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1.
小公司效应--来自沪市的经验证据   总被引:1,自引:0,他引:1  
通过对上海股票市场250家上市公司2000~2003年的实际收益率、正常收益率和超额收益率进行实证研究,得出上海股票市场和欧美股票市场一样,存在小公司效应,公司规模大小和该股票的市场收益率之间呈相反的关系.  相似文献   

2.
"规模效应"是以股票市值为衡量标准的公司规模的大小,与该股票的市场收益率之间成相反的关系。本实证研究的目的就是验证我国股票市场是否也同西方发达国家的股票市场一样存在着"规模效应"。本文通过全样本下"规模效应"实证研究,验证在2001~2005年间,我国股票市场是否存在"规模效应",为制定投资策略建议提供理论依据。  相似文献   

3.
概述 在分析股票市场收益率的相关因素时,许多经验性的规律特征,如季度特征、周一日效应、规模效应、一月效应等,游离在传统的资本资产定价模型的预测之外,而在市场上又现实存在.公司的规模效应是其中比较重要的一个并具有一定的普遍性,研究者发现在许多较为成熟的证券市场皆存在着规模效应,表0是美国三大证券市场NYSE、AMEX和NASDAQ的挂牌股票收益率与规模之间的关系(法莫和佛郎斯),研究时段为1963年7月到1990年12月.表0显示了收益率与规模的一种反向关系,即在同一时间段内较小公司的股票倾向于具有较高的收益率,特别是规模最小的一个分组,其收益率明显高于第二个分组和其他的分组,这种效应被称为"规模效应",又称为"小公司效应".为检验在中国证券市场的规模效应问题,本文以上海股票市场为例,对其加以验证.  相似文献   

4.
我国从1990年的第一只粮食期货开始,到目前的年交易总额达到70万亿,期货经历了蓬勃发展的历程,其市场规模逐渐扩大,在经济中的重要性日渐突出。本文通过实证分析,对我国期货市场收益率及其波动周日历效应进行研究,得出期货市场的收益率和波动均存在一定的周日历效应,收益率的周日历效应要强于波动的周日历效应等结论。  相似文献   

5.
我国从1990年的第一只粮食期货开始,到目前的年交易总额达到70万亿,期货经历了蓬勃发展的历程,其市场规模逐渐扩大,在经济中的重要性日渐突出。本文通过实证分析,对我国期货市场收益率及其波动周日历效应进行研究,得出期货市场的收益率和波动均存在一定的周日历效应,收益率的周日历效应要强于波动的周日历效应等结论。  相似文献   

6.
本文以2007年7月至2011年8月在香港发行人民币债券的74家公司发行的87支离岸人民币债券为研究对象,运用事件研究方法对这些离岸人民币债券发行的公告效应及其影响因素进行了实证研究。结果表明,在我们研究的事件窗口中,在香港发行人民币债券会对公司股价产生显著为负的公告效应,此效应近似等于我国公司在国内股权融资所产生的公告效应,小于可转债和公司债发行时所产生的效应。横截面的数据回归分析表明,股票的累计异常收益率与公司的规模、信用评级和债券的相对规模成正相关关系,与债券的期限、公司的固定资产比率、负债率和成长性不存在显著的相关关系。  相似文献   

7.
经典公司理论表明,作为硬约束,债务融资能够在一定程度上降低公司内在的代理成本,从而提高公司经营效率。文章利用上海证券交易所A股上市的522家上市公司2003-2008年的财务报表相关数据对此做一个实证研究。时间固定效应模型回归的结果显示,我国上市公司的资产收益率与债务融资率之间呈负相关关系,国内上市公司的债务融资并不能有效控制经营者为最大化自身收益而采取的机会主义行为,代理成本的存在一定程度上降低了公司经营效率。  相似文献   

8.
通过对部分高管进行访谈,并运用中国上市公司2007~2013年的平衡面板数据进行实证检验,结果表明:高管声誉激励强度与公司规模显著正相关,高管人力资本在两者之间具有中介作用;声誉激励通过与显性激励的交互效应从而对公司绩效产生间接的效用,具体而言,声誉激励与薪酬激励之间存在互补效应,与股权激励之间存在互替效应;产权性质能够对高管声誉激励效用产生显著的影响。  相似文献   

