沪港通对沪港两地股市联动影响机制分析

本文结合股市联动的两种机制结合沪港两地股市的实际情况提出相应的假设,对沪港通影响沪港两地股市联动的影响机制进行探讨,研究发现沪港通开通后,A+H股溢价并未缩小,有形机制对沪港联动性的影响有限。沪港市场间在极端情况下的联动性显著增强,这意味着沪港通加强了沪港市场间的投资者情绪传染,通过无形机制对沪港联动性产生影响。     

基于股票市场分割条件下A、B股市场价量关系分析

应用结构向量自回归(SVAR)模型对中国A、B股市场间的价量关系进行动态的结构分析,从而检验中国证券市场分割理论。得出的主要结论是无论在当期相关关系上,还是动态的相关关系上,A、B股市场间价量关系的同期作用呈现出不对称特征,A股对B股信息传递功能更强。     

A股H股收益率和波动率研究

H股作为中国证券市场的一个有效补充,对中国吸引外资,促进国外投资者了解中国企业起到了极大的作用.考虑到H股市场得到信息的快捷性和准确性,本文重点研究了A股和H股之间收益率和波动率的关系,根据A股和B股相关研究和最后数据实证分析我们发现A股和H股两个市场的收益率并没有显著差异,然而H股的波动率却显著高于A股的波动率.而后对造成此结果的原因也进行了一些分析.     

基于股票市场分割条件下A、B股市场价量关系分析

应用结构向量自回归（SVAR）模型对中国A、B股市场间的价量关系进行动态的结构分析，从而检验中国证券市场分割理论。得出的主要结论是无论在当期相关关系上，还是动态的相关关系上，A、B股市场间价量关系的同期作用呈现出不对称特征，A股对B股信息传递功能更强。     

A、H股价差将进一步拉大

国际投资者在H股市场获利100％后，2007年纷纷把目光投向更有吸引力的亚太周边市场。而依然相对封闭的A股市场，未来还将受资金推动持续强势上升。流动性的差异，将导致未来3个月A、H股的价差逐渐拉大，两个市场的联动性会降低。[编者按]     

沪市A股与B股交叉相关的实证研究

中国证券市场与其他国家和地区的股市相比，最大区别点是“市场分离(market segmentation)”和“政策市场”。本为研究沪市中影响A、B股交叉相关系数的因素，先利用交叉相关系数计算A、B股交叉相关系数后，再利用多变量公式分析了决定A、B股相对情报力的因素。     

证券市场A股和B股指数协整性关系探讨

深入了解中国资本市场之间的联动关系对于决策的制定具有重要的作用。运用协整检验和Granger因果检验分析法对具有代表性的A股指数和B股指数的长期均衡关系和短期引致关系进行检验。结果表明,A股指数和B股指数联动性很强,存在长期的协整关系。     

中国A、B股时变的相关特征分析

本文主要分析深圳A股和B股市场之间信息的联系,从均值变动来看,B股对内开放前,两市完全处于分割状态;B股市场开放后,两个市场间存在信息的单向流动.从方差的联系来看,无论B股向境内居民开放前还是开放后,它们的条件方差之间均存在双向的信息流动,同时,它们之间有显著的条件波动相关性,而且,B股开放后它们之间的条件波动相关性有了显著提高.     

上市公司资产减值计提与市场价值的相关性研究

对上市公司资产减值计提与市场价值的相关性研究,可以对会计人员的职业判断及企业自发性会计政策选择做出科学的理论解释,可以为会计准则的不断完善提供政策建议,为估计会计政策选择对上市公司市场价值的影响提供理论依据。以2004—2006年沪市A股上市公司为研究样本,运用多元回归分析方法对上市公司资产减值计提与市场价值相关性的实证研究发现:资产减值计提比例与上市公司市场价值显著正相关;资产减值计提比例的变化与市场价值的变化也呈正相关关系。说明资产减值信息不仅具有影响公司市场价值的信息含量,而且对上市公司市场价值的变化有较好的解释能力。     

沪市A股过度反应的实证研究

以沪市A股2003年1月1日至2008年3月31日期同63个月的月收盘价为研究样本,在保持Debondt和Thaler的经典实证方法的基础上,利用两种不同的方法,对中国沪市A股市场进行过度反应现象检验,并将实证结果进行对比分析.经过检验,第一种方法检验出沪市A股市场存在反应不足现象,第二种方法检验出沪市A股市场不存在过度反应现象或反应不足现象,市场出现反转模式,两种方法都可以说明中国的证券市场,至少是沪市A股市场存在着异常现象.有效市场假说、行为经济学和中国证券市场现状的解释,可以理解过度反应和反应不足现象.     

