HOME | Definition of abnormal returns (ABNORMAL RETURNS, Abnormal returns)
The component of the return that is not due to systematic influences (market-wide influences). In other words, abnormal returns are above those ...
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In stock market trading, abnormal returns are the differences between a single stock or portfolio's performance in regard to the average market performance (usually a broad index s.a. the S&P 500 and EURO STOXX 50 or a natioal index like the Nikkei 225) over a set period of time. ...
http://en.wikipedia.org/wiki/Abnormal returns