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abnormal return
The mean cumulative abnormal return from the date of first announcement of the proposal until final approval by stockholders is 11.20%.
      
The power of the test of no event effect is plotted against the alternative of an abnormal return of one percent for 1 to 200 securities.
      
The parameter AR, is the average daily abnormal return over the event period.
      
The negative abnormal return of the real-estate industry remains present in the international setting, though.
      
The predicted difference of one half of one percent is approximately 25 percent of the mean abnormal stock split abnormal return.
      
The post-ranking abnormal return disappears when funds are evaluated over longer periods.
      
The results illustrate that when the abnormal return is only 0.5 percent the power can be low.
      
The total abnormal return experienced by firms comprising each individual sample considered in the analysis was next calculated.
      
The selection criterion of a public firm confronting a crisis signal from the stock market was a strong negative abnormal return.
      
The second proxy is earnings surprises, measured as the absolute abnormal return around earnings announcement dates.
      
We use the market model to calculate the abnormal return.
      
When the abnormal return is small a larger sample size is necessary to achieve high power.
      
When a corporation announces that it will raise capital in external markets there is, on average, a negative abnormal return.
      
We describe abnormal return measurement in more detail in Section 3.1.
      
We find that the operating component is positively related to subsequent stock returns, consistent with both risk and abnormal return explanations.
      
We also find that this surge in volatility is accompanied by a positive abnormal return of stock prices.
      
 

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