%)
0.46
0.02
11.0
0.0
1.1
309
1.8
1.9
35.4
-41.2
8.9
310
Growth in Exports per capita (%)
Percentage change in Country
Credit Rating
23
In the regression on excess returns, the size of our sample is reduced to around 190 because the
EMDB does not provide return data for all years and countries.
24
For those liberalizations that occur in the first three months (last three months) of the calendar year,
the dummy equals one both the year of liberalization and the year before (after that). For liberalizations that
fall within the other months, the dummy equals one only in the year of the liberalization.
26
Percentage change in ICRG Policy
Risk Rating
2.8
0.00
61.9
-34.5
12.3
293
We perform regressions both with and without country dummies. In all cases the
inclusion of country dummies worsens the fit of the regression, measured by the adjusted Rsquared. This suggests that there are no significant country effects. Table 7 reports the results
of all the regressions, where we exclude country dummies.
The equations indicate that policy indicators (liberalization and policy risk) perform
well at explaining the remarkable sample variation, particularly our measures of perceived
policy risk. The CCR is significant in all regressions: at the 1% level for growth in
capitalization and excess return, and at the 5% level for traded value over GNP. The ICRG
policy risk indicator is significantly related to growth in capitalization and traded value, but not
to excess return.25
The difference in explanatory power among the two policy risk indicators is intriguing.
CCR turns out to be particularly valuable in explaining market development. It is possible that
the ICRG policy index relies to some extent on conventional, backward-looking economic
measures which are less informative on the underlying risk and opportunity factors than
perceived risk and confidence measured directly by CCR.
Note that the coefficient for the privatization sales over GNP term is insignificant in all
regressions.26 This is consistent with the notion that policy risk perception is a summary
statistics of the effect of privatization on confidence and thus on the required rate of return.
The direct effect of privatization sales appears thus not significant after controlling for changes
in policy risk.27
In accordance with Henry (2000) and Bekaert and Harvey (1999), we find that stock
returns jump around liberalization. We find that stock market liberalization dummies are also
related to stock market development. There is evidence of a large, positive effect on
capitalization around the liberalization date. These findings suggest that stock market
liberalization increases the market’s capitalization through new listings. The regressions also
show that excess stock returns are strongly related to changes in the CCR indicator, in line
with the results of Diamonte, Liew and Stevens (1996) and Erb, Harvey and Viskanta
25
Exclusion of the liberalization dummies does not affect the significance of policy risk.
Exclusion of the policy risk indicators does not alter this result. We thus do not find any evidence of a
direct link between privatization and stock market development.
27
This does not mean that current privatization sales have no impact on policy risk indicators; in section
II we saw that when we regressed our policy risk measures on the simultaneous flow of privatization sales,
there is a positive and significant effect.
26
27
(1996b), but not to changes in the ICRG policy risk indicator. The medium term effect of
liberalization on stock returns is negative, but insignificant in all but one specification. In all,
the results seem to suggest that risk premiums decline around and after liberalization, leading
to somewhat lower later returns, which is in accordance with Henry (2000) and Bekaert and
Harvey (1999).
Table 7: Stock market development, liberalization and policy risk.
The sample consists of the 22 countries we classified as privatizing (see Table 1 of Appendix 1) and 9
additional countries. For the latter group, we use stock market development data from 1988 to 1995. For the
countries included in our sample of privatizing, we use stock market development data for the years as reported
in Table 1. All yearly data for the 31 countries are pooled into one sample after which we regress our five
different measures of stock market development on policy risk improvement and stock market liberalization.
Liberalization’ is a dummy that equals one in the year of stock market liberalization and in those years that
follow. ‘Liberalization Period’ is a dummy that equals one in the year/years in which the liberalization actually
took place. As macro-economic control variables we use growth in GNP per capita, growth in exports per
capita, real depreciation and privatization sales over GNP (latter in %). In addition to OLS estimates, we report
two-step GMM estimates. We use lagged values of policy risk improvement as instruments. The t-values are in
parentheses. They are calculated using White heteroskedasticity-consistent standard errors.
