Autoencoder Asset Pricing Models and Economic Restrictions - International Evidence

Lenka Nechvátalová

No 2024/26, Working Papers IES from Charles University Prague, Faculty of Social Sciences, Institute of Economic Studies

Abstract: We evaluate the performance of the Conditional Autoencoder (CAE) model by Gu et al. (2021) in an international context and under economic constraints, such as the exclusion of microcap and illiquid firms, and accounting for transaction costs. The CAE model leverages latent factors and factor exposures dependent on asset characteristics, modelled as a flexible nonlinear function while adhering to the noarbitrage condition. The original study showed significant reductions in out-ofsample pricing errors from both statistical and economic perspectives in the U.S. context. We replicate these results on the U.S. dataset and extend the analysis to international data with a different set of firm characteristics, achieving consistent outcomes that demonstrate the model’s robustness. However, the economic benefits after accounting for transaction costs are limited, even after the exclusion of illiquid firms, highlighting the importance of considering these constraints.

Keywords: Machine learning; asset pricing; economic restrictions; anomalies (search for similar items in EconPapers)
JEL-codes: C55 G11 G12 G15 (search for similar items in EconPapers)
Pages: 22 pages
Date: 2024-08, Revised 2024-08
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