scholarly journals Data-Snooping Biases in Tests of Financial Asset Pricing Models

10.3386/w3001 ◽  
1989 ◽  
Author(s):  
Andrew Lo ◽  
A. Craig MacKinlay
2008 ◽  
Vol 43 (2) ◽  
pp. 331-353 ◽  
Author(s):  
Wayne E. Ferson ◽  
Sergei Sarkissian ◽  
Timothy Simin

AbstractThis paper studies the estimation of asset pricing model regressions with conditional alphas and betas, focusing on the joint effects of data snooping and spurious regression. We find that the regressions are reasonably well specified for conditional betas, even in settings where simple predictive regressions are severely biased. However, there are biases in estimates of the conditional alphas. When time-varying alphas are suppressed and only time-varying betas are considered, the betas become biased. Previous studies overstate the significance of time-varying alphas.


Author(s):  
Carlo A. Favero ◽  
Fulvio Ortu ◽  
Andrea Tamoni ◽  
Haoxi Yang

2013 ◽  
Author(s):  
Vladislav Vacek ◽  
Robert Gottfried Kuklik

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