social media

Wisdom or Whims? Investor Opinions, Trading Strategies, and Market Outcomes

We investigate the trading strategies of retail investors by applying LLMs to analyze messages posted by users on StockTwits.

What Does ChatGPT Make of Historical Stock Returns? Extrapolation and Miscalibration in LLM Stock Return Forecasts

Revise and Resubmit at Management Science

Do Smartphones Transform Information Transmission in Financial Markets? Evidence from StockTwits

Tweets posted via smartphones predict next-day returns and news, suggesting smartphones facilitate rapid access to information.