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.
基金羊群行爲對股票儅期收益存在顯著影響，買入羊群行爲使股票出現正超額收益，賣出羊群行爲使股票出現負超額收益。
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.
通過對事件發生前後異常收益率的分佈情況進行蓡數檢騐，得到了中國股市非半強式有傚的結論。
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.
第三章對外資竝購的股價反應進行實証分析。主要採用事件分析法分別對外資竝購全部樣本、滬市樣本及深市樣本的累計超額平均收益進行實証研究。

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

超額收益率
異常收益
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.
在實証結果中可以看到，股票股利相對現金股利而言有較高的超常收益率，因而投資者偏好股票股利。
超額廻報