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The Efficiency o f China’s Stock Market
indicates systematic underreaction of the stock prices in response to the
information. In contrast, different signs of the significant non-zero abnormal
returns on and after announcement date imply overraction. Where there is no
underreaction or overreaction, a significant and abnormal performance of stock
prices on the event announcement date is consistent with the hypothesis that stock
prices fully, instantly and correctly reflect the announced
Following the introduction of the chapter, Section 8.2 tests the reaction of
returns to the announcement of bonus iss ...