Systemic Risks Spillovers and Interdependence among Stock Markets: International Evidence with Covar‐Copulas

Empirical studies have provided ample evidence on the potential benefits of international diversification with portfolios that consist of both domestic and foreign assets. This coupled with sudden and periodic crashes in global and developed equity markets have stimulated the interest of investors to diversify across markets that have the potential to provide decorrelation with global markets during turbulent periods. At the same time, international diversification may intensify cross‐border listing of stocks with its antecedent implication of shocks transmission. The above have engendered renewed interest among researchers to explore the dependence levels and spillover effects of shocks among emerging and developed equity markets. This paper examines tail dependence structure and (extreme) systemic risks spillover effects among international equity markets using advanced econometric techniques that underpin the modelling of asset returns. We find evidence of low positive significant dependencies between all African markets and their developed counterparts, except for Egypt. Although no evidence of spillover effects to the markets in Africa was found, both unidirectional and bi‐directional causality between some African and developed equity markets is found, albeit with differences. We are unable to ascribe the dynamics in the causality structure to level of market integration. It is inferred that the degree of individual local markets interdependence with developed counterparts may reflect the relative size, liquidity and degree of foreign investors' participation.     

Who Influences the Asian–Pacific Real Estate Markets: The US,Japan or China?

As rapid economic growth in China has led to significant appreciation of urban real estate market values, this study examines China's influence on Asian–Pacific real estate markets by focusing on their respective market integration with the US, Japan and China during the period January 2005 to December 2017. Market integration is examined by unconditional and time‐varying conditional correlations, nonlinear Granger causality and dynamic connectedness effects. Overall, although the US and Japanese real estate markets have significantly influenced return and volatility in the regional markets, China has emerged as another major regional real estate volatility leader with rising influence over volatility integration, especially during the 2007–2011 crisis period. Financial crises have strengthened China's volatility connectedness effects and market integration with other Asian–Pacific real estate markets. Our results imply that the benefits of regional portfolio diversification may be declining as volatility integration across the Chinese and Asian–Pacific real estate markets becomes stronger. Therefore, diversified global investors should pay greater attention to these real estate markets.     

Estimating time-varying currency betas with contagion: New evidence from developed and emerging financial markets

This paper examines the conditional time-varying currency betas from five developed and six emerging financial markets with contagion and spillover effects. We employ a trivariate asymmetric BEKK-type GARCH-in-Mean (MGARCH-M) approach to estimate the time-varying conditional variance and covariance of returns of stock market index, the world market portfolio and bilateral exchange rate between the US dollar and the local currency. The results show that the world market and currency risks are not only priced in the stock markets, but also time-varying. It is found that currency betas are much more volatile than the world market betas, and currency betas in the emerging markets are more volatile than those in the developed markets. We find empirical evidence of contagion effect and spillovers between stock market and foreign exchange market during the recent global financial crisis, and the effect is stronger in the emerging markets than that in the developed markets. Two applications are provided to illustrate the usefulness of time-varying currency betas.     

MACROECONOMIC UNCERTAINTY AND CONDITIONAL STOCK MARKET VOLATILITY IN SOUTH AFRICA*

This paper analyses how systematic risk emanating from the macroeconomy is transmitted into stock market volatility using augmented autoregressive Generalised Autoregressive Conditional Heteroscedastic (AR‐GARCH) and vector autoregression (VAR) models. Also examined is whether the relationship between the two is bidirectional. By imposing dummies for the 1997‐1998 Asian and the 2007‐2009 sub‐prime financial crises, the study further analyses whether financial crises affect the relationship between macroeconomic uncertainty and stock market volatility. The findings show that macroeconomic uncertainty significantly influences stock market volatility. Although volatilities in inflation, the gold price and the oil price seem to play a role, it is found that volatility in short‐term interest rates and exchange rates are the most important, suggesting that South African domestic financial markets are increasingly becoming interdependent. Finally, the results show that financial crises increase volatility in the stock market and in most macroeconomic variables, and, by so doing, strengthen the effects of changes in macroeconomic variables on the stock market.     

