All asset pricing studies on anomalies are just data-mining
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you just dont get - do you? Now get back to your first year coursework or your undergrad studies.
Your links are about the same as is this one:
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Not another one.... Didn't Cam Harvey shut them all up with his work?..... How many more papers about this will come out?
All the big guys in the field need to write a paper "discovering" that all cross-sectional AP is garbage. Then we can move on and do something useful.
... like showing the effect of the tinder activity of the CEO's daughter on dividend policy.