Panel A
Dependent Variable: Growth in Market Capitalization over GNP (not in %)
Constant
Growth in GNP Per Capita
Growth in Exports Per Capita
Real Depreciation
Privatization Sales/GNP
Liberalization
Liberalization Period
OLS
(1)
***.18
(3.71)
-.59
(-1.37)
.47
(1.42)
-.49
(-1.57)
-.02
(-.59)
OLS
(2)
***.17
(3.32)
-.26
(-.57)
.41
(1.23)
-.45
(-1.41)
.01
(.17)
GMM
(3)
***.16
(7.23)
-.35
(-1.24)
**.47
(2.28)
***-.56
(-3.39)
.01
(.32)
GMM
(4)
***.15
(4.07)
**-.57
(-2.32)
.21
(1.25)
***-.67
(-4.77)
.06
(1.26)
.11
(1.14)
*.43
(1.91)
.10
(1.04)
*.44
(1.96)
**.09
(2.18)
***.48
(3.49)
*.08
(1.67)
*.28
(3.03)
Improvement in:
Country Credit Rating (relative change)
***1.65
(2.95)
ICRG Policy Risk (relative change)
Adjusted R-sq.
Prob. F-value
Sargan test (p-value)
Test for first-order serial correlation (p-value)
Test for second-order serial correlation
Wald test of joint significance
***.98
(2.26)
*.80
(1.79)
.08
.00
**.75
(2.24)
.06
.00
.43
.56
.45
.00
.30
.53
.26
.00
28
N
Panel B
303
288
303
288
Dependent Variable: Growth in Traded Value over GNP (not in %)
Constant
Growth in GNP Per Capita
Growth in Exports Per Capita
Real Depreciation
Privatization Sales/GNP
Liberalization
Liberalization Period
OLS
(1)
***.50
(3.60)
.01
(.00)
**2.81
(1.98)
-.61
(-1.18)
-.09
(-.80)
OLS
(2)
***.47
(3.06)
.62
(.50)
*2.76
(1.90)
-.52
(-.97)
-.03
(-.30)
GMM
(3)
***.47
(6.28)
-.50
(-.50)
**1.41
(2.11)
***-1.16
(-3.27)
-.08
(-.54)
GMM
(4)
***.42
(6.48)
.11
(.16)
***1.86
(3.00)
-.71
(-1.41)
.18
(1.26)
-.05
(-.16)
.43
(.77)
-.05
(-.16)
.46
(.82)
.13
(.97)
.21
(.84)
-.25
(-1.57)
-.06
(-.25)
Improvement in:
Country Credit Rating (relative change)
**3.53
(2.39)
ICRG Policy Risk (relative change)
Adjusted R-sq.
Prob. F-value
Sargan test (p-value)
Test for first-order serial correlation (p-value)
Test for second-order serial correlation
Wald test of joint significance
N
**4.52
(2.27)
**1.74
(1.99)
.03
.02
303
**2.39
(3.15)
.02
.06
288
.58
.94
.13
.00
303
.50
.95
.11
.00
288
29
Dependent Variable: MSCI-World Index Adjusted Returns (average monthly return, not in
%)
Panel C
Constant
Growth in GNP Per Capita
Growth in Exports Per Capita
Real Depreciation
Privatization Sales/GNP
Liberalization
Liberalization Period
OLS
(1)
-.002
(-.48)
-.006
(-.21)
.003
(.14)
***-.071
(-5.73)
-.138
(-.44)
OLS
(2)
-.002
(-.45)
.022
(.81)
.004
(.17)
***-.060
(-4.27)
.002
(.85)
GMM
(3)
.004
(1.53)
.004
(.20)
-.02
(-1.49)
***-.06
(-7.79)
.002
(1.40)
GMM
(4)
***.42
(6.48)
.11
(.16)
***1.86
(3.00)
-.71
(-1.41)
.18
(1.26)
-.007
(-1.31)
**.019
(2.32)
-.008
(-1.39)
***.022
(2.71)
**-.007
(-2.31)
***.020
(4.57)
-.25
(-1.57)
-.06
(-.25)
Improvement in:
Country Credit Rating (relative change)
***.149
(3.33)
ICRG Policy Risk (relative change)
Adjusted R-sq.