RISK–RETURN TRADE‐OFF AND BEHAVIOUR OF VOLATILITY ON THE SOUTH AFRICAN STOCK MARKET: EVIDENCE FROM BOTH AGGREGATE AND DISAGGREGATE DATA

The study analyses the nature and behaviour of volatility, the risk–return relationship and the long‐term trend of volatility on the South African equity markets using aggregate level, industrial level and sectoral level daily data for the period 1995‐2009. By employing dummy variables for the Asian and the sub‐prime financial crises and the 11 September political shock, the study further examines whether the long‐term trend of volatility structurally breaks during financial crises and major political shocks. Three time‐varying generalised autoregressive conditional heteroskedasticity models were employed: one of them symmetric, and the other two asymmetric. Each of these models was estimated based on three error distributional assumptions. The findings of the study are as follows: First, volatility is largely persistent and asymmetric. Second, risk at both aggregate and disaggregate level is generally not a priced factor on the South Africa (SA) stock market. Third, the threshold autoregressive conditional heteroscedasticity (TARCH) model under the generalised error distribution is the most appropriate model for conditional volatility of the SA stock market. Fourth, volatility generally increases over time, and its trend structurally breaks during financial crises and major global shocks. The policy and investment implications of the findings are outlined.     

Federal Reserve Communications and Emerging Equity Markets

Work on the impact of U.S. monetary policy on emerging financial markets mostly focuses on official target rate announcements; empirical evidence using data on informal communication channels, such as speeches, is scant. Employing a unique data set covering formal and informal communication channels in a generalized autoregressive conditional heteroskedasticity model framework, we provide comprehensive evidence on the effects of U.S. monetary policy on 17 emerging equity market returns over the period 1998–2009. We find, first, that both monetary policy actions and communications have a significant impact on market returns. Second, target rate change surprises are an important driver of emerging market returns. However, informal communications—particularly when taking into account their higher frequency—have a larger (cumulative) influence on returns than do target rate surprises. Third, during the recent financial crisis, central bank communication played an even more pronounced role. Finally, American emerging markets react more to communications than do non‐American markets.     

REGIONAL INTEGRATION OF EQUITY MARKETS IN SUB-SAHARAN AFRICA

Equity markets in developing and emerging economies have grown in number and importance as a result of financial market globalisation. However, their role in economic growth and development is enhanced if nascent markets are integrated with well‐established ones. Market integration, measured by the transmission of returns volatility, is identified across a sample of SSA countries, using a unique dataset. Evidence for potential integration between financial markets in Sub‐Saharan Africa (SSA) is found. Spillovers are found across markets, some unidirectional and others bi‐directional. However, continued illiquidity and incomplete institutions indicate that an integrated financial community remains premature, and considerable regulatory reform and harmonisation will be necessary for this to succeed.     

Long-Run Comovements in East Asian Stock Market Volatility

Two integrated stock markets are generally subjected to common shocks revealing that commonalities in fundamentals drive their underlying return processes. In such a case, volatility series should share a long-run component although their transitory components might temporary diverge. In this paper, we investigate stock market integration in East Asia by analyzing the co-persistent nature of their ex-post observed volatility. Using recent fractional cointegration techniques, we find that volatility of several markets converges in the long run to a common equilibrium. Our results reveal that a global integration process drives the most developed markets of the region, while no evidence of co-persistence appears for emerging markets.     

The Korean stock market volatility during the currency crisis and the credit crisis

This paper studies the volatility of the Korean stock market during the Asian currency crisis of 1997–1998 and the global credit crisis of 2008–2009. We use a fad model with Markov switching heteroskedasticity, which was first proposed by Kim and Kim (1996). Using the monthly data from January 1980 to October 2009, we find that the volatility of the transitory component of the stock return, or fads, increased during the currency crisis, but did not rise much during the credit crisis. It implies that the stock price fluctuations were not driven by irrational sentiments during the recent global crisis as much as during the former crisis. However, when we consider the dollar value of the Korean stock index in order to estimate the volatility that foreign investors confront, we find that the volatility of the transitory component was raised during the credit crisis as well as during the currency crisis. That is, foreign investors experienced greater volatility than domestic investors in the recent financial market turmoil. This asymmetric volatility that domestic and foreign investors face is one of the characteristics of the credit crisis.For more detailed analysis, the same model was applied to the weekly data from January 2005 to October 2009 and provided the result that the data measured by won–dollar exchange rates were more increased than the raw data. It holds that foreign investors confronted much greater volatility than domestic investors while the stock volatility was relatively lower in the credit crisis state than in the currency crisis state.     

