Insider trading and corporate spinoffs

This paper studies insider trading to examine undervaluation as a motive behind corporate spinoffs. We show an unmistakable increase (decrease) in the number of insider purchases (sales) and net purchases (sales) in the four quarters prior to a spinoff announcement. In addition, relative to a benchm...

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Bibliographic Details
Main Authors: CHAROENWONG, Charlie, DING, Kuan Yong David, PAN, Jing
Format: text
Language:English
Published: Institutional Knowledge at Singapore Management University 2016
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Online Access:https://ink.library.smu.edu.sg/lkcsb_research/5984
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Institution: Singapore Management University
Language: English
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Summary:This paper studies insider trading to examine undervaluation as a motive behind corporate spinoffs. We show an unmistakable increase (decrease) in the number of insider purchases (sales) and net purchases (sales) in the four quarters prior to a spinoff announcement. In addition, relative to a benchmark period, insider selling is significantly lower, and their net purchases significantlyhigher,in the three quarters prior to a spinoff announcement compared to other periods. We find that announcement period excess returns for abnormal net insider purchases are significantly higher than excess returns for abnormal net insider sales. Moreover, only firms with abnormal net insider purchases exhibit significant improvement in theirlong-run market and operating performance after a spinoff. The results suggest that undervaluation is an important motive behind corporate spinoffs and that it is possible to identify the quality of a spinoff firm on the basis of insider trading behavior prior to its announcement.