The Effect of Futures Market Volume on Spot Market Volatility

There has been considerable interest, both academic and regulatory, in the hypothesis that the higher is the volume in the futures market, the greater is the destabilizing effect on the stock market. We show that conventional approaches, such as adding exogenous variables to GARCH models, may lead to false inferences in tests of this question. Using a stochastic volatility model, we show that, contrary to regulatory concern and the results of other papers, contemporaneous informationless futures market trading has no significant effect on spot market volatility.     

Insurance Market Effects of Risk Management Metrics

We extend the classical analysis on optimal insurance design to the case when the insurer implements regulatory requirements (Value-at-Risk). Presumably, regulators impose some risk management requirement such as VaR to reduce the insurers’ insolvency risk, as well as to improve the insurance market stability. We show that VaR requirements may better protect the insured and improve economic efficiency, but have stringent negative effects on the insurance market. Our analysis reveals that the insured are better protected in the event of greater loss irrespective of the optimal design from either the insured or the insurer perspective. However, in the presence of the VaR requirement on the insurer, the insurer's insolvency risk might be increased and there are moral hazard issues in the insurance market because the optimal contract is discontinuous.     

信息披露监管的外部性——同行信息传递与市场学习

本文使用2001—2008年中国A股上市公司为样本,以信息披露违规公司的处罚公告为切入点,从信息披露监管外部性的角度,研究信息披露监管的有效性。实证结果表明,同行竞争者对处罚公告产生显著的信息传递效应,并且信息传递效应的程度与公司会计信息质量显著正相关,这说明监管当局对违规公司查处的信息披露监管产生了显著的外部性,并且这种外部性与会计信息质量显著正相关。同时,本文还发现会计信息质量的改进与同行公司对处罚公告的市场反应显著负相关,说明信息披露监管的外部性对公司信息披露行为有显著影响,使同行公司管理者在这一过程中产生了显著的市场学习行为。本文丰富了信息披露监管及其外部性的相关理论,并对上市公司信息披露监管具有重要的参考价值。     

Industry Information Transfers: The Effect of Information Environment

This study extends the information environment theory of Atiase (1985) that suggests an inverse relation between the information available about a firm and the security price reaction to its release of earnings. Non-announcing firms' security price responses are found to be inversely related to their market value but directly related to the number of peer firm articles appearing in the Wall Street Journal and the historical earnings correlations within their industry. The results suggest that information environment affects the security price relevance of a firm's own and its peer firms' earnings.     

普通投资者关注对股市交易的量价影响——基于百度指数的实证研究

搜索引擎的广泛应用促使互联网成为普通投资者获取信息的重要渠道。百度指数体现关键词被搜索的频率,在一定程度上表征着投资者对信息的关注程度。本文以上证180指数样本股为研究对象,以百度指数用户关注度衡量普通投资者关注度,揭示普通投资者关注对股票流动性及股票收益的影响机制。实证结果表明:在控制其他影响因素后,普通投资者高关注度将伴随高市场流动性,注意力会驱动投资者进行交易;对信息的当期关注会对股票收益产生正向影响,但这一现象将在一段时间后发生反转。     

The Effect of US Stock Market Uncertainty on Emerging Market Returns

We investigate the effects of US stock market uncertainty (VIX) on the stock returns in Latin America and aggregate emerging markets before, during, and after the financial crisis. We find that increases in VIX lead to significant immediate and delayed declines in emerging market returns in all periods. However, changes in VIX explained a greater percentage of changes in emerging market returns during the financial crisis than in other periods. The higher US stock market uncertainty exerts a much stronger depressing effect on emerging market returns than their own-lagged and regional returns. Our risk transmission model suggests that a heightened US stock market uncertainty lowers emerging market returns by both reducing the mean returns and raising the variance of returns. The VIX fears raise the volatility of emerging market returns through generalized autoregressive conditional heteroskedasticity (GARCH)-type volatility transmission processes.     

