Vocabulary Herfindahl Index (VocaHIn): Linguistic Dominance and Collective Effervescence in WallStreetBets

Ko Hayakawa, Yoichi Otsubo, Ser-Huang Poon, Siliang Wei

Research output: Working paper

Abstract

Analysis of over 150,000 WallStreetBets comments identifies dominant phrases during Collective Effervescence (CE), a state where individuals experience collective excitements and solidarity. With our proposed Vocabulary Herfindahl Index (VocaHIn), measuring the prevalence of specific phrases, we find an upsurge in stock returns volatility during CE.
Original languageEnglish
PublisherSocial Science Research Network
Publication statusUnpublished - 2024

Keywords

  • Vocabulary Herfindahl Index (VocaHIn)
  • Collective Effervescence
  • Retail Investors
  • Meme stocks

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