WHAT DRIVES TIME VARIATION IN EMERGING MARKET SEGMENTATION?

I use American Depositary Receipts and underlying stocks to test the level of integration of the stock markets of Argentina, Chile, and Mexico into the world capital market in the post‐liberalization period. I find that these markets experience time‐varying integration and are, on average, still not highly internationally integrated. Furthermore, there is no distinct trend toward higher levels of integration. In fact, the markets of Argentina and Mexico have become increasingly segmented over the post‐liberalization period. I find that financial and economic openness, stock market liquidity and volatility, and the state of the currency market significantly affect the level of segmentation.     

Interdependence and Volatility Spillovers Under Market Liberalization: The Case of Istanbul Stock Exchange

This paper analyzes stock returns and volatility relations between the Istanbul Stock Exchange (ISE) and the global market as represented by stock markets in the US, the UK, Japan and Germany. Results from monthly data and multivariate cointegration tests suggest that the ISE became significantly integrated in the global market only in the period following market liberalization in late 1989. We also find evidence based on GARCH estimations that capital liberalization actually mitigated, rather than intensified, volatility in the ISE. Our results further suggest that the Asian crisis in mid‐1997 and the consequent Russian economic meltdown in mid‐1998 are partly responsible for the recent excessive volatility in the Turkish market. The results also identify the US and the UK markets as dominate sources of volatility spillovers for the ISE, even in the period following the Asian‐Russian crises. Consequently, it appears that the two matured markets of the US and the UK shoulder significant responsibility for the stability and financial health of smaller emerging markets like the ISE.     

Stock market cycles, financial liberalization and volatility

In this paper we analyze the cycles of the stock markets in four Latin American and two Asian countries, and we compare their characteristics. We divide our sample in two subperiods in order to account for differences induced by the financial liberalization processes of the early 1990s. We find that cycles in emerging countries tend to have shorter duration and larger amplitude and volatility than in developed countries. However, after financial liberalization Latin American stock markets have behaved more similarly to stock markets in developed countries whereas Asian countries have become more dissimilar. Concordance of cycles across markets has increased significantly over time, especially for Latin American countries after liberalization.     

Does financial market liberalization increase the degree of market efficiency? The case of the Athens stock exchange

In this paper we assess if the financial market liberalization introduced in the beginning of the 1990s in Greece has changed the degree of market development (efficiency) by studying time-varying global Hurst exponents. Our results suggest that changes in financial market liberalization have important positive implications on the degree of development of stock markets. These results have important policy implications for the development of stock markets around the world.     

What drives portfolio investments of German banks in emerging capital markets?

After decades of steady liberalization and financial market development, emerging capital markets experienced unparalleled capital inflows in the aftermath of the emerging markets crisis of the 1990s. This paper studies portfolio investment decisions of German banks in emerging capital markets from 2002 to 2007. The use of a dynamic time-series cross-section framework and the micro database External Position Report provided by Deutsche Bundesbank permit insights into the various determinants of portfolio investments in ECMs. For example, there is evidence that German banks take into account the various dimensions of financial market development in their portfolio investment decisions and anticipate the special risks inherent in emerging markets. Proxies for the overall development and efficiency of capital markets have the highest economic significance of all variables. The introduction of depositary receipts programs has a positive impact on stock market investment. Moreover, there is evidence that global risk aversion exerts a significant influence in times of financial turmoil.     

Financial liberalization and changes in the dynamic behaviour of emerging market volatility: Evidence from four Latin American equity markets

This paper examines whether the dynamic behaviour of stock market volatility for four Latin American stock markets (Argentina, Brazil, Chile and Mexico) and a mature stock market, that of the US, has changed during the last two decades. This period corresponds to years of significant financial and economic development in these emerging economies during which several financial crises have taken place. We use weekly data for the period January 1988 to July 2006 and we conduct our analysis in two parts. First, using the estimation of a Dynamic Conditional Correlation model we find that the short-term interdependencies between the Latin America stock markets and the developed stock market strengthened during the Asian, Latin American and Russian financial crises of 1997–1998. However, after the initial period of disturbance they eventually returned to almost their initial (relatively low) levels. Second, the estimation of a SWARCH-L model reveals the existence of more than one volatility regime and we detect a significant increased volatility during the period of crisis for all the markets under examination, although the capital flows liberalization process has only caused moderate shifts in volatility.     

