Transmission of Stock Prices and Volatility from the Influential Major Markets on the Emerging Market: A Case Study of the Korean Stock Market

Abstract

This study investigates how the 1997 crisis has changed the Korean market by focusing on price and volatility spillovers from the US, Chinese, and Japanese markets. Using the exponential general autoregressive conditional heteroskedastic (EGARCH) model, new information on stock prices originating in the US market was transmitted to the Korean market for all periods. The price spillover effect from the Japanese market to the Korean market became stronger from the crisis period. Asymmetry in the spillover effect on market volatility was more pronounced in the Korean market after the financial crisis.     

Intraday return and volatility spillover mechanism from Chinese to Japanese stock market

We analyze the mechanism of return and volatility spillover effects from the Chinese to the Japanese stock market. We construct a stock price index comprised of those companies that have substantial operations in China. This China-related index responds to changes in the Shanghai Composite Index more strongly than does the TOPIX (the market index of the Tokyo Stock Exchange). This result suggests that China has a large impact on Japanese stocks via China-related firms in Japan. Furthermore, we find evidence that this response has become stronger as the Chinese economy has gained importance in recent years.     

恒生股指期货与现货市场波动溢出效应实证分析

本文是针对股指期货市场的波动溢出效应所做的研究。使用香港交易所上市的恒生股指期货和恒生指数作为研究对象,首先利用各种计量检验,探讨了期货市场和现货市场之间的联动关系;其次利用GARCH模型探讨和刻画了期货市场封现货市场的溢出效应,最后得出了相关的结论。     

Examining Stock Volatility in the Segmented Chinese Stock Markets: A SWARCH Approach

Abstract

This study adopts the SWARCH model to examine the volatile behavior and volatility linkages among the four major segmented Chinese stock indices. We find strong evidence of a regime shift in the volatility of the four markets, and the SWARCH model appears to outperform standard generalized autoregressive conditional heteroskedasticity (GARCH) family models. The evidence suggests that, compared with the A-share markets, B-share markets stay in a high-volatility state longer and are more volatile and shift more frequently between high- and low-volatility states. In addition, the relative magnitude of the high-volatility compared with that of the low-volatility state in the B-share markets is much greater than the case in the two A-share markets. B-share markets are found to be more sensitive to international shocks, while A-share markets seem immune to international spillovers of volatility. Finally, analyses of the volatility spillover effect among the four stock markets indicate that the A-share markets play a dominant role in volatility in Chinese stock markets.     

Changes in the socialist countries: Contents and prospects

Abstract

This paper examines volatility transmission and conditional correlations behaviour between the US and the Asian stock markets considering the effect of the Global Financial crisis. One Asian mature market and 10 emerging markets are included in the sample. To carry out the analysis, we use a multivariate asymmetric GARCH model. Results show that there exists volatility transmission between the US and the Asian markets. Moreover, it is found that, after the crisis, volatility transmission patterns have barely changed. Finally, results suggest that the lower the country‘s level of development, the lower the correlation with the USA.     

我国A股市场中的波动性之谜与市场情绪

本文使用Campbell和Shiller(1988)基于对数线性RVF的VAR非线性Wald检验方法对我国A股1994-2009期间的数据进行实证研究,结果表明样本期间我国A股股价相对其基础价值表现出"过度波动"的迹象,无论是常数超额收益率模型还是V-CAPM模型都无法对此进行解释。通过进一步定义市场情绪指数来分析这种"波动性之谜"现象的原因,结果发现市场情绪和股市"过度波动"之间存在相互作用机制,市场情绪能够对股价波动提供额外的解释。     

Volatility and Volume in Chinese Stock Markets

The fact that stock market returns in Europe and the USA are characterised by conditional heteroscedasticity is by now well documented in a large literature. We address the question of whether the same is true of the four Chinese stock markets (Shanghai and Shenzhen A and B) over the period from 25 November 1994 to 27 April 2001. Using daily index data, we make two departures from the standard GARCH(1,1) model. First, we use exponential GARCH (EGARCH) to allow for asymmetry in the volatility, which may be present as a result of leverage effects. Second, we respond to evidence of two-way causality between volume and return (and return volatility) by introducing a simultaneous equation model of the relationship. The results of estimating the model indicate that asymmetry does not seem to be present to a significant degree, possibly as a result of lack of information or concern among Chinese investors. We find that volume appears to play a significant part in determining index volatility, which may reflect information arrival effects or may alternatively result from the direct impact of trading on volatility. At the same time, we also find that both the level of returns and their conditional variance have an impact on trade volume, probably because positive (negative) returns tend to attract (deter) investors into the markets.     

