期刊
JOURNAL OF INTERNATIONAL MONEY AND FINANCE
卷 111, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jimonfin.2020.102318
关键词
Beta; Herding; Overconfidence; Low-beta anomaly
This study investigates asset returns using the concept of beta herding, finding that overconfidence leads to beta herding and under-confidence results in adverse beta herding. The low-beta anomaly can be explained by a return reversal following adverse beta herding.
We investigate asset returns using the concept of beta herding, which measures cross-sectional variations in betas due to changes in investors' confidence about their market outlook. Overconfidence causes beta herding (compression of betas towards the market beta), while under-confidence leads to adverse beta herding (dispersion of betas from the market beta). We show that the low-beta anomaly can be explained by a return reversal following adverse beta herding, as high beta stocks underperform low beta stocks exclusively following periods of adverse beta herding. This result is robust to investors' preferences for lottery-like assets, sentiment, and return reversals, and beta herding leads time variation in betas. (C) 2020 Elsevier Ltd. All rights reserved.
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