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Journal of Financial Markets Vol. 71 2024

Robinhood, Reddit, and the news: The impact of traditional and social media on retail investor trading

Markus Münster1; Felix Reichenbach1; Martin Walther2

1 Technische Universität Berlin · 2 German International University in Berlin, Chair of Financial Markets, Investment, and Banking, Am Borsigturm 162, 13507 Germany

open access

Abstract

We study the impact of social media posts and news articles on retail trading on Robinhood by analyzing the net buying activity before and after a (social) media publication. Our findings indicate that both publication types lead to an increase of holders. However, both effects are short-lived, and the effect of social media posts on retail trading is significantly higher. Furthermore, investors buy stocks that are recommended on Reddit regardless of text sentiment. However, they act as contrarians by selling stocks with positive news coverage and vice versa. We thus find evidence for both attention- and information-driven trading behavior.

DOI
10.1016/j.finmar.2024.100929
Volume
71
Pages
100929
Language
en
Sources
crossref openalex

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