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Event Day 0? After‐Hours Earnings Announcements

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  • HENK BERKMAN
  • CAMERON TRUONG

Abstract

In recent years, the proportion of after‐hours earnings announcements has increased to more than 40%. For after‐hours announcements, earnings‐related volume and price changes are not observed on the Compustat or I/B/E/S earnings announcement date, but one trading day later. This study demonstrates the importance of accounting for after‐hours announcements for event studies around earnings announcements.

Suggested Citation

  • Henk Berkman & Cameron Truong, 2009. "Event Day 0? After‐Hours Earnings Announcements," Journal of Accounting Research, Wiley Blackwell, vol. 47(1), pages 71-103, March.
    • Handle: RePEc:bla:joares:v:47:y:2009:i:1:p:71-103
    DOI: 10.1111/j.1475-679X.2008.00312.x
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    References listed on IDEAS

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