Foreign Speculators and Emerging Equity Markets

We propose a cross-sectional time-series model to assess the impact of market liberalizations in emerging equity markets on the cost of capital, volatility, beta, and correlation with world market returns. Liberalizations are defined by regulatory changes, the introduction of depositary receipts and country funds, and structural breaks in equity capital flows to the emerging markets. We control for other economic events that might confound the impact of foreign speculators on local equity markets. Across a range of specifications, the cost of capital always decreases after a capital market liberalization with the effect varying between 5 and 75 basis points.     

THE ROLE OF ACCOUNTING INFORMATION IN STOCK MARKET LIBERALIZATION: EVIDENCE FROM KOREA

Stock market liberalization is a decision by a country’s government to allow foreigners to buy securities in that country’s capital market. This study examines how the liberalization of the Korean stock market affected stock price behavior and changed the role of accounting information for investment decisions. The Korean stock market opened its door to foreign investment in 1991. Prior to this, market inefficiencies, such as the superfluous co-movement of stock prices with industry or market indices or investment based on rumor and speculation, were widespread. Since the opening of the stock market to foreigners, a more rational pricing behavior has emerged. This setting provides a unique opportunity to investigate how stock price behavior has changed with market liberalization and what was the role of accounting information in this process. Our results indicate that the co-movement behavior of stock prices by industry decreased and stock price differentiation based on individual firm characteristics increased after market liberalization. The results also show that the explanatory power of accounting numbers increased after market liberalization. Overall, the results imply that foreign investors contributed to the improvement of market efficiency with the opening up of capital markets in Korea. We believe that our results provide useful evidence to other capital markets that are in a similar situation.     

The Emergence of Equity Investment in Developing Countries: Overview

Equity flows to developing countries have increased sharplyin recent years. Foreign equity investment can be beneficialto developing countries because of its risk-sharing characteristicsand effects on resource mobilization and allocation. Empiricalevidence shows that the stock markets of developing countrieshave become more, although not fully, integrated with worldfinancial markets, and this increased integration implies alower risk-adjusted cost of capital. Constraints to furtherincreasing the flows and expanding the benefits are macroinstability,poorly functioning stock markets, and insufficiently open financialmarkets. Empirical evidence does not support the view that equityflows are more volatile than other types of capital flows orthat equity flows have a negative impact on the volatility ofstock prices.     

Are Open Markets Good for Foreign Investors and Emerging Nations?

Although policymakers of emerging nations routinely brand foreign capital as "hot money" and hold it responsible for the ills of their economies, this article suggests that the experience of opening up their markets to overseas investors has been largely beneficial for the host countries. Based on their own recent study, the authors report that when emerging economies open their markets, the level of stock prices tends to rise without an associated increase in volatility, and more capital becomes available for domestic investment at a lower cost. The stock markets also appear to become more efficient, thus resulting in a better allocation of resources. Furthermore, the inflow of foreign capital does not lead to higher inflation or stronger currencies, nor does the volatility of inflation or exchange rates increase. If some countries experience large capital outflows with damaging consequences, the culprit is not foreign investors, but rather policymakers' futile attempt to defy market forces and the failure of their economies to put the capital to productive uses.
The authors' analysis also suggests that, when the recent turmoil in emerging markets is set in the context of a longer-run historical perspective, nothing appears to have changed that would materially alter the prospects for investing in emerging markets. The recent market volatility and currency crises in emerging nations are by no means extraordinary—indeed, the currencies of many developing countries fall routinely. What distinguishes the Mexican and Thai currency crises from such run-of-the-mill devaluations is that both governments resisted the inevitable until market forces brought about a crash. The recent emerging market currency crises should accordingly be viewed as more or less predictable "road bumps" that can be expected when the policymakers of emerging economies gradually—and grudgingly—relinquish their power to the markets.     

