Place Your Bets? The Value of Investment Research on Reddit’s Wallstreetbets

Abstract

We examine the value of due diligence recommendations on Reddit’s Wallstreetbets ( WSB ) platform. Before the Gamestop (GME) short squeeze, recommendations are significant predictors of returns and cash-flow news. This predictability is eliminated post-GME. Post-GME, the fraction of reports emphasizing price-pressure or attention-grabbing stocks dramatically increases, and the decline in informativeness is concentrated in these reports. Similarly, retail trade informativeness is particularly strong following DD reports in the pre-GME period, but not post-GME. Our findings are consistent with the view that the Gamestop event altered the culture of WSB , leading to a deterioration in investment quality that adversely affected smaller investors.