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Idiosyncratic volatility and the pricing of poorly-diversified portfolios

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  • Miffre, Joëlle
  • Brooks, Chris
  • Li, Xiafei

Abstract

This article examines the role of idiosyncratic volatility in explaining the cross-sectional variation of size- and value-sorted portfolio returns. We show that the premium for bearing idiosyncratic volatility varies inversely with the number of stocks included in the portfolios. This conclusion is robust within various multifactor models based on size, value, past performance, liquidity and total volatility and also holds within an ICAPM specification of the risk–return relationship. Our findings thus indicate that investors demand an additional return for bearing the idiosyncratic volatility of poorly-diversified portfolios.

Suggested Citation

  • Miffre, Joëlle & Brooks, Chris & Li, Xiafei, 2013. "Idiosyncratic volatility and the pricing of poorly-diversified portfolios," International Review of Financial Analysis, Elsevier, vol. 30(C), pages 78-85.
  • Handle: RePEc:eee:finana:v:30:y:2013:i:c:p:78-85 DOI: 10.1016/j.irfa.2013.05.007
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    Cited by:

    1. Berggrun, Luis & Lizarzaburu, Edmundo & Cardona, Emilio, 2016. "Idiosyncratic volatility and stock returns: Evidence from the MILA," Research in International Business and Finance, Elsevier, vol. 37(C), pages 422-434.
    2. Simlai, Prodosh, 2014. "Persistence of ex-ante volatility and the cross-section of stock returns," International Review of Financial Analysis, Elsevier, vol. 33(C), pages 253-261.

    More about this item

    Keywords

    Idiosyncratic volatility; Cross-sectional variation in stock returns; Diversification;

    JEL classification:

    • 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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