Effects of the pre-repurchase systematic risk on the relationship between investor behavior, market factors and the stock price responses

    Ying-Sing Liu Affiliation


This study explores the pre-repurchase systematic risk will affect the abnormal returns in the open-market repurchase event period and also change the relationship between the investor sentiment, trading activity, market factors and stock price response during the event on Taiwan stock market. Based on threshold regression models, it is found that the pre-repurchase systematic risk will significantly change the relationship between investor behavior, market factors and stock price responses and the asymmetry of the relationship exists when pre-repurchase systematic risk is lower than a repartition, which supports that institutional investors and credit trading investors differ in these existing relationships. When the pre-repurchase beta is below repartition, it will be detrimental to the returns in event period. But on the contrary, the returns in the short-term shock of news exposure period present the favorable results, which may be related to the fact that there exists sentiment premium in short-term when credit trading investors’ repurchase news exposure occurs. Finally, the study is to confirm the effect of systematic risk for returns and investor sentiment, these results have not been further explored in the past, and can be used as the firm’s evalu-ation reference to the repurchase program in the future.

Keyword : the open-market share repurchases, investor sentiment, stock price responses, the pre-repurchase beta, asymmetry of the relationship, the threshold regression model

How to Cite
Liu, Y.-S. (2018). Effects of the pre-repurchase systematic risk on the relationship between investor behavior, market factors and the stock price responses. Journal of Business Economics and Management, 19(4), 673-691.
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Dec 13, 2018
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