东亚股票市场的一体化及其趋势——基于股指趋同性的分析

伴随着国际资金的频繁流动,东亚金融市场成为国际证券投资的主要地区。东亚各国和地区为了使其股票市场健康稳定发展,采取了一系列措施增强其区域内股票市场的一体化程度。本文通过Johansen协整,方差分解等方法,分析了当前东亚股票市场的股票指数与两大国际股票市场(美国和日本)股票指数的趋同性,以此为基础讨论东亚股票市场的全球一体化程度与区域一体化程度。本文研究发现,东亚股票市场的一体化程度不高,但其全球化程度高于其区域化程度。     

亚太地区股票市场的联动程度——基于次级贷冲击的研究

本文从长期关系、短期作用和方差分解方面,分析了次级贷危机前后亚太股市的联动程度。首先,协整检验表明,亚太股市存在长期均衡关系,但这种关系在次级贷危机前后发生了明显的结构转变。其次,Granger非因果检验表明,亚太股市在次级贷危机后,市场间短期作用大大加强。再次,我们定义了单个市场联动程度判断准则,并且结合方差分解发现,亚太地区股市在次级贷危机后单个市场独立性显著降低。总体而言,亚太地区股市在次级贷危机之后联动程度进一步加强,支持弱分割市场理论;美国股市是地区股市领导者;日本股市变化最大,次级贷危机后,市场独立性变得最弱;中国大陆股市也不断融入区域市场。建议政府和投资者对于本国(本地区)之外的实体经济和股市风险都要密切关注。     

The Impact of the US Interest Rate Hike on Emerging Market Economies and the Belt and Road Initiative

Since the end of 2015, the US Federal Reserve has raised its benchmark interest rate nine times. This has led to capital outflows and asset depreciation in many emerging market economies. The present paper examines the factors that determine the financial volatility of emerging markets in the face of external shocks. By calculating the capital flows of 30 emerging markets from 1990 to 2018 and conducting panel regression, this paper finds that countries with good infrastructure facilities, a sound banking system and high economic growth have significantly lower cross‐border financial risks. An implication from the empirical analysis is that emerging countries would benefit greatly by actively taking part in the Belt and Road Initiative. The framework of the Belt and Road Initiative allows emerging countries better access to China's massive consumer market to promote trade and long‐term growth. Their quality of infrastructure can be improved through cooperation with China in infrastructure investment. They can also jointly establish a cooperative financial framework to enhance regional financial stability. These strategies will reduce systematic financial risks and counteract the negative impacts of US interest rate hikes.     

THE CHANGING EFFICIENCY OF AFRICAN STOCK MARKETS

This paper classifies formal African stock markets into four categories and discuses the principal characteristics of the seven markets covered in this study: South Africa, Egypt, Morocco, Nigeria, Zimbabwe, Mauritius and Kenya. Using a GARCH approach with time‐varying parameters, a test of evolving efficiency (TEE) is implemented for periods starting in the early 1990s and ending in June 2001. This test detects changes in weak form efficiency through time. The TEE finds that the Johannesburg stock market is weak form efficient throughout the period, and three stock markets become weak form efficient towards the end of the period: Egypt and Morocco from 1999 and Nigeria from early 2001. These contrast with the Kenya and Zimbabwe stock markets which show no tendency towards weak form efficiency and the Mauritius market which displays a slow tendency to eliminate inefficiency. The paper relates weak form efficiency to stock market turnover, capitalisation and institutional characteristics of markets.     

Asset Price Bubbles: Existence,Persistence and Migration

Econometric tests are performed for the detection and migration of asset‐price bubbles in the housing, currency and stock markets of seven countries. This set of countries includes both developed and emerging economies that have good historical data on housing prices. Our empirical results suggest that this type of exuberant behaviour in prices occurs more frequently in the housing market than in the currency and stock markets. Additionally, we find significant evidence of bubble migration across markets within some of the studied countries.     

Lessons from the global financial crisis – the case of Mainland China and Hong Kong

Abstract

The analysis of the intertwined reactions of Hong Kong and Mainland China to the 2008 Global Financial Crisis is considered in this study through the lenses of their stock markets. The GARCH-based analysis of stock market performance over the period December 2011–December 2014 shows that trade and equity sectors were the sectors most affected by the global recession; volatility was prevalent on the Shanghai stock market, whereas volatility persistence characterised the Hong Kong stock market. The results also show that the two stock markets recovered quite quickly. Tight controls applied by the financial authorities helped ensure some stability during the crisis.     