产品市场势力与股票市场交易量:基于异质信念的解释

基于2001年至2009年A股市场上市公司的数据,本文从异质信念的角度检验了产品市场势力与股票市场交易量之间的关系。结果发现产品市场势力的提高能显著促进个股的交易,这与Peress(2010)的研究一致。不同的是,我们发现产品市场势力提高能通过增加投资者的异质信念水平促进交易,这和本文的预期一致。另外,我们的结果还表明产品市场势力与投资者单笔的交易量显著正相关。     

Market Statistics and Technical Analysis: The Role of Volume

We investigate the informational role of volume and its applicability for technical analysis. We develop a new equilibrium model in which aggregate supply is fixed and traders receive signals with differing quality. We show that volume provides information on information quality that cannot be deduced from the price statistic. We show how volume, information precision, and price movements relate, and demonstrate how sequences of volume and prices can be informative. We also show that traders who use information contained in market statistics do better than traders who do not. Technical analysis thus arises as a natural component of the agents' learning process.     

The Effect of Market Regimes on Style Allocation

We analyse time-varying risk premia and the implications for portfolio choice. Using Markov Chain Monte Carlo (MCMC) methods, we estimate a multivariate regime-switching model for the Carhart (1997) four-factor model. We find two clearly separable regimes with different mean returns, volatilities, and correlations. In the High-Variance Regime, only value stocks deliver a good performance, whereas in the Low-Variance Regime, the market portfolio and momentum stocks promise high returns. Regime-switching induces investors to change their portfolio style over time depending on the investment horizon, the risk aversion, and the prevailing regime. Value investing seems to be a rational strategy in the High-Variance Regime, momentum investing in the Low-Variance Regime. An empirical out-of-sample backtest indicates that this switching strategy can be profitable, but the overall forecasting ability for the regime-switching model seems to be weak compared to the iid model.     

管理者能力与资本市场稳定

管理者能力是管理者有效率地利用企业资源创造价值的能力。本文以企业股价大幅下跌风险为切入点系统分析了管理者能力对资本市场稳定的影响。研究发现:管理者能力能够显著抑制企业未来股价大幅下跌的风险,具有市场稳定效应。这种稳定效应主要体现在管理者隐藏坏消息动机较强和隐藏坏消息空间较大(内部缺乏大股东治理和外部制度环境水平较低)的企业。进一步研究发现,管理者能力主要通过降低企业经营风险和提高企业治理水平等路径缓解企业未来股价大幅下跌的风险。本文丰富了管理者能力和股价下跌风险的研究,还对如何合理利用企业家资源维护我国资本市场平稳健康发展提供了重要的现实证据。     

国债跨市场转托管观状及对策研究

财政部2004年基准利率国债发行计划中有一个亮点,就是基准利率国债将全部跨市场发行,且发行次数猛增至去年的2.25倍,达到9期之多.加上已有的跨市场品种,到今年年底,跨市场国债总数至少达到16只,国债跨市场转托管现象日益普遍.     

经济政策不确定性对中国股票市场操纵的影响

在对交易型股票市场操纵行为的识别和度量的基础上,研究了经济政策不确定性(EPU)如何影响股票市场操纵.结果表明,在我国A股市场上交易型市场操纵的操纵者在不确定性的经济政策环境中是不确定性的厌恶者,并且可能并不是拥有信息优势的投资者.此外,还计算了股票超额收益率对经济政策不确定性指数的敏感程度,发现经济政策不确定性与市场操纵之间的关系受到股票超额收益率对经济政策不确定性的敏感程度的影响.这些发现揭示了宏观经济政策环境对我国股票市场交易型操纵行为的影响途径.     

The Effect of Tick Size on Price Clustering and Trading Volume

Proposals have been made for some stock exchanges to reduce the size of their trading tick in order to lower transactions costs and, as a result, attract more trading volume and firm listings. We investigate the impact of tick size on price clustering and trading volume when the minimum price change varies with price level. Controlling the firm specific variables, we find that a smaller trading tick tends to exacerbate price clustering. Furthermore, a reduction in tick size is more likely to increase trading volume if the shares are heavily traded. These results suggest that previous studies on other stock markets may have overstated the benefits of a smaller trading tick to traders.     

