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

Nishad Kapadia, Matthew Linn and Bradley Paye

Journal of Financial and Quantitative Analysis, 2024, vol. 59, issue 3, 1185-1212

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.

Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:cup:jfinqa:v:59:y:2024:i:3:p:1185-1212_8

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