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One Vol to Rule Them All: Common Volatility Dynamics in Factor Returns

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  • Kapadia, Nishad
  • Linn, Matthew
  • Paye, Bradley

Abstract

We show that a common component governs volatility dynamics across a wide range of traded equity factors. This “common factor volatility” (CFV) exists even among orthogonal factors. CFV occurs in both cash-flow and discount-rate components of factor returns and derives from market responses to fundamental news rather than underlying commonality in news volatility. Incorporating CFV improves factor volatility forecasts relative to models that include only own-factor volatility. CFV allows us to characterize stochastic discount factor (SDF) volatility dynamics in a very general sense and we show that many popular models imply SDFs with time-varying volatility that correlates strongly with CFV.

Suggested Citation

  • Kapadia, Nishad & Linn, Matthew & Paye, Bradley, 2024. "One Vol to Rule Them All: Common Volatility Dynamics in Factor Returns," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 59(3), pages 1185-1212, May.
    • Handle: RePEc:cup:jfinqa:v:59:y:2024:i:3:p:1185-1212_8
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