Cremers, Martijn; Petajisto, Antti; Zitzewitz, Eric - School of Management, Yale University - 2008
Standard Fama-French and Carhart models produce economically and statistically significant nonzero alphas even for passive benchmark indices such as the S&P 500 and Russell 2000. We find that these alphas primarily arise from the disproportionate weight the Fama-French factors place on small...