Do Stock Price Reactions to Public Information Reflect its Long-run Effect on the Firms’ Fundamental Value? The Case of an Emerging Market

Hyeonmi Ahn and Doyeon Kim

Global Economic Review, 2018, vol. 47, issue 2, 182-223

Abstract: This paper examines the relationship between the cumulative abnormal returns (CARs) induced by various events and long-term operating performances in the post-event period. We gather six events from KRX Disclosure System over 2000–2011 and then ascertain the different CAR patterns. While most of other studies have focused on a single type of events, we deal with various types of events. Based on the general valuation model, stock return or price should reflect the firm’s fundamental value and we expect CARs to show a close relationship with the firm’s fundamental value over a long horizon. However, no distinct relationship between CARs and operating performances is found. The stock price reactions which are temporary and unrelated to the firm’s fundamental values may be explained by market inefficiency in Korea.

Date: 2018
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DOI: 10.1080/1226508X.2018.1424011

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