European Business Schools Librarian's Group

Les Cahiers de Recherche,
HEC Paris

No 1134: The Excess Returns of 'Quality' Stocks: A Behavioral Anomaly

David Thesmar (), Jean-Philippe Bouchaud , Ciliberti Stefano , Augustin Landier and Guillaume Simon

Abstract: This note investigates the causes of the quality anomaly, which is one of the strongest and most scalable anomalies in equity markets. We explore two potential explanations. The "risk view", whereby investing in high quality firms is somehow riskier, so that the higher returns of a quality portfolio are a compensation for risk exposure. This view is consistent with the Efficient Market Hypothesis. The other view is the "behavioral view", which states that some investors persistently underestimate the true value of high quality firms. We find no evidence in favor of the "risk view": The returns from investing in quality firms are abnormally high on a risk-adjusted basis, and are not prone to crashes. We provide novel evidence in favor of the "behavioral view": In their forecasts of future prices, and while being overall overoptimistic, analysts systematically underestimate the future return of high quality firms, compared to low quality firms.

Keywords: Quality anomaly; financial analysts misplaced focus; behavioral biases

JEL-codes: G00; G14

11 pages, June 15, 2016

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