Prob. F-value
Sargan test (p-value)
Test for first-order serial correlation (p-value)
Test for second-order serial correlation
Wald test of joint significance
N
***.119
(3.61)
.038
(1.50)
.25
.00
188
.010
(.39)
.17
.00
180
.86
.08
.34
.00
186
1.00
.12
.26
.00
175
We also analyzed whether the interaction between liberalization and changes in policy
risk development affects stock market development. Such an interaction would arise if
liberalization makes markets more sensitive to changes in policy risk. If the stock market is not
liberalized, changes in policy risk may have less consequences if local investors are not
concerned about it. However, an interaction term in the regressions reported in Table 7, is
insignificant at the 10% level. Including country dummies in the regressions generally worsens
30
the overall fit but increases the coefficient of the CCR and ICRG policy risk indicators for the
capitalization regression, with little effect on the significance.
We checked for the presence of outlier effects by excluding countries with extreme
market development patterns (Portugal and Indonesia) from our analysis, with similar results.
We also excluded all observations where the growth in stock market development was more
than four standard deviations away from the mean. This reduces the size of the coefficients
somewhat, but does not change the pattern of significance across the different regressions.
Finally, we tried including inflation in the analysis, but the results are almost identical.
There are several strong reasons why the results indicate a direct causality running
from policy risk and liberalization to stock market development. First of all, we establish the
importance of policy risk for stock market development by contrasting samples of privatizers
and non-privatizers, in a sample in which around 40% of the observations are from years in
which no substantial privatization took place. We also find the gradual pattern in stock market
development (that we attribute to the gradual resolution of policy risk) hard to explain in
terms of indirect liberalization benefits of new listings. The stock market is a forward-looking
indicator. If market conditions were expected to improve as a direct result of announced
liberalization sales, prices and trading volume should immediately anticipate these benefits.28
The OLS regressions may, however, suffer from a reverse causality problem in the
sense that both stock market development and stock market liberalization may cause
improvements in policy risk. As a test for such a potential causality problem we assess the
robustness of our OLS results to using the method of instrumental variables with respect to
the policy risk variable. Since it is difficult to find valid instruments for the policy risk variable,
we use lagged variables of improvements in policy risk index as instruments. The
31
autocorrelations between the two policy risk indicators and their lags suggest that lagged CCR
may be a good instrument29, while lagged ICRG Policy may be a poor instrument due to the
lack of autocorrelation30. We will use the Sargan test of overidentifying restrictions to test for
the validity of these instruments in a more precise way. We also test for the presence of
potential country-specific effects by using a test for higher order autocorrelation. To
implement the instrumental variables method we use the GMM estimation techniques for panel
data developed by Arellano and Bond (1991) and Arellano and Bover (1995). In addition to
the OLS estimates, Table 6 also presents the GMM results for the three model specifications.
We show the two-step GMM estimates that control for heteroskedasticity in the error term.
We find that the GMM results are quite similar to the OLS results, although we find
that the effect of an improvement in policy risk on growth in market capitalization over GNP
is generally lower for the GMM estimates, while the effects of an improvement in policy risk
on growth in traded value to GNP is generally higher for the GMM estimates. Another
difference from the OLS results is that growth in capitalization tends to be higher once the
market has been liberalized. Also, the statistical significance of the GMM estimates improves
over the OLS results, although it should be noted that the two-step GMM estimates may be
produce poor estimates of the standard deviations of the coefficients in certain samples (see
Blundell and Bond, 1998). The main difference, however, can be found in the specification
with the change in ICRG policy risk. It turns out that the lag of ICRG Policy is a weak
instrument for current ICRG Policy, as has been suggested by the low autocorrelation before.
28
Trading and diversification gains may also be incorporated gradually, of course, if there are fears that
the privatization process may be halted or reversed; such concerns do belong to our definition of political and
policy risk.
29
The correlation between growth in CCR and growth in lagged CCR is 45.2%, and the correlation
between the change in CCR and the change in lagged CCR is 50.1%.
30
The correlation between growth in ICRG Policy and growth in lagged ICRG Policy is only 15.4%, and
the correlation between change in ICRG Policy and change in lagged ICRG Policy is only 9.6%.
32
The general conclusion is that the OLS results do not seem to suffer from a reverse causality
problem where stock market development causes improvement in policy risk.