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.     

上海A、B股市场收益率波动性对比研究及预测

运用GARCH(1,1)-M模型对样本期内上海A、B股市场收益率波动性进行了对比研究及预测。结果显示:上证A、B股指数收益率序列均存在"ARCH/GARCH现象";上海A、B股市场中,期望收益与期望风险正向变动;上海A股市场记忆期长于B股市场;长期中,上海B股市场预期收益将超过A股市场。进一步结合基本面情况可知,上海B股市场具有相对较高的长线投资价值。     

沪深股市收益率及波动性特征分析研究

中国金融市场的波动性从来都是备受关注的,本文对2000年1月4日～2010年5月26日沪深两市的收益率数据进行实证研究,得出中国金融市场收益率具有尖峰厚尾的特征和ARCH效应。并检验股市的溢出效应与杠杆效应等一系列特征,得出深市具有单向的溢出效应以及沪深两市具有正的杠杆效应。最后结合中国的股市现状给出相关分析与建议。     

International spillovers of U.S. monetary uncertainty and equity market volatility to China’s stock markets

Due to the global economy that is currently being increasingly integrated and liberalized, the cross-country transmission of U.S. monetary policy surprises has become a critical issue attracting scholarly attention. This research thus extends the existing literature by assessing the causal linkages among U.S. monetary policy uncertainty (USMPU), equity market volatility, and China’s stock price index over the period from January 1994 to August 2021. We apply Granger causality in quantile analysis to explore the relationships in each quantile of the distribution in a comprehensible manner. The results indicate that equity market volatility and China’s stock price dynamics play little role in affecting USMPU. We also find that only greater changes in both positive monetary policy uncertainty and stock prices lead to changes in equity market volatility. Furthermore, fluctuations in monetary policy uncertainty and equity market volatility in the United States Granger-cause China’s stock prices. Knowing such causality results could prevent market participants from adopting a one-size-fits-all strategy.     

Volatility spillover effects in interbank money markets

Using daily data from 2006 to 2015, this paper applies alternative multivariate GARCH models and a modified version of the spillover index methodology proposed by Diebold and Yilmaz (Int J Forecast 28(1):57–66, 2012) to test the existence of shock and volatility contagion effects across interbank money markets. Overall, we find evidence that money markets are highly interrelated, exhibiting dynamic cross market effects. Moreover, we emphasize the pertinence of conditional covariances and we show that volatility spillovers are time-varying and very responsive to the major economic events, increasing in periods of higher turbulence, which reinforces the importance of closely monitoring the evolution of money markets.     

全球主要石油市场间的信息溢出效应分析

本文选取了全球主要的石油市场组合,以均值、方差、分位数为代理变量,运用Granger因果检验方法研究了市场的信息溢出效应。在过滤掉了均值因果关系后,着重分析了不同市场组合的波动溢出效应,判断了市场间的信息流向。在波动溢出分析的基础上,又进一步检验了极端上涨和极端下跌时的风险溢出关系,提出了非对称风险溢出的概念,并将其应用于石油市场。实证结果表明信息大多从信息效率高的市场流向信息效率低的市场,上涨侧的信息传递速度比下跌侧更高,强风险溢出证据是普遍的。对波动溢出与风险溢出的比较表明,风险溢出继承了波动溢出的大多数特征,表明方差Granger因果关系的存在是风险溢出的主要原因,二者的差异表明高阶矩存在的因果关系也可以导致风险溢出。     

Stock return seasonalities and investor structure: Evidence from China's B-share markets

This paper investigates whether seasonalities in daily stock returns are related to the trading behavior of individual and institutional investors. The change in the investor structure of B-share markets in Shanghai and Shenzhen after the abolition of ownership restrictions in 2001 provides a unique testing environment. We show that day-of-the-week effects are attenuated after the market entrance of Chinese individual investors who had previously not been allowed to trade in B-shares. Our empirical results suggest that institutional rather than individual investors are a main driving force behind such anomalies. In addition, we find evidence of reduced index return autocorrelation and US spillover effects in the post-liberalization period.     

