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CAPM and the changing distribution of historical returns


  • Chandana Shahi
  • Sherrill Shaffer


Three statistical tests reject the capital asset pricing model (CAPM) assumption of a constant distribution of returns over time, for three different aggregate stock indices over various holding periods since 1950. These findings further undermine the reliability of CAPM applied to historical data for choosing optimal portfolio allocations.

Suggested Citation

  • Chandana Shahi & Sherrill Shaffer, 2017. "CAPM and the changing distribution of historical returns," Applied Economics Letters, Taylor & Francis Journals, vol. 24(9), pages 639-642, May.
  • Handle: RePEc:taf:apeclt:v:24:y:2017:i:9:p:639-642
    DOI: 10.1080/13504851.2016.1217304

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