A long-run relationship between Eastern European stock markets? Cointegration and the 1997/98 crisis in emerging markets

A Long-Run Relationship between Eastern European Stock Markets? Cointegration and the 1997/98 Crisis in Emerging Markets. — This paper describes the behavior of the Eastern European stock price indices for the period between 1995 and 1998. Particular emphasis has been directed toward the effects of the 1997/98 emerging market crisis. Using the Johansen methodology, a long-run relationship connecting these markets can be found for the pre-crisis period. The common stochastic trend vanished following the third quarter of 1997, and a massive change in the short-run behavior of the markets is shown. Developments on the Russian exchange are found to have a dominating influence during that period.     

LIQUIDITY AND VALUATION IN EAST AFRICAN SECURITIES MARKETS

This study estimates liquidity premiums using the recently developed Liu measure within a multifactor capital asset pricing model including size premiums and a time‐varying parameter model for the East African emerging markets of Uganda, Tanzania and Kenya together with London and South Africa. The evidence suggests that while size and liquidity effects are significant in the smaller emerging markets of Uganda and Kenya, they are less important in explaining returns in South Africa and London. Costs of equity are highest in Uganda followed by Kenya, with industrial and consumer non‐cyclical sectors being lowest, and then South Africa and London.     

基于金融周期视角下股票市场的联动效应研究

世界经济全球化已成为趋势,发达经济体的股市之间以及发达经济体与新兴经济体股市之间的联动性也在经济全球化的趋势中更加紧密。各国金融领域以及金融市场间的快速融合,不断形成统一规范的金融行为准则,也使得全球金融周期性特征越来越明显。文章选取世界五个主要股票市场指数为研究对象,按照已有研究对全球金融周期的划分,将该样本区间分成了繁荣期、衰退期和正常期三个阶段,然后基于这三个阶段分析了在不同金融周期五国股票市场指数收益率联动效应。基于实证研究结论,认为美国和欧洲股市联动性较强,与亚洲股市联动性相对较弱,且美国和中国股市之间联动性最弱,基本捕捉不到下尾相关。相关实证结论有利于国际投资者的投资组合管理,也有助于各国股票市场的风险规避。     

External balance sheets as countercyclical crisis buffers

The external balance sheets of many emerging market countries are distinguished by their holdings of assets primarily in the form of foreign debt and foreign exchange reserves, while their liabilities are predominantly equity, either foreign direct investment or portfolio equity. We investigate the claim that this composition served as a buffer for the emerging markets during the global financial crisis of 2008–09. We use data from a sample of 67 emerging market and advanced economies, and several indicators of the crisis are utilized: GDP growth rates in 2008–09, the occurrence of bank crises and the use of IMF credit. Our results show that those countries that issued FDI liabilities had higher growth rates, fewer bank crises and were less likely to borrow from the IMF. Countries with debt liabilities, on the other hand, had more bank crises and were more likely to use IMF credit. We conclude that the “long debt, short equity” (hold debt assets, issue equity liabilities) strategy of emerging markets did mitigate the effects of the global financial crisis.     

Cross‐border Mergers and Acquisitions and Financial Development: Evidence from Emerging Asia

This paper examines the relationship between cross‐border mergers and acquisitions (M&A) and financial development in emerging Asian economies. Bilateral cross‐border M&A data for nine emerging Asian economies covering 2000–2009 are analyzed with a sample selection model and a panel data model. The estimation results show that although the banking sector still plays a crucial role in facilitating cross‐border M&A, the role of equity markets has increased in importance because, in addition to cash, the issuance of common stock and the exchange of stocks have become popular forms of payment for M&A deals. Because of the relatively thin market, the primary corporate bond market plays a limited role in supporting cross‐border M&A, which is in contrast to the primary public bond market. However, for the secondary market, the corporate bond market is more effective in facilitating cross‐border M&A. The results also show that financial development in terms of stock and bond markets in their home countries tends to become more important when the target firms reside in more developed countries. In addition to financial development, the paper shows that most cross‐border M&A are invested in technology‐related and resource‐based industries while cheap labor industries are relatively less attractive.