We conclude therefore that policy risk improvements, correlated with the existence of
a sustained privatization and liberalization program, appear to be an important factor in the
rapid development of emerging stock markets. Of course, policy risk did not alone determine
the development of these stock markets, but its impact is economically quite significant.
Conclusion
We have presented evidence that the resolution of policy risk through sustained
privatization has been an important source for the recent growth in emerging stock markets. It
seems that sustained privatization has gradually strengthened the institutional framework by
forcing a resolution of policy and legal uncertainties which had till then hindered equity market
development, leading to increase in investor confidence.
On average, this process seems to take place gradually as privatization proceeds, with
much of the resolution taking place during privatization, as opposed to the announcement and
preparation period. We also confirm earlier results that liberalization has a positive impact,
although the significance of policy risk appears significantly stronger.
We view our approach as an attempt to investigate the dynamics of required returns on
investments. There is by now a general consensus in finance that required returns evolve over
time. If this is true for firms, it must be true for country risks, particularly in emerging markets.
A final but important point is that it is possible that privatization can by itself resolve
policy risk by helping to overcome political resistance to market reforms and their effect,
perhaps because it establishes a broader-based ownership. Biais and Perotti (2001) explain
33
how a large privatization program may be designed so as to reduce policy risk of future policy
reversals. A market-oriented party may increase the probability of being re-elected by
implementing a series of underpriced sales, where excess demand is rationed so as to ensure a
broad diffusion of shareholding and to reward long term holdings. A wide diffusion of shares
may then shift the voting preferences of the middle class. This shift in the political equilibrium
creates stable political support for market reforms and reduces policy risk for equity
investment, reducing the risk premium, producing excess returns and increasing market
capitalization.31
In our view there is much promise for research in the area of political economy and
finance. Privatization, just as nationalization, has strong redistributive effects and tends to
cause political conflict, whose outcome is both relevant and informative for investors.
31
Jones et al (1999) find significant empirical support for these conclusions by analysing the pricing and
share allocations affiliated with privatization sales.
34
Appendix 1:
Special cases in defining the privatization period and a list of the privatizating countries
For 5 countries, we deviate from the quantitative definitions of privatization periods given in
the text.
Argentina: We put 1989 in the announcement period. In 1989 the newly-elected President
Menem immediately announced a privatization plan which already led to sales in 1990 (Sader,
1993)
Brazil: In 1988, there was one large privatization transaction; however, in 1989 and 1990
there were no sales. In 1990 a privatization plan was announced, which took of in 1991 (Sader
(1993)). Hence we regard 1990 as part of the announcement period.
Chile: This country has a long tradition of privatization, extending back to the early 70s. This
period consists of two waves of privatization, according to Hachette and Luders (1993). We
take the second wave of privatization as our focus of analysis. For privatization sales before
1988 we rely on Hachette and Luders and use 1985 as the start of privatization.
Jamaica: For Jamaica we were unable to obtain information about the precise sales before
1988. We rely here on Leeds (1991) (“Privatization Through Public Offerings: Lessons from
Two Jamaican Cases” in R. Ramamurti and R. Vernon (eds) Privatization and Control of
State-Owned Enterprises, World Bank, Washington DC ) who claims that privatization started
off in 1986.
Malaysia: We rely on Sader (1993) and Galal, Jones and Vogelsang (1994) who claim that
privatization started in 1985.
Mexico: For Mexico we use Rodriguez (1992) for obtaining privatization sales data before
1988. We neglect the revenues of privatization in 1983 and 1984. Privatization in that period
mostly involved liquidation of assets. Revenues were around 40 million and 1 million
respectively for those years. In 1985 sales were 113, and remained above 100 million
afterwards. (See Rodriguez 1992).
The countries in our sample of privatizers, and the resulting classification of privatization
periods are reported in Table 1.