The Impact of Oportunidades on Consumption,Savings and Transfers*

In this paper, we estimate the effect of the Mexican conditional cash transfer programme, Oportunidades, on transfers, savings and consumption for treated households. We find positive effects on consumption of non‐durable and durable goods, an increase in savings coupled with a drop in the number and values of loans, and a reduction of in‐kind transfers received by households in treatment areas. These results are consistent with the existing evidence that conditional cash transfer programmes have beneficial effects in both the short and medium term, but that they partly crowd out private transfers.     

Cross-Listings and Home Market Trading Volume: The Case of Malaysia and Singapore

Cross‐listings of equities internationally are becoming more common. Using data for Europe and North America, previous studies reject the order flow diversion hypothesis, which states that international cross‐listings reduce home‐country trading volume. We test this hypothesis using data for equities cross‐listed in Singapore and Malaysia. We find that trading volume in Malaysia fell 42.9% when Singapore markets were closed for holidays. Furthermore, we show that trading volume in Malaysia did not increase following the implementation of regulations that ended the trading of Malaysian equities in Singapore in 1998. Hence, we reject the order flow diversion hypothesis.     

透明度对银行间债券市场流动性变化趋势的影响

为检验透明度制度变化对我国银行间债券市场流动性变化趋势是否有影响,本文将突变理论引入债券市场研究,并对我国银行间债券市场的综合流动性、国债流动性、政策性金融债券和短期融资券流动性进行突变检验。结果表明,我国银行间债券市场流动性数据的生成过程没有出现结构突变,整体上观察,我国银行间债券市场流动性呈平稳上升趋势。我们又使用非参数检验方法检验了透明度变化对流动性的影响,结果表明,透明度对流动性的影响因债券而各异,对整个银行间债券市场的流动性也因各种债券受到透明度的影响强度不同而不同。     

住房公积金政策对我国房地产市场的影响——基于SVAR模型的实证研究

本文利用1999年二季度至2010年一季度的数据,选取个人住房公积金贷款利率、全国房屋销售价格和全国房屋租赁价格作为分析变量,构建结构向量自回归模型,运用脉冲响应和方差分解方法,就住房公积金贷款利率对我国房价和房租的影响进行实证分析。结果显示,住房公积金政策对我国房价和房租的影响主要侧重于中长期效应,短期效应并不明显,基于此,提出政策建议。     

基于市场预期行为下我国货币政策效应分析

本文通过建立基于市场预期下银行间同业拆借利率与债券市场交易利率的时间序列的动态指标体系,对货币政策效应进行了更为深入的量化分析,这种量化是基于市场的真实行为所进行的,并利用其对我国的货币政策效应进行研究,以得出在我国的经济现实下市场预期与政策有效性之间的关系。     

中国股市涨跌停板对投资者交易行为的影响

利用A股市场的日内高频数据,研究我国股市涨跌停板制度是否存在"磁吸效应",从而判断涨跌停板的存在是否会影响投资者在面临个股较大涨跌幅时的交易行为.研究结果表明:一,我国A股市场涨跌停板的设定并不会导致投资者流动性风险的增加;二、投资者观察到股价大幅波动时会比较谨慎,涨跌停板的存在抑制了股价波动的进一步增大;三,临近收盘时,如果股价已下跌了较大的幅度,投资者的损失规避交易会造成股价的继续下跌.     

金融衍生市场的社会经济效应分析

金融一体化趋势加剧了世界金融中心的竞争和金融业务创新，衍生工具的出现是金融创新的主要体现，由于衍生产品具有保值、规避风险及虚拟性，现实运行中产生的社会经济效应发人深思，备受瞩目。本文从衍生工具与价格发现、泡沫经济、金融危机之间错综复杂的关系分析了由此产生的社会经济效应及对我国的重要启示，指出破产、亏损及市场风险、金融危机并非金融衍生工具本身的过错，一国的经济结构缺陷、临管体系松散及过度投机行为才是真正的诱因。