9.
本文通过对1994-2004年中国所有上市公司的流通股规模、总市值规模与股票收益率的关系运用截面回归的方法进行实证研究,发现无论上市公司的流通股规模还是总市值规模都与股票的收益率呈负相关关系,而且在剔除风险因素以后,公司规模仍然与异常收益率呈负相关关系,且具有统计上的显著性。中国股市存在小公司效应。这说明中国股票市场不是半强有效的。  相似文献   

10.
费雪效应认为股票实际收益率同通货膨胀率呈正相关关系,而本文采用1996年1月到2009年10月的月度数据,对中国证券市场股票收益率与通货膨胀之间的关系进行实证研究的计量分析表明,在中国股票市场上,股票实际收益率与通货膨胀率没有一定的线性关系,因此产生费雪效应悖论,进而分析造成我国股市费雪效应悖论的原因并提出相关建议。  相似文献   

11.
Under clean‐surplus accounting, the log return on a stock can be decomposed into a linear function of the contemporaneous log return on equity, the contemporaneous log dividend–price ratio (if the stock pays a dividend), and both the contemporaneous and lagged values of the log book‐to‐market equity ratio. This paper studies the implications of this decomposition for the cross‐section of conditional expected stock returns. The empirical analysis reveals that the log accounting ratios capture cross‐sectional variation in both the conditional mean and conditional variance of log stock returns, which is consistent with the decomposition. It also brings fresh insights to the relation between firm size (market equity) and conditional expected stock returns. The evidence indicates that the conditional median return increases with firm size, while the conditional return skewness decreases with firm size. Empirically, the skewness effect outweighs the median effect, leading to the well‐documented inverse relation between size and average returns. The results of out‐of‐sample tests suggest that investors could use the information provided by the observed values of the log accounting ratios to formulate more effective portfolio strategies.  相似文献   

12.
This study explores the cross-sectional stock return behavior on the A-share market of the Shanghai Stock Exchange (SSE), which is segmented from world's other equity markets. We estimate the effects of beta, firm size, book-to-market equity ratio and a variable unique to the Chinese stock markets, the proportion of firm's floating (tradable) equity over total equity on SSE stocks over the period 1993–2002. We find that smaller firms and value stocks perform better. Systematic risk is negatively significant in down markets. The proportion of floating equity has no direct effect on stock returns. JEL Classification: G14, G15  相似文献   

13.
This paper examines whether the cross-sectional variations in stock returns are better described by systematic risk factors or by firm characteristics such as book-to-market ratios and market capitalization. It provides new evidence from the Japanese stock market based on the recent sample period from 2002 to 2007, which is not addressed in the existing literature. Also, the new results are derived from the generalized method of moments applied to daily returns. The evidence suggests that both the firm size and book-to-market ratio are significantly related to average return premiums. There is mixed evidence, which tends to lend stronger support to the characteristic model rather than the Fama-French three-factor model as more reflective of the return dynamics in the Japanese stock market.  相似文献   

14.
This paper examines empirical contemporaneous and causal relationships between trading volume, stock returns and return volatility in China's four stock exchanges and across these markets. We find that trading volume does not Granger-cause stock market returns on each of the markets. As for the cross-market causal relationship in China's stock markets, there is evidence of a feedback relationship in returns between Shanghai A and Shenzhen B stocks, and between Shanghai B and Shenzhen B stocks. Shanghai B return helps predict the return of Shenzhen A stocks. Shanghai A volume Granger-causes return of Shenzhen B. Shenzhen B volume helps predict the return of Shanghai B stocks. This paper also investigates the causal relationship among these three variables between China's stock markets and the US stock market and between China and Hong Kong. We find that US return helps predict returns of Shanghai A and Shanghai B stocks. US and Hong Kong volumes do not Granger-cause either return or volatility in China's stock markets. In short, information contained in returns, volatility, and volume from financial markets in the US and Hong Kong has very weak predictive power for Chinese financial market variables.  相似文献   

