abnormal return

基本解释

Herd behavior has an impact on present stock return, buy-herding behavior lead to the positive abnormal return, and sell-herding behavior results negative abnormal return.
基金羊群行为对股票当期收益存在显著影响，买入羊群行为使股票出现正超额收益，卖出羊群行为使股票出现负超额收益。
By doing parametric test of the distribution of abnormal return, the paper demonstrate that the semi-strong form of the EMH does not hold in China stock market.
通过对事件发生前后异常收益率的分布情况进行参数检验，得到了中国股市非半强式有效的结论。
The Event-study Methodology is adapted to make analysis on Cumulative Average Abnormal Return (CAR) of all samples, of samples in Shanghai market and of samples in Shenzhen market respectively.
第三章对外资并购的股价反应进行实证分析。主要采用事件分析法分别对外资并购全部样本、沪市样本及深市样本的累计超额平均收益进行实证研究。

Likewise, investors significantly punished companies for eco-harmful events with a corresponding abnormal return of -.65%.
FORBES: CSR Pays for Itself: Here's the Evidence
Specifically, the impact of eco-harmful events has gone from an abnormal return of -.42% in the 1980s to -.66% in the 1990s and as high as -1.12% in the 2000s.
FORBES: CSR Pays for Itself: Here's the Evidence

超额收益率
异常收益
超常收益
Apparently stock dividends own a higher percentage of abnormal return. As a result, investors prefer stock dividend rather than the others.
在实证结果中可以看到，股票股利相对现金股利而言有较高的超常收益率，因而投资者偏好股票股利。
超额回报