35
Table 1: Sample of countries and their privatization periods
ARGENTINA
BANGLADESH
BRAZIL
CHILE
COLOMBIA
COTE D’IVOIR
GREECE
INDIA
INDONESIA
JAMAICA
MALAYSIA
MEXICO
NIGERIA
PAKISTAN
PERU
PHILIPPINES
PORTUGAL
SRI LANKA
TUNESIA
THAILAND
TURKEY
VENEZUELA
Pre
87
85
88
81
87
87
86
87
87
82
81
81
85
86
87
85
85
85
84
88
84
86
Announcement
89
87
90
83
89
89
88
89
89
84
83
83
87
88
89
87
87
87
86
90
86
88
Early
90
89
91
85
91
91
90
91
91
86
85
85
89
90
91
89
89
89
88
92
88
90
Late
92
93
93
88
93
95
90
94
95
89
92
91
93
94
94
93
92
92
92
93
90
91
36
Appendix 2: Overview of the Policy risk Indicators
Table 1: Rankings for the importance of factors in Country Credit Risk Ratings.
Factor
1979
1994
Debt Service
1
1
Political Outlook
3
2
Economic Outlook
2
3
Financial Reserves/Current Account
4
4
Trade Balance
5
5
Foreign Direct Investment
6
6
Fiscal Policy
9
7
Inflow of Portfolio Investment
8
8
Access to Capital Markets
7
9
Source: Erb, Harvey and Viskanta (1996b).
Table 2: Composition of the International Country Risk Guide Indicators
Policy risk indicator
Economic expectations vs. reality
Economic planning failures
Political leadership
External conflict
Corruption in government
Military in politics
Organized religion in politics
Law and order tradition
Racial and national tensions
Political terrorism
Civil war risks
Political party development
Quality of bureaucracy
Weight
.12*
.12*
.12*
.10
.06
.06
.06
.06
.06
.06
.06
.06
.06
Financial Risk indicator
Loan default or unfavorable loan restructuring
Delayed payment of supplier’s credits
Repudiation of contracts by government
Losses from exchange controls
Expropriation of private investments
.20
.20
.20*
.20*
.20*
Economic Risk indicator
Inflation
Debt service as a % of exports
International liquidity ratios
Foreign trade collection experience
Current account balance as % of goods and services
Parallel foreign exchange rate market indicators
.20
.20
.20
.20
.20
.20
* Components used for the ICRG policy risk indicator
37
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40
Figure 1: Credibility and uncertainty over time
Horizontal axis is time (years); The simulation uses the following parameter values: the value
captured in case of interference is á=0.90, the discount factor is ä=0.70, the number of firms to
be sold N=20, and the final date is T=30.
Credibility and uncertainty over time
in case of no policy reversal
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1
2
3
4
5
6
7
uncertainty
8
9
10
11 12 13
14
credibility
41
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and Klara Z. Sabirianova
Peter Lanjouw
Aug. 2000
July 2000
July 2000
July 2000
Aug. 2000
Aug. 2000
Marjorie A. Lyles, Le Dang
Doanh, and Jeffrey Q. Barden
June 2000
Zeynep Gürhan-Canli and
Durairaj Maheswaran
Morris Bornstein
Nauro F. Campos and Jeffrey B.
Nugent
Raja Kali
Susan Linz
Aug. 2000
Nandini Gupta, John C. Ham and
Jan Svejnar
Ian Domowitz, Jack Glen and
Ananth Madhavan
John S. Earle and Klara Z.
