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

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

*Corresponding author for this work

Research output: Preprint/Working paperPreprint

Abstract

Our analysis of more than 150,000 WallStreetBets comments reveals dominant phrases when members of the community experience collective excitement and solidarity (Collective Effervescence). Using the novel Vocabulary Herfindahl Index (VocaHIn), we find that stock returns volatility increases after CE, and vice versa.
Original languageEnglish
PublisherElsevier BV
Publication statusUnpublished - 2024

Keywords

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

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