We give a simple explicit formula for turnover reduction when a large number of alphas are traded on the same execution platform and trades are crossed internally. We model turnover reduction via alpha correlations. Then, for a large number of alphas, turnover reduction is related to the largest...

This comparison of expected versus realized turnover in institutional equity portfolios reveals that 65%of portfolios turn over more than expected, some by large amounts.Manager interviews indicated they were aware that excessive turnover was potentially harmful to their clients. They cited...

"The non-tradability of human capital is often cited for the failure of traditional asset pricing theory to explain agents' portfolio holdings. In this paper we argue that the opposite might be true --- traditional models might not be able to explain agent portfolio holdings because they do not...