Supporting Information REFERENCES (2002). On the performance of mutual fund managers [Unpublished doctoral dissertation]. University of Pennsylvania. , , , & (2023). Competition for attention in the ETF space. Review of Financial Studies, 36, 987–1042. , & (2004). Mutual fund flows and performance in rational markets. Journal of Political Economy, 112, 1269–1295. , & (2015). A practitioner's guide to cluster robust inference. Journal of Human Resources, 50, 317–372. , , & (2020).