「Waseda Organizational and Financial Economics Seminar
Social Media Sentiment and Over-the-Counter Equity Returns 」※テーマと要旨が変更になりました。
日時 | 2025年7月7日(月)13:10~14:50 |
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開催方法 | ①対面 *11号館504教室にお越しください。 ②Zoom*お申込み完了の自動返信メールにて、参加用URLをお知らせいたします。 |
対象 | 学生・教職員・一般 |
講演者 | 渡辺 雅弘 氏 (Associate Professor, Alberta School of Business, University of Alberta) |
要旨 | This study examines the relation between social media sentiment and the pricing of over-the-counter stocks. We measure the sentiment of messages on the largest social network for investors, Stocktwits, using large language models. The online platform and the trading venue share retail investors as their clientele. Stock prices hike with positive sentiment and reverse afterwards, while they plummet upon negative sentiment with little subsequent reversal. The explanatory power of sentiment quantified by natural language processing is not subsumed by the binary classification of sentiment by investors themselves. These results have implications for the informativeness of messages and investors’ trading behavior. |
世話人 | 宮島 英昭 (早稲田大学商学学術院 教授) |
参加申し込み方法 | 参加はこちらからお申込みください。※7月3日(木)17:00締切 |
その他 | 早稲田大学商学部・産業経営研究所・谷川寧彦分科会 |