Cross-listing and bonding premium: Evidence from Chinese listed companies

This paper examines whether cross-listing enables firms to earn a higher valuation. We contrast a sample of 580 Chinese firms cross-listed on the B-share market of China and 159 Chinese firms cross-listed on the Hong Kong H-share market against a control sample of domestic firms listed only on the A-share market of China. It is found that firms cross-listed on B-share and H-share markets both enjoy bonding premiums. Moreover, the bonding premium is larger for H-share firms than for B-share firms. Results show that the amount of bonding premium is positively related to the level of investor protection, which provides supporting evidence to the bonding theory.     

新股A+H发行方式探析

大型企业新股发行采取A H的方式,是A到H和H到A发行的必然结果,将对中国证券市场的发展产生诸多积极效应：为顺利实施大型企业新股A H发行,须采取引导舆论宣传、加强内地和香港市场的监管合作等措施：     

市场类型与盈余公告后的价格漂移现象:基于A、B股的比较

本文以A、B股并存这一中国独特的制度背景,研究了市场类型对盈余公告后价格漂移现象(PEAD)的影响极其机理.研究结果表明,市场类型对于PEAD程度有显著影响,A股PEAD程度显著大于B股.进一步的研究结果表明,A股市场的信息噪音、投机动机和投资需求均显著大于B股市场,这是导致这两个市场的PEAD存在显著差异的重要原因.本文利用一个独特的制度背景,研究发现市场类型是影响PEAD的重要原因,丰富了相关领域的文献,对投资者和监管层都具有重要的借鉴意义.     

On the Chinese B-share price discount puzzle: Some new evidence

Since February 2001, the Chinese Securities Regulatory Commission allowed domestic trade in foreign-currency denominated shares (B-shares) whose trade was originally restricted to foreign investors. We investigate possible effects of lifting the ownership restriction on the B-share discounts and explore why the discount persists even after removing the restriction. The discount is the percentage by which the B-shares are priced less than the otherwise identical Chinese-currency denominated shares held by domestic investors (A-shares). The results suggest that prices in the B- and A-share markets are closely linked over the long-run and that this equilibrium relationship strengthened in the post-lifting period. Our results further rule out information asymmetry as a reason for the continuation of the discount and support instead the importance of firm size and relative supply of the B-shares.     

中国企业会计准则与IFRS实质趋同的时间检验——来自同时发行A、H股上市公司的经验证据

运用调整后的盈余质量模型,以2000—2010年同时发行A股和H股的67家企业的财务数据为样本,研究实质趋同与时间的关系,结果表明:两套准则下,净利润和营业收入的差异绝对值,随着时间推移呈递减趋势;而总资产差异绝对值、股东权益差异绝对值、与时间关系并不显著。因此,利润表项目在实质趋同的进程中取得了巨大的成就,而资产负债表项目在实质趋同的进程中还有很长一段路要走。值得注意的是,从长期来看,股东权益在两套准则趋同中,差异的绝对值呈增大趋势,即股东权益项目在趋同进程中起着"回收站"的功能。     

The Changing Role of Financial Stress,Oil Price,and Gold Price in Financial Contagion among US and BRIC Markets

The objective of this paper is to explore the determining factors behind financial contagion between US and BRIC (Brazil, Russia, India, and China) equity markets. To this end, we investigate the effects of global macroeconomic factors on the time‐varying correlations among these markets obtained by asymmetric dynamic conditional correlation method. Utilizing quantile regression analysis, we examine the determinants of financial contagion at different levels of time‐varying correlations. The results of quantile regression analyses reveal that global financial crisis (GFC) (2008) leads to changes in the dependence structure between dynamic conditional correlations among equity markets and global macroeconomic factors, such as global financial stress, oil prices, and gold prices. Following the GFC, monetary, and fiscal policy changes in the BRIC markets and hence changing macroeconomic risks of these markets are conducive to these changes. Our findings also demonstrate the importance of cross‐market rebalancing channel for information transmission across US and BRIC markets.     