Foreign Ownership and Firm Innovation: Evidence from Korea

ABSTRACT

This study examines whether foreign equity investment promotes domestic firms’ innovation activities. Using panel data on the Korean firms during the 1999–2013 period, we find that foreign ownership has a positive effect on firms’ innovation activities. Furthermore, we also show that, as compared to non-chaebol firms, chaebol firms’ innovation activity becomes much greater with the increase of foreign ownership. Finally, we investigate industry-level spillover effects of innovation. Specifically, we find that foreign ownership promotes innovation activities via forward linkage, the effect of which is also more pronounced in chaebol firms.     

Global commodity prices and global stock market volatility shocks: Effects across countries

We investigate the time-varying dynamics of global stock market volatility, commodity prices, domestic output and consumer prices. We find (i) stock market volatility and commodity price shocks impact each other and the economy in a gradual and endogenous adjustment process, (ii) impact of commodity price shock on global stock market volatility is significant during global financial crises, (iii) effects of global stock market volatility on the US output are amplified by endogenous commodity price responses, (iv) effects of global stock market volatility shocks on the economy are heterogeneous across nations and relatively larger in twelve developed countries, (v) four developing/small economies are more vulnerable to commodity price shocks.     

收益波动与随机冲击的非对称性影响：中国与美国股票市场的对比

通过讨论股票收益与随机;中击之间的关系,对中国股票市场和美国股票市场进行了对比研究。研究中使用了中国上海和深圳股票市场1990年12月31日至2005年12月30日的两市A股算术平均周指,以及美国股票市场1973年1月2日至2004年月12月30日的标准普尔500周指。在进行经验研究的过程中,分别使用了线性GARCH模型和GJR—GARCH模型计量股票收益的条件波动——即模型中的条件方差。研究发现,中国股票市场自1990年——1995年波动剧烈,之后波动趋于平缓,而美国股票市场在研究期间内收益波动一直处于一定范围内。同时还发现,美国股票市场的随机冲击对股票收益产生非对称性影响,即负冲击使股票收益产生的波动大于正冲击。而在中国股票市场却找不到相似的证据。鉴于对中国股票市场收益波动的研究结果,在剔除1996年以前的数据之后又进行了扩展研究,但是似然比率检验结果表明,正冲击对股票收益的影响还要略强于负冲击。     

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.     

Chinese exchange rate and price effects on G3 import prices

This paper explores the degree of price and exchange rate interdependence between China and the G3 (US, Japan and the Euro-zone) by undertaking a VAR based shock analysis. A GARCH framework is also employed to derive the conditional variances to uncover the extent of volatility transmission. We address two key issues. First as there have been concerns about low value-added cheap Chinese goods flooding G3 markets, we attempt to measure the impact of Chinese prices on G3 import prices. Second, we focus on the transmission of exchange rate shocks – a subject which we approach by examining shocks in China's bilateral exchange rate with each of these major trading partners (the US, Japan and the Euro Area). Our results indicate that reduced import prices from China are the channel through which aggregate domestic prices in the G3 remain depressed, while the impact of the RMB exchange rate with G3 currencies appears less powerful. This finding implies that the Chinese authorities’ RMB exchange rate policy is relatively unimportant and, in particular, that a revaluation of the RMB would not do much to reduce the US trade deficit. In terms of volatility spillover, the relatively flexible RMB exchange rate against the Euro results in RMB-EUR volatility having a stronger influence than the more tightly controlled RMB-USD rate on the volatility of Chinese export prices.     

特质波动、风险溢价与学习效应

本文是一项实证研究,分析中国证券市场中股票特质波动性(Idiosyn-cratic Volatility)的风险溢价问题。我们发现较高波动性的投资组合在下一期收益率反而较低,为了解释这个看起来反常的现象,我们引入投资人逐步了解、发现上市公司盈利能力的学习过程。类似Lucas(1978)的一般均衡定价公式说明,不完全信息和学习过程会导致股票价格出现均值回归的现象(Mean Reversion),并且盈利能力不确定性越高的公司,股价向均值回归的趋势越明显,由此导致下一期收益率的反转。