Returns to scale from labor specialization: evidence from asset management mergers

We study human capital synergies in asset management mergers that stem from the improved ability to assign fund managers to more specialized tasks in larger firms. More specialized task assignment allows rotated managers to focus on their investment expertise and leads to incremental $54 million of value added per deal per year on average. The effects are concentrated in mergers that lead to a large increase in firm size and in funds whose management appears less specialized prior to the merger. Our results provide direct evidence on the role of firms in the assignment of tasks to fund managers. (JEL G23, J24, G34)Authors have furnished an Internet Appendix, which is available on the Oxford University Press Web site next to the link to the final published paper online.