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Does Academic Research Destroy Stock Return Predictability?
The Journal of finance (New York), 2016-02, Vol.71 (1), p.5-32
[Peer Reviewed Journal]
2016 American Finance Association ;2015 the American Finance Association ;ISSN: 0022-1082 ;EISSN: 1540-6261 ;DOI: 10.1111/jofi.12365
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Title:
Does Academic Research Destroy Stock Return Predictability?
Author:
MCLEAN, R. DAVID
;
PONTIFF, JEFFREY
Subjects:
Arbitrage
;
Financial portfolios
;
Idiosyncratic risk
;
Investors
;
Price momentum
;
Prices
;
Statistical bias
;
Statistical significance
;
Stock prices
;
Stock shares
Is Part Of:
The Journal of finance (New York), 2016-02, Vol.71 (1), p.5-32
Description:
We study the out-of-sample and post-publication return predictability of 97 variables shown to predict cross-sectional stock returns. Portfolio returns are 26% lower out-of-sample and 58% lower post-publication. The out-of-sample decline is an upper bound estimate of data mining effects. We estimate a 32% (58%-26%) lower return from publication-informed trading. Post-publication declines are greater for predictors with higher in-sample returns, and returns are higher for portfolios concentrated in stocks with high idiosyncratic risk and low liquidity. Predictor portfolios exhibit post-publication increases in correlations with other published-predictor portfolios. Our findings suggest that investors learn about mispricing from academic publications.
Publisher:
Blackwell Publishing Ltd
Language:
English
Identifier:
ISSN: 0022-1082
EISSN: 1540-6261
DOI: 10.1111/jofi.12365
Source:
Alma/SFX Local Collection
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