Sabirianova
Niraj Dawar and Amitava
Chattopadhyay
Daniel Daianu and Radu
Vranceanu
Martin Eichler and Michael
Lechner
R.E Ericson and B.W Ickes
Haizhou Huang and Chenggang
Xu
Jean Paul Azam, Bruno Biais, and
Magueye Dia
July 2000
July 2000
June 2000
July 2000
May 2000
Mar. 2000
Oct. 2000
June 2000
June 2000
June 2000
May 2000
Mar. 2000
Feb. 2000
The entire Working Paper Series is available at: www.wdi.bus.umich.edu
No. 314 Is Life More Risky in the Open? Household Risk-Coping and
the Opening of China’s Labor Markets
No. 313 Networks, Migration and Investment: Insiders and Outsiders in
Tirupur’s Production Cluster
No. 312 Computational Analysis of the Impact on India of the Uruguay
Round and the Forthcoming WTO Trade Negotiations
No. 311 Subsidized Jobs for Unemployed Workers in Slovakia
No. 310 Determinants of Managerial Pay in the Czech Republic
No. 309 The Great Human Capital Reallocation: An Empirical Analysis
of Occupational Mobility in Transitional Russia
No. 308 Economic Development, Legality, and the Transplant Effect
No. 307 Community Participation, Teacher Effort, and Educational
Outcome: The Case of El Salvador’s EDUCO Program
No. 306 Gender Wage Gap and Segregation in Late Transition
No. 305 The Gender Pay Gap in the Transition from Communism:
Some Empirical Evidence
No. 304 Post-Unification Wage Growth in East Germany
No. 303 How Does Privatization Affect Workers? The Case of the
Russian Mass Privatization Program
No. 302 Liability for Past Environmental Contamination and
Privatization
No. 301 Varieties, Jobs and EU Enlargement
No. 300 Employer Size Effects in Russia
No. 299 Information Complements, Substitutes, and Strategic Product
Design
No. 298 Markets, Human Capital, and Inequality: Evidence from Rural
China
No. 297 Corporate Governance in the Asian Financial Crisis
No. 296 Competition and Firm Performance: Lessons from Russia
No. 295 Wage Determination in Russia: An Econometric Investigation
No. 294 Can Banks Promote Enterprise Restructuring?: Evidence From
a Polish Bank’s Experience
No. 293 Why do Governments Sell Privatised Companies Abroad?
No. 292 Going Public in Poland: Case-by-Case Privatizations, Mass
Privatization and Private Sector Initial Public Offerings
No. 291a Institutional Technology and the Chains of Trust: Capital
Markets and Privatization in Russia and the Czech Republic
No. 291 Institutional Technology and the Chains of Trust: Capital
Markets and Privatization in Russia and the Czech Republic
No. 290 Banking Crises and Bank Rescues: The Effect of Reputation
No. 289 Do Active Labor Market Policies Help Unemployed Workers to
Find and Keep Regular Jobs?
No. 288 Consumption Patterns of the New Elite in Zimbabwe
No. 287 Barter in Transition Economies: Competing Explanations
Confront Ukranian Data
No. 286 The Quest for Pension Reform: Poland’s Security through
Diversity
John Giles
Apr. 2000
Abhijit Banerjee and Kaivan
Munshi
Rajesh Chadha, Drusilla K.
Brown, Alan V. Deardorff and
Robert M. Stern
Jan. C. van Ours
Tor Eriksson, Jaromir Gottvald
and Pavel Mrazek
Klara Z. Sabirianova
Mar. 2000
Mar. 2000
May 2000
May 2000
Oct. 2000
Daniel Berkowitz, Katharina
Pistor, and Jean-Francois Richard
Yasuyuki Sawada
Feb. 2000
Nov. 1999
Stepan Jurajda
Andrew Newell and Barry Reilly
May 2000
May 2000
Jennifer Hunt
Elizabeth Brainerd
Nov. 1998
May 2000
Dietrich Earnhart
Mar. 2000
Tito Boeri and Joaquim Oliveira
Martins
Todd Idson
Geoffrey G. Parker and Marshall
W. Van Alstyne
Dwayne Benjamin, Loren Brandt,
Paul Glewwe, and Li Guo
Simon Johnson, Peter Boone,
Alasdair Breach, and Eric
Friedman
J. David Brown and John S. Earle
Peter J. Luke and Mark E.
Schaffer
John P. Bonin and Bozena Leven
May 2000
Apr. 2000
Mar. 2000
May 2000
Nov. 1999
Mar. 2000
Mar. 2000
Mar. 2000
Bernardo Bortolotti, Marcella
Fantini and Carlo Scarpa
Wolfgang Aussenegg
Mar. 2000
Dec. 1999
Bruce Kogut and Andrew Spicer
Feb. 2001
Bruce Kogut and Andrew Spicer
Mar. 1999
Jenny Corbett and Janet Mitchell
Jan C. van Ours
Jan. 2000
Feb. 2000
Russell Belk
Dalia Marin, Daniel Kaufmann
and Bogdan Gorochowskij
Marek Góra and Michael
Rutkowski
Feb. 2000
Jan. 2000
Jan. 2000
The entire Working Paper Series is available at: www.wdi.bus.umich.edu
No. 285 Disorganization and Financial Collapse
No. 284 Coordinating Changes in M-form and U-form Organizations
No. 283 Why Russian Workers Do Not Move: Attachment of Workers
Through In-Kind Payments
No. 282 Lessons From Fiascos in Russian Corporate Governance
No. 281 Income Distribution and Price Controls: Targeting a Social
Safety Net During Economic Transition
No. 280: Starting Positions, Reform Speed, and Economic Outcomes in
Transitioning Economies
No. 279 : The Value of Prominent Directors
No. 278: The System Paradigm
No. 277: The Developmental Consequences of Foreign Direct
Investment in the Transition from Socialism to Capitalism: The
Performance of Foreign Owned Firms in Hungary
No. 276: Stability and Disorder: An Evolutionary Analysis of Russia’s
Virtual Economy
No. 275: Limiting Government Predation Through Anonymous
Banking: A Theory with Evidence from China.
