Research Project
Grant-in-Aid for Research Activity Start-up
This study find bullish investor sentiment and sentiment cascade lead to IPO puzzles: high initial return and low post-IPO stock returns. Pre-IPO investor sentiment is extracted from Yahoo! Japan message boards using text-mining technique and support vector machine. In adddition to that, The constrution of investoer network is based on reply message of poster on message boards.We find that excessive optimism and sentiment cascade lead to IPO puzzles.
All 2016 2015
All Journal Article (1 results) (of which Acknowledgement Compliant: 1 results) Presentation (5 results) (of which Invited: 1 results)
証券アナリストジャーナル
Volume: 53 Pages: 38-46