Half-day trading and spillovers

This paper investigates the linkage of returns and volatilities between the United States and Chinese stock markets from January 2010 to March 2020. We use the dynamic conditional correlation (DCC) and asymmetric Baba–Engle–Kraft–Kroner (BEKK) GARCH models to calculate the time-varying correlations of these two markets and examine the return and volatility spillover effects between these two markets. The empirical results show that there are only unidirectional return spillovers from the U.S. stock market to the Chinese stock market. The U.S. stock market has a consistently positive spillover to China’s next day’s morning trading, but its impact on China’s next day’s afternoon trading appears to be insignificant. This finding implies that information in the U.S. stock market impacts the performance of the Chinese stock market differently in distinct semi-day trading. Moreover, with respect to the volatility, there are significant bidirectional spillover effects between these two markets.     

Spot‐futures spread,time‐varying correlation,and hedging with currency futures

This article investigates the effects of the spot‐futures spread on the return and risk structure in currency markets. With the use of a bivariate dynamic conditional correlation GARCH framework, evidence is found of asymmetric effects of positive and negative spreads on the return and the risk structure of spot and futures markets. The implications of the asymmetric effects on futures hedging are examined, and the performance of hedging strategies generated from a model incorporating asymmetric effects is compared with several alternative models. The in‐sample comparison results indicate that the asymmetric effect model provides the best hedging strategy for all currency markets examined, except for the Canadian dollar. Out‐of‐sample comparisons suggest that the asymmetric effect model provides the best strategy for the Australian dollar, the British pound, the deutsche mark, and the Swiss franc markets, and the symmetric effect model provides a better strategy than the asymmetric effect model in the Canadian dollar and the Japanese yen. The worst performance is given by the naïve hedging strategy for both in‐sample and out‐of‐sample comparisons in all currency markets examined. © 2006 Wiley Periodicals, Inc. Jrl Fut Mark 26:1019–1038, 2006     

Large trades and intraday futures price behavior

This study examines the effects of large trades executed by outside customer on the prices of futures contracts traded on the Chicago Mercantile Exchange. We find that, on average, large buyer-initiated trades have a larger permanent price impact (information effect) than large seller-initiated trades, whereas the opposite is found for the temporary price impact (liquidity effects) of large trades. These results are consistent with previous findings for block and institutional trades in equity markets. However, we also find that the information effects of large sells are larger than large buys in bearish markets, whereas the results are the reverse in bullish markets. The liquidity price effects of buys are larger than the liquidity price effects of sells in bearish markets whereas the reverse results hold in bullish markets. Our results are consistent with the hypothesis that the current economic condition is a key determinant of asymmetric price effects between large buys and large sells. © 2008 Wiley Periodicals, Inc. Jrl Fut Mark 28:1147–1181, 2008     

Liability driven investment with alternative assets: Evidence from Brazil

We study the portfolio choice problem for an asset-liability investor who invests in stocks, equity mutual funds, government bonds, short term interest, hedge funds, listed real estate, and commodities futures available in Brazil. Inflation and real interest play as important risk sources. We estimate the asset classes and liabilities time-varying conditional covariance structure using an asymmetric multivariate dynamic conditional correlation GARCH model and compare the asset-liability portfolio's global minimum variance allocation with Brazilian pension funds' market portfolio. The conditional covariance structure provides insights about the complex dynamic relationships between the asset classes and liabilities. We find that some (though not all) Brazilian alternative assets render strong diversification and liabilities hedging benefits for asset-liability investors. There are significant strategic asset allocation differences between the market portfolio and the liability driven portfolio as given by our model. We, therefore, question the Brazilian pension funds' allocation.