Retail investor sentiment and return comovements

Alok Kumar, Charles M.C. Lee

Research output: Contribution to journalArticlepeer-review

569 Scopus citations


Using a database of more than 1.85 million retail investor transactions over 1991-1996, we show that these trades are systematically correlated - that is, individuals buy (or sell) stocks in concert. Moreover, consistent with noise trader models, we find that systematic retail trading explains return comovements for stocks with high retail concentration (i.e., small-cap, value, lower institutional ownership, and lower-priced stocks), especially if these stocks are also costly to arbitrage. Macroeconomic news and analyst earnings forecast revisions do not explain these results. Collectively, our findings support a role for investor sentiment in the formation of returns.

Original languageEnglish (US)
Pages (from-to)2451-2486
Number of pages36
JournalJournal of Finance
Issue number5
StatePublished - Oct 2006
Externally publishedYes

ASJC Scopus subject areas

  • Accounting
  • Finance
  • Economics and Econometrics


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