No. 274: Transition with Labour Supply
No. 273: Sectoral Restructuring and Labor Mobility: A Comparative
Look at the Czech Republic
No. 272: Published in: Journal of Comparative Economics “Returns to
Human Capital Under the Communist Wage Grid and During the
Transition to a Market Economy” Vol. 27, pp. 33-60 1999.
No. 271: Barter in Russia: Liquidity Shortage Versus Lack of
Restructuring
No. 270: Tests for Efficient Financial Intermediation with Application to
China
No. 269a: Russian Privatization and Corporate Governance: What Went
Wrong?
No. 269: Russian Privatization and Corporate Governance: What Went
Wrong?
No. 268: Are Russians Really Ready for Capitalism?
No. 267: Do Stock Markets Promote Economic Growth?
No. 266: Objectivity, Proximity and Adaptability in Corporate
Governance
No. 265: When the Future is not What it Used to Be: Lessons from the
Western European Experience to Forecasting Education and Training in
Transitional Economies
No. 264: The Institutional Foundation of Foreign-Invested Enterprises
(FIEs) in China
No. 263: The Changing Corporate Governance Paradigm: Implications
for Transition and Developing Countries
No. 262: Law Enforcement and Transition
No. 261: Soft Budget Constraints, Pecuniary Externality, and the Dual
Track System
No. 260: Missing Market in Labor Quality: The Role of Quality Markets
in Transition
No. 259: Do Corporate Global Environmental Standards in Emerging
Markets Create or Destroy Market Value
Dalia Marin and Monika
Schnitzer
Yingyi Qian, Gérard Roland and
Chenggang Xu
Guido Friebel and Sergei Guriev
Oct. 1999
Merritt B. Fox and Michael A.
Heller
Michael Alexeev and James
Leitzel
William Hallagan and Zhang Jun
Oct. 1999
Yoshiro Miwa & J. Mark
Ramseyer
János Kornai
Lawrence Peter King
Oct. 1999
May 1999
Oct. 1999
Mar. 1999
Jan. 2000
Apr. 1998
Sept. 1999
Clifford Gaddy and Barry W.
Ickes
Chong-En Bai, David D. Li,
Yingyi Qian and Yijiang Wang
Tito Boeri
Vit Sorm and Katherine Terrell
Nov. 1999
Daniel Munich, Jan Svejnar and
Katherine Terrell
Oct. 1999
Sophie Brana and Mathilde
Maurel
Albert Park and Kaja Sehrt
June 1999
Bernard Black, Reinier Kraakman
and Anna Tarassova
Bernard Black, Reinier Kraakman
and Anna Tarassova
Susan Linz
Randall K. Filer, Jan Hanousek
and Nauro Campos
Arnoud W.A Boot and Jonathan
R. Macey
Nauro F. Campos, Gerard
Hughes, Stepan Jurajda, and
Daniel Munich
Yasheng Huang
July 1999
Dec. 1999
Nov. 1999
Mar. 1999
May 2000
Sept. 1999
Sept. 1999
Sept. 1999
Sept. 1999
Sept. 1999
Sept. 1999
Erik Berglof and Ernst-Ludwig
von Thadden
Gerard Roland and Thierry
Verdier
Jiahua Che
June 1999
June 2000
Gary H. Jefferson
July 1999
Glen Dowell, Stuart Hart and
Bernard Yeung
June 1999
May 1999