中国股票市场对上市公司违规行为有治理效应吗?

中国股票市场对上市公司的违规行为是否进行了有效治理,上市公司投资者是否对上市公司发生的违规行为给予了惩罚。研究结果表明。股票市场并未对上市公司的违规行为进行惩罚,通过股票市场产生的外部治理机制失效。因此.除了以更科学、合理的制度安排等事前契约来规范主体行为外,客观上还必须要有更具指导性的行为准则——公司治理的伦理道德体系。     

Do sovereign rating announcements affect emerging market exchange rate correlations? A multivariate DCC-GARCH approach

This article investigates the effects of sovereign credit rating announcements on time-varying exchange rate return correlations for a sample of 11 emerging market countries over the period 2002–2015. The data set covers daily exchange rates and long-term foreign currency sovereign ratings, outlooks and watch list. The pairwise time-varying correlations are derived by corrected Dynamic Conditional Correlation (cDCC) modelling which is a member of multivariate Generalized Autoregressive Conditional Heteroskedasticity (GARCH) models family. Furthermore, to capture the global factor effect, a dynamic-weighted index is created by using dynamic principal component (DPC) analysis. Findings suggest that some of the emerging market exchange rate co-movements are affected by rating announcements. Upgrades of Moody’s and downgrades of Fitch lead to spillovers. Main source of these spillovers are sovereign credit rating changes of European countries, especially Czech Republic and Turkey. Countries with high amount of external debt, large current account deficit and speculative grade are more prone to be influenced by announcements on a foreign country’s long-term sovereign rating.     

Strategic factor markets,scale free resources,and economic performance: The impact of product market rivalry

This paper analyzes how scale free resources, which can be acquired by multiple firms simultaneously and deployed against one another in product market competition, will be priced in strategic factor markets, and what the consequences are for the acquiring firms' performance. Based on a game‐theoretic model, it shows how the impact of strategic factor markets on economic profits is influenced by product market rivalry, preexisting competitive (dis)advantages, and the interaction of acquired resources with those preexisting asymmetries. New insights include the result that resource suppliers will aim at (and largely succeed in) setting resource prices so that the acquiring firms earn negative strategic factor market profits—sacrificing some of their preexisting market power rents—by acquiring resources that they know to be overpriced. Copyright © 2014 John Wiley & Sons, Ltd.     

Sudden stops, banking crises and investment collapses in emerging markets

We evaluate whether financial openness leaves emerging market economies vulnerable to the adverse effects of capital reversals (“sudden stops”) on domestic investment. We investigate this claim in a broad sample of emerging markets during the period 1976–2002. If the banking sector does not experience a systemic crisis, sudden stop events fail to have a significant impact on investment. Bank crises, on the other hand, have a significant negative effect on investment even in the absence of a contemporaneous sudden stop crisis. We also find that openness to capital flows worsens the adverse impact of banking crises on investment. Our results provide statistical support for the policy view that a strong banking sector which can withstand the negative fallout of capital flight is essential for countries that open their economies to international financial flows.     

A lottery-preference-based explanation of realized kurtosis puzzle in Chinese stock market

High kurtosis corresponds to fat tails on both sides and under risk-aversion assumption investors’ dislike of left-tail loss outweighs their preference for right-tail gain. Therefore, high kurtosis characteristic of stock should predict high expected returns. However, the high-frequency-data-based empirical results on Chinese stock market are just the opposite, which we refer to as the ‘realized kurtosis puzzle’. Using the double sorts and firm-level cross-sectional regression methods, we further demonstrate investors’ preference for lottery-like stocks or lottery preference is key to solve the puzzle. Our further empirical research verifies stocks with higher retail investors’ shareholding proportion and unavailable for short show stronger ‘realized kurtosis puzzle’. In addition, the puzzle is particularly significant in high lottery preference periods while less apparent in low lottery preference times.     

The effects of haze pollution on stock performances: evidence from China

Haze pollution has become the most important environmental issue in China in recent years. Using the data of PM_2.5 concentration and stocks of listed companies located in Beijing between 2010 and 2014, this article investigates the effects of haze pollution on stock performances. Empirical results indicate that haze pollution has significant negative effects on stock returns and significant positive effects on stock volatilities, through the channel of investors’ mood. Furthermore, the effects of haze pollution on stock returns emerge gradually and the effects of haze pollution on stock volatilities weaken gradually over time during a trading day.     

基于EVA的国有商业银行股权激励机制探讨

随着商业银行股份制改革的不断深化和推进,解决内部人控制问题已成为商业银行法人治理结构完善的关键一步。而造成内部人控制的关键因素就是由于商业银行目前经营层薪金较低所导致的。因此针对这一问题的重要性,本文从目前薪金制度的缺陷入手,分析了推行股权激励在商业银行薪酬制度改革中的合理性;并针对目前我国的制度缺陷和股票期权自身的不足,提出了基于经济增加值(EVA)的股票期权激励,以解决商业银行目前薪金激励机制中的不足。     

Large versus small foreign exchange interventions

We use non-temporal threshold analysis to investigate the exchange rate effects of large versus small interventions. More than two decades of official daily data on intervention in the JPY/USD market facilitate our analysis. We find no evidence that small interventions exert a discernible influence on the exchange rate while large interventions significantly influence the exchange rate in the theoretically consistent manner. We conclude that small interventions may not be considered a determinant of the exchange rate while large interventions constitute an important element in our understanding, and modeling, of the exchange rate.     

The Role of Beta and Size in the Cross-Section of European Stock Returns

This paper examines the ability of beta and size to explain cross-sectional variation in average returns in 12 European countries. We find that average stock returns are positively related to beta and negatively related to firm size. The beta premium is in part due to the fact that high beta countries outperform low beta countries. Within countries high beta stocks outperform low beta stocks only in January, not in other months. We reject the hypothesis that differences in average returns on size- and beta-sorted portfolios can be explained by market risk and exposure to the excess return of small over large stocks (SMB). Consistent with recent US evidence, we find that after controlling for size, there is no association between average returns and exposure to SMB.     

正反馈交易模型与中国股市价格波动--对DSSW模型的扩展讨论

DSSW模型描述了在理性交易者和非理性交易者数量相等的设定下,正反馈交易者的交易行为以及金融资产价格的波动情况.针对中国股市特征,建立了扩展的六状态DSSW模型,讨论了信息交易者利用信息优势,借助正反馈交易者的跟风行为,操纵股价大幅波动,获取超额收益的行为.利用该模型分析了“庄家”内幕交易的五个阶段及其特征,据此提出建议:完善信息披露机制,加强对特殊波动股票的监控,改变股票盈利模式,树立价值投资理念.