On the Anomalous Stock Price Response to Management Earnings Forecasts
University of Illinois at Chicago
University of Missouri at Columbia
Northern Illinois University
November 1, 2011
This paper examines stock price formation subsequent to management forecasts of quarterly earnings. In the post-announcement period, we find a significant upward price drift for both good news forecasts and bad news forecasts. The asymmetry in the initial market response and the subsequent upward drift in stock prices are consistent with a reversal of an initial overreaction to managers’ bad news forecasts and a continuation of an initial underreaction to managers’ good news forecasts. This interpretation is supported by a negative (positive) relationship between the initial market response and the post-guidance drift in the bad news (good news) group. The drift pattern is robust to issues arising from measurement. Trading strategies exploiting the post-announcement drift suggest the existence of economically significant trading profits, net of estimated trading costs.
Number of Pages in PDF File: 45
Keywords: Management forecasts, earnings guidance, stock price drift, overreaction, underreaction
JEL Classification: G14, G30, M41
Date posted: November 29, 2011
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