Model scan of factors in U.K. stock returns

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We use the Bayesian model scan approach of Chib, S., X. Zeng, and L. Zhao. 2020. ‘On Comparing Asset Pricing Models.’ The Journal of Finance 75 (1): 551–577., and Chib, S., L. Zhao, and G. Zhou. 2023. ‘Winners from Winners: A Tale of Risk Factors.’ Management Science to examine which are the best performing models in a set of 12 candidate factors in U.K. stock returns. We find that a five-factor model has the highest posterior probability across the whole sample period but the posterior probability is low. The best factor model outperforms traditional factor models using a number of metrics. However the best model performs poorly in pricing a set of anomaly portfolios.
Original languageEnglish
Pages (from-to)1-14
Number of pages14
JournalEuropean Journal of Finance
Early online date6 Feb 2024
Publication statusE-pub ahead of print - 6 Feb 2024


  • Bayesian model
  • stock returns
  • UK


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