The structure of information release and the factor structure of returns

We model how firms releasing information on different dates causes the CAPM to fail, requiring an additional factor based on the information structure to price assets. We exemplify this mechanism’s empirical relevance using quarterly earnings announcements, which cluster across months along size and book-to-market. Seventy percent of the alpha reduction from including SMB and HML occurs in the four main earnings announcement months. The information structure factor accounts for all of SMB and HML’s seasonal alpha reduction and one third of their overall alpha reduction. Controlling for size and book-to-market, exposures to SMB and HML vary with firms’ earnings announcement month.     

如何计算认股权证的资本成本

认股权证作为一种长期资金的筹资方式 ,其资本成本必须予以考虑。但是使用传统资本成本计算方法不能反映其真实成本。本文尝试使用B -S和CAPM模型来计算其资本成本 ,并用实例说明     

Keeping Up with the Joneses and the Home Bias

We argue that when individuals care about their consumption relative to that of their neighbours, a home bias emerges, that is investors overweight domestic stocks in their portfolios. Domestic stocks are preferred because they also serve the objective of mimicking the economic fortunes and welfare of the investor's neighbours, countrymen, and social reference group. We also demonstrate that globalization mitigates the home bias, and derive a modified international CAPM.     

A Comparison of Cost of Equity Estimates of Local and Global CAPMs

Cost of equity estimates are compared for three pricing models: the traditional local CAPM, the single (market) factor global CAPM, and the two‐factor global CAPM, with both market and currency index factors. For 2989 US stocks, the average difference in the cost of equity estimates is about 48 basis points between the local CAPM and the single‐factor global CAPM, and is about 61 basis points between the two global models. For 70 developed‐market ADRs, the corresponding average differences are 76 and 47 basis points, respectively. For 48 emerging‐market ADRs, the corresponding average differences are 57 and 70 basis points.     

多分辨高阶矩系统风险测度与定价模型研究

为改进传统Beta系数测量系统风险的不足,反映系统风险的动态特征,讨论了四阶矩的资本资产定价模型(CAPM)并将小波分析引入到高阶矩CAPM研究中。利用小波多分辨分析的特点,给出了小波高阶中心矩和高阶混合中心矩的定义,基于此给出了多分辨系统风险测度Beta、Gamm a、Theta的计算方法和多分辨CAPM,并从行为金融理论出发给出了多分辨高阶矩CAPM的金融背景解释。实证结果支持多分辨系统风险假说和多分辨高阶矩CAPM的成立,为构建动态投资组合分散金融风险的动态影响提供了证据。     

CAPM与投资项目的风险调整资本成本

公司投资某些风险项目的决策往往会改变公司的资本成本,如何估计调整后的资本成本是一个不可忽略的问题.本文以实例详细解释了如何运用CAPM来有效地估计风险调整后的资本成本以及如何根据调整后的资本成本做出合理的投资决策评价.     

中国A股与B股的市场分割性检验

本文以布莱克版CAPM(资本资产定价模型 )作为理论模型 ,修正国外先进的市场分割检验模式 ,运用较复杂的计量经济估计方法对我国A、B股市场的一体化 (或分割性 )进行实证研究。实证结果表明 ,中国A、B股市场在很大程度上是一体化的。     

基于CAPM的中国股市羊群行为研究——兼与宋军、吴冲锋先生商榷

本文首先对宋军和吴冲锋的《基于股价分散度的金融市场羊群行为研究》一文进行了分析 ,指出其在分析方法和论证逻辑两方面存在的问题。随后 ,本文以资本资产定价模型 (CAPM)为基础 ,建立了一个更为灵敏的羊群行为检验模型 ,并据此对我国股市进行了实证检验。研究结果表明 :在政策干预频繁和信息不对称严重的市场环境下 ,我国股市存在一定程度的羊群行为 ,并导致系统风险在总风险中占有较大比例     

含有高阶矩的CAPM模型探讨

现在,资本资产定价模型已经使用得非常广泛了。但是很多研究都表明,CAPM的实证表现不好。本文的主旨就在于探讨CAPM的基本假设,从而得到它实证表现不佳的根本原因,并在CAPM中引入了较高阶矩,发展和推广了CAPM模型。     

关于资本资产定价模型的疑问与思考

通过对资本资产定价模型的质疑,透析了资本资产定价模型的内在发展逻辑,并从经济学发展方向与研究方法上提出了未来资本资产定价模型的研究范式。