15.
This paper examines “leverage” and volatility feedback effects at the firm level by considering both market and firm level effects, using 242 individual firm stock data in the US market. We adopt a panel vector autoregressive framework which allows us to control simultaneously for common business cycle effects, unobserved cross correlation effects in return and volatility via industry effects, and heterogeneity across firms. Our results suggest that volatility feedback effects at the firm level are present due to both market and firm effects, though the market volatility feedback effect is stronger than the corresponding firm level effect. We also find that the leverage effect at the firm level is persistent, significant and negative, while the effect of market return on firm volatility is persistent, significant and positive. The presence of these effects is further explored through the responses of the model's variables to market-wide return and volatility shocks.  相似文献   

16.
This paper shows that the probability of exercise of convertible bonds issued against a firm’s stock directly affects the liquidity of the stock itself. Using the ratio of absolute stock return to its dollar volume as a proxy for stock liquidity I demonstrate that there is a direct and positive relationship between conversion probability and stock liquidity while controlling for firm size, book to market equity value and firm beta. I describe the effect of unlisted convertible debt on the liquidity of listed firms in the US, Korea and Singapore. The effects of conversion probability on stock liquidity are less pronounced for smaller firms, which helps explain time series variations in the liquidity premiums for smaller firms over time. The relationship between convertibles and stock liquidity is mainly attributed to the expected increase in the number of shares available for trade upon conversion and the expected change in the capital structure of the firm.  相似文献   

17.
Size effect studies generally suggest that a return premium exists for small firms. While the size effect has mostly disappeared in recent years in mature markets (e.g., US and UK), it remains mostly strong in developing markets. The purpose of this paper is to examine the relationship between firm size and excess stock returns in the Chinese stock markets, and to examine this effect in both a bull and bear market. No studies have previously examined these relationships in the Chinese markets. The results of the study indicate that a size effect exists in the Chinese stock markets over the 6-year period from 1998 to 2003. We find small firms have significantly greater excess returns than large firms. Moreover, small firms are found to have a stronger reaction to the direction of the market than large firms. Small firms have significantly greater positive excess returns than large firms during the bull market. However, small firms have significantly greater negative returns (using total market value), or no significant difference in returns (using float market value) during the bear market period.  相似文献   

18.
Extreme trading activity contains valuable information about the future evolution of stock prices in the Chinese stock market. Over the next 30 trading days after the initial volume shocks, a high-low volume portfolio earns a net average cumulate return of 2.08% and a high-low volume and size portfolio earns 3.37%, suggesting that there exists a high-volume return premium and that Chinese investors favor high-volume small-size stocks. However, a volume momentum portfolio earns a −1.65% net average cumulative return, indicating that Chinese stocks exhibit a short-run reversal. Portfolio construction, market risk, and firm size do not seem to explain the results.  相似文献   

19.
Recent studies provide empirical evidence that family firms are outperforming their non-family counterparts in terms of stock market performance. For the Swiss stock market we find that family firms indeed outperform their non-family counterparts after controlling for firm size and beta. In addition, our data shows that family firms display more stable earnings per share in contrast to their non-family counterparts. Furthermore we find that the variance of earnings per share positively affects analyst forecast dispersion. According to anomaly literature, lower analyst forecast dispersion has been found to induce higher excess return, which our data supports for the Swiss stock market. By linking variance of earnings per share, analyst forecast dispersion and stock performance we provide an insightful explanation for the excess stock market returns of family firms. In addition, our text extends the theory of dispersion effect with an additional empirical element, the variance of earnings per share.   相似文献   

20.
According to the framework outlined in Peng and Xiong ( 2006 ), attention‐constrained investors tend to process more market‐ and sector‐level information. We empirically test this theory. We find that firms with higher media coverage have lower contemporaneous stock return synchronicity. Such an effect is robust to analyses within size deciles, inclusion of firm fixed effects, estimation using a matched sample, and a two‐stage least squares approach. The effect becomes less pronounced during the financial crisis period when both the quantity and quality of firm‐specific information decrease. Further, the attention from media coverage has a spillover effect on the firm's industry peers without media coverage. Finally, investors of firms with higher media coverage are more efficient in incorporating future firm performance into current stock prices. Collectively, our findings support the theory in Peng and Xiong ( 2006 ) that investors increase their acquisition of firm‐specific information when a firm captures their attention.  相似文献   

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