GOLBALIZATION, CORPORATE FINANCE, AND THE COST OF CAPITAL

International financial markets are progressively becoming one huge, integrated, global capital market—a development that is contributing to higher stock prices in developed as well as developing economies. For companies that are large and visible enough to attract global investors, having a global shareholder base means having a lower cost of capital and hence a greater equity value for two main reasons: First, because the risks of equity are shared among more investors with different portfolio exposures and hence a different “appetite” for bearing certain risks, equity market risk premiums should fall for all companies in countries with access to global markets. Although the largest reductions in cost of capital resulting from globalization will be experienced by companies in liberalizing economies that are gaining access to the global markets for the first time, risk premiums can also be expected to fall for firms in long-integrated markets as well. Second, when firms in countries with less-developed capital markets raise capital in the public markets of countries (like the U.S.) with highly developed markets, they get more than lower-cost capital; they also import at least aspects of the corporate governance systems that prevail in those markets. For companies accustomed to less-developed markets, raising capital overseas is likely to mean that more sophisticated investors, armed with more advanced technologies, will participate in monitoring their performance and management. And, in a virtuous cycle, more effective monitoring increases investor confidence in the future performance of those companies and so improves the terms on which they raise capital. Besides reducing market risk premiums and improving corporate governance, globalization also affects the systematic risk, or “beta,” of individual companies. In global markets, the beta of a firm's equity depends on how the stock contributes to the volatility not of the home market portfolio, but of the world market portfolio. For companies with access to global capital markets whose profitability is tied more closely to the local than to the global economy, use of the traditional Capital Asset Pricing Model (CAPM) will overstate the cost of capital because risks that are not diversifiable within a national economy can be diversified by holding a global portfolio. Thus, to reflect the new reality of a globally determined cost of capital, all companies with access to global markets should consider using a global CAPM that views a company as part of the global portfolio of stocks. In making this argument, the article reviews the growing body of academic studies that provide evidence of the predictive power of the global CAPM as well as the reduction in world risk premiums.     

The Effect of Market Transparency: Volatility and Liquidity in the Korean Stock Market

Faced with unprecedented competition, stock markets should have fairness and transparency. The effects of market transparency for the stock market volatility and liquidity will be investigated using the case of the Korean stock market. The evidence from this study indicates that increasing the market transparency makes the price discovery process more efficient than before from the viewpoint of stock market volatility, and increases the stock market liquidity compared with before.     

STOCK MARKET OPENNESS AND MARKET QUALITY: EVIDENCE FROM THE SHANGHAI–HONG KONG STOCK CONNECT PROGRAM

We study the impact of capital market openness on high-frequency market quality in China. The Shanghai–Hong Kong Stock Connect program (SHHKConnect) opens China's stock market to foreign investors and offers a natural experiment to investigate this question. Using a difference-in-differences approach, we find that market liberalization leads to lower quoted spread, lower effective spread, lower market depth, and higher short-term volatility. Our findings imply that opening the markets to more sophisticated foreign investors is associated with higher competition and more cross-market arbitrage activities, narrowing the spread and reducing liquidity providers’ profits, but increasing the price impact and short-term volatility of connected stocks.     

Size matters: The impact of financial liberalization on individual firms

We attempt to answer the following questions: What are the revaluation effects and the impact on performance, volatility, and return correlation from stock market liberalization in emerging markets? These questions have been studied extensively at the market level but not at the firm level. Our results show significantly different impact of stock market liberalization across firms. Large firms tend to exhibit large revaluation effects, insignificant change in performance, large declines in volatility, and insignificant change in correlation from liberalization. Small firms show small revaluation effects, improved performance, smaller decline in volatility and decreases in correlation after liberalization.     

Price and Volatility Transmission across Borders

Over the past forty years, financial markets throughout the world have steadily become more open to foreign investors. With open markets, asset prices are determined globally. A vast literature on portfolio choice and asset pricing has evolved to study the importance of global factors as well as local factors as determinants of portfolio choice and of expected returns on risky assets. There is growing evidence that risk premia are increasingly determined globally. An important outcome of this force of globalization is increased comovement in asset prices across markets. This survey study examines the literature on the dynamics of comovements in asset prices and volatility across markets around the world. The literature began in the 1970s in conjunction with early theoretical developments on international asset pricing models, but it blossomed in the late 1980s and early 1990s with the availability of comprehensive international stock market databases and the development of econometric methodology to model these dynamics.     

Correlation in price changes and volatility of major Latin American stock markets

This paper seeks to investigate the short-run dynamics between five major Latin American stock markets (Argentina, Brazil, Chile, Colombia and Mexico). Unlike previous research on these markets, the joint distribution of stock returns is estimated as a vector autoregression (VAR) with innovations following an exponential GARCH process. Our study is carried out using closing stock market prices covering the period 25 May 1992 to 16 May 1997. The results revealed that these countries have significant first and second moment time dependencies. In general, the markets of these countries exhibit stronger volatility than mean spillovers. Further, our results indicate that these markets exhibit stronger volatility spillovers than other regions of the world. In view of these dependencies, the conditional correlations between these markets are different from their conventional simple counterparts. Since the correlation is the catalyst in portfolio diversification and an essential parameter in the calculation of the cost of capital, we anticipate that international investors and corporate managers will find our results very interesting.     

