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    Cumulative Abnormal Returns Tag

    Cumulative Abnormal Returns Several celebrated investors and stock pickers frequently mentioned in the financial press have recorded huge returns on their investments over the past two decades.  Does the success of these particular investors invalid tae the EMH?  Explain. Delta, United, and American Airlines announced purchases of planes on July 18 (7/18), February 12 (2/12), and October 7 (10/7), respectively. Given the