Are Some Clients More Equal than Others? An Analysis of Asset Management Companies’ Execution Costs

Abstract

Previous research documents differences in trading desk skills across management companies that result in significant variation in execution costs. In this paper, we utilize links between management companies and their institutional clients to explore variation in execution costs within management companies. For a subset of management companies, we find that systematic differences in execution costs exist across clients; these differences are comparable to the variation documented across management companies and persist over time. Clients who receive lower execution costs reward management companies with an increase in dollar trading volume. We find no evidence that the results are driven by broker commissions or differences in trading practices. Given the economic significance of our findings and implications for institutional investors, this aspect of execution should be recognized regardless of the ultimate source of the differences.

Keywords: conflicts of interest, pension plans, delegated portfolio management, strategic performance allocation, price allocation, favoritism, subsidization

JEL Classification: G20, G23