Time-Varying World Market Integration

We propose a measure of capital market integration arising from a conditional regime-switching model. Our measure allows us to describe expected returns in countries that are segmented from world capital markets in one part of the sample and become integrated later in the sample. We find that a number of emerging markets exhibit time-varying integration. Some markets appear more integrated than one might expect based on prior knowledge of investment restrictions. Other markets appear segmented even though foreigners have relatively free access to their capital markets. While there is a perception that world capital markets have become more integrated, our country-specific investigation suggests that this is not always the case.     

A note on foreigners’ trading and price effects across firms

We study the investment behavior of foreign investors in association with an equity market liberalization, and find a strong link between foreigners’ trading and local market returns. In the period following the liberalization, net purchases by foreign investors induced a permanent increase in stock prices, suggesting that local firms reduced their cost of equity capital. We also find a strong link between a firm’s fraction of foreign ownership and the magnitude of the cost reduction. Foreign investors seem to prefer large and well-known firms, and these firms realize the largest reduction in capital cost. Furthermore, our analysis suggests that foreigners increase their net holding in firms that have recently performed well. Analyzing foreigners’ performance, we find very little evidence of informed trading, suggesting that risk sharing is the most plausible explanation for the reduction of the cost of equity capital.     

GLOBALIZATION OF CAPITAL MARKETS AND THE ASIAN FINANCIAL CRISIS

This article has three basic aims: (1) to analyze the impact of the opening of their capital markets on the economies of host countries; (2) to investigate the causes of the Asian financial crisis; and (3) to evaluate the likely effects of the South Korean government's recent attempts to restructure its corporate sector. Although the recent Asian financial crisis has led some to question the merits of open capital markets and to call for regulatory restraints on capital flows across international borders, the scientific evidence suggests that the opening of stock markets to foreign investors has been largely beneficial for emerging economies. On average, stock market liberalization has been accompanied by increases in stock prices and reductions in stock return volatility, reductions in inflation, and reductions in the rate of currency depreciation. Much of the blame for the Asian currency crises is assigned to Asian policymakers' futile attempts to defy market forces by trying to maintain their currencies at artificially high levels. But a more fundamental cause of Asia's economic problems has been the widespread value destruction by Asian corporations, which has led to a lower value for the overall economy and weakened the banking sector. The government-directed banking systems and weak corporate governance structures (including managerial incentives to increase size and market share at the expense of shareholders) that characterize most Asian economies have resulted in systematic overinvestment, bloated payrolls, and sharp declines in corporate profitability. While applauding most of the Korean government's recent measures to reform the economy, the article expresses skepticism about the government-mandated restructuring of the chaebol known as the “big deal.” Rather than trying to direct the process of restructuring, Korean policymakers should limit their efforts to improving the market mechanism by increasing competition in the markets for capital, corporate control, and goods and services. The Korean market for corporate control transactions could be greatly improved by increasing the efficiency of bankruptcy proceedings and by allowing hostile takeovers by foreign as well as domestic investors. To increase the productivity of capital, Asian companies should seek to realign managerial with shareholder interests by tying compensation to measures of value creation like EVA.     

Stock market margin requirements and volatility: Implications for regulation of stock index futures

This article reexamines the evidence on the relationship between stock market margin buying and volatility, and discusses the implications for the regulation of futures markets margin requirements. Post-war data provide no evidence of a link between the initial margin requirements set by the Federal Reserve and stock market volatility. Over the entire period in which the Federal Reserve has set margin requirements (1934-present), there is a correlation between margin requirements and margin debt on the one hand and volatility on the other. However, margin debt is not primarily associated with downside volatility and margin requirements are not primarily associated with upside volatility, as would be expected if margin buying were the cause of the volatility. Thus, the experience with stock market margin requirements provides no support for regulating futures markets margins in order to curb volatility. While this evidence does not rule out the possibility that margin buying contributed to the speculative boom of the 1920s and the 1929 crash, margin debt represented a much greater fraction of the 1929 stock market than have stock market futures in the 1980s. Even taking the experience of the 1920s into account, therefore, there is still no justification for regulating futures margins in order to curb volatility.This article was prepared for the Columbia Center for the Study of Futures Markets Conference on Regulatory and Structural Reform of Stock and Futures Markets.