SILIANG (Wyatt) WEI

SILIANG (Wyatt) WEI

he/his

PhD candidate in Finance at AMBS (Empirical Asset Pricing, ESG, Machine Learning, Natural Language Processing, Behavioural Finance)

Vocabulary Herfindahl Index (Vocahin): Linguistic dominance and collective effervescence in WallStreetBets

(With Ko Hayakawa, Yoichi Otsubo and Ser-Huang Poon in Economics Letters, Volume 244, November 2024, 112027)

  • Abstract: Our analysis of over 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.