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Documenting the Post-2000 Decline in the Idiosyncratic Volatility Effect

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  • Chaehyun Pyun

Abstract

My paper investigates in which periods the idiosyncratic volatility anomaly is observable, and the trend in recent years. It uses a graphical methodology that allows the reader to assess the effects of different starting and ending months. Plots for the value-weighted portfolio show that near the end of the sample period, the Ang et al. (2006) anomaly either attenuates or disappears. Consistent with Bali and Cakici (2008), the effect is weaker and insignificant for the equal-weighted portfolio. Using 5F and 6F benchmark return models shows similar results that differ quantitatively, but not qualitatively.

Suggested Citation

  • Chaehyun Pyun, 2021. "Documenting the Post-2000 Decline in the Idiosyncratic Volatility Effect," Critical Finance Review, now publishers, vol. 10(3), pages 419-427, August.
    • Handle: RePEc:now:jnlcfr:104.00000095
    DOI: 10.1561/104.00000095
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    Cited by:

    1. Joshua Traut, 2023. "What we know about the low-risk anomaly: a literature review," Financial Markets and Portfolio Management, Springer;Swiss Society for Financial Market Research, vol. 37(3), pages 297-324, September.

    More about this item

    Keywords

    Idiosyncratic volatility; Factor models; Graphical diagnostic;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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