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Valuation Effects Of Earnings Restatements Due To Accounting Irregularities, Tan Xu

Theses and Dissertations in Business Administration

This dissertation studies three financial topics using earnings restatement data. In the first topic, we discriminate between the market efficiency hypothesis and the underreaction hypothesis by examining their predictions on the stock performance of restating firms in the post-announcement period. Three approaches are used, namely, the cumulative abnormal return (CAR), buy-and-hold abnormal return (BHAR), and calendar time portfolio approaches. Consistent with the market efficiency hypothesis, we do not find significant abnormal performance in the post-restatement period. In the second topic, we test the extrapolation model (LSV, 1994) by examining the relationship between stock price reaction to earnings restatement and the …