基于CAPM的黄金风险溢价研究

运用CAPM理论中的边际风险价格的概念,通过分析一个包含了黄金市场和股票市场在内的市场资产组合,定量给出了黄金的风险溢价。同时检验了黄金收益是否在CAPM框架内有效。在与我国股市进行比较之后,得出投资者可将黄金包括到投资组合中去,以取得更好的风险收益比。     

基于小波神经网络的高阶CAPM实证研究

本文在传统CAPM的基础上,引入了一个高阶的CAPM。借助小波神经网络在非线性函数逼近方面的优势,使用上海证券交易所股票数据分别对二阶至四阶CAPM进行了实证分析。最终的研究结果表明:就上海股市而言,12只大盘股组合已经能够有效分散非系统风险,而12只小盘股不能充分化解非系统风险,存在所谓的规模效应;训练后的网络预测显示,高阶CAPM无论是在预测精度还是预测稳定性上都要明显优于传统的CAPM,在一个非系统风险得到充分分散的证券组合中,加入三阶矩的CAPM已经能够比较准确地把握风险资产的市场定价。     

CAPM对我国封闭式基金定价的实证检验

本文以上证封闭式基金为样本,选取2007年12至2010年11月的月度数据,采用单指数模型、BJS两步法和横截面检验实证分析了我国基金市场对CAPM的适用性。CAPM并不适用于我国基金市场,原因在于基金市场的不成熟以及投资主体投资理念的非理性。同时CAPM条件过于苛刻,在对资本市场进行检验时应谨慎对待。     

An Empirical Re-Examination of the Cross-Section of Expected Returns: UK Evidence

This paper is a study of the Fama and French (1992) analysis in the UK context. Consistent with their findings, our results do not support a positive relationship between beta and average monthly returns. We find that book-to-market equity and market leverage are consistently significant in explaining UK average returns. Contrary to the Fama-French evidence, size has an insignificant effect on average returns. A puzzling negative beta-returns relationship is found in some monthly regressions,and results based on annual data reveal a reversal of betas for the smallest-size portfolios. Some possible explanations are offered for these findings.     

Sentiment-scaled CAPM and market mispricing

This study explores the conditional version of the capital asset pricing model on sentiment to provide a behavioural intuition behind the value premium and market mispricing. We find betas (β) and the market risk premium to vary over time across different sentiment indices and portfolios. More importantly, the state β derived from this sentiment-scaled model provides a behavioural explanation of the value premium and a set of anomalies driven by mispricing. Different from the static β–return relation that gives a flat security market line, we document upward security market lines when plotting portfolio returns against their state βs and portfolios with higher state βs earn higher returns.     

股指期货的套期保值问题

中国金融市场即将推出股票指数期货。本文吸收和借鉴了国外的研究成果,对股指期货的套期保值问题进行了系统研究,采用方差法和β系数法对风险最小化的套期保值比率进行了充分论证,并结合案例进行了模拟计算。本文根据资本资产定价模型,建立了一元线性回归方程,对流行的β系数法进行了检验和重要修正,对套期保值实践具有重要的指导意义。     

The Role of U.S. Market on International Risk‐Return Tradeoff Relations

We study the intertemporal risk‐return tradeoff relations based on returns from 18 international markets. We find striking new empirical evidence that the inclusion of U.S. market returns significantly changes the estimated risk‐return tradeoff relations in international markets from mostly negative to predominantly positive. Our results are consistent with the lead‐lag effect between U.S. and international markets in the sense of Rapach, Strauss and Zhou.     

Testing the CAPM revisited

This paper re-examines the tests of the Sharpe–Lintner Capital Asset Pricing Model (CAPM). The null that the CAPM intercepts are zero is tested for ten size-based stock portfolios and for twenty five book-to-market sorted portfolios using five-year, ten-year and longer sub-periods during 1965–2004. The paper shows that the evidence for rejecting the CAPM on statistical grounds is weaker than the consensus view suggests, and highlights the pitfalls of testing multiple hypotheses with the conventional heteroskedasticity and autocorrelation robust (HAR) test with asymptotic P-values. The conventional test rejects the null for almost all sub-periods, which is consistent with the evidence in the literature. By contrast, the null is not rejected for most of the sub-periods by the new HAR tests developed by Kiefer et al. (2000), Kiefer and Vogelsang (2005), and Sun et al. (2008).     

国外战略风险管理理论研究综述

战略风险管理研究已成为国外战略学界和风险学界研究的热门之一。文章从战略风险概念的分辨、战略风险构成要素和战略风险度量的角度对国外战略风险管理理论进行了综述,并在此基础上对未来战略风险管理的发展提出展望,对我国战略风险管理理论的研究与实践具有指导意义。     

资本资产定价模型中的贝塔值确定方法研究——非上市公司和投资项目

估计贝塔(β)值是运用CAPM进行投资决策的重要环节.本文基于非上市公司和投资项目难以从公开市场获得充分数据以估计β值的实际情况,研究了在上市公司β值基础上进行调整,进而估计非上市公司和投资项目β值的方法,包括基于财务杠杆不同的β值调整和基于经营杠杆不同的β值调整.并提出当不存在性质相同或类似上市公司时,基于确定性等值估计非上市公司和投资项目β值的方法.