Thesis: Ph. D., Massachusetts Institute of Technology, Sloan School of Management, 2015.Cataloged from PDF version of thesis.Includes bibliographical references (pages 157-163).This thesis consists of three essays in corporate finance and capital markets. The first chapter estimates the effect of competition from low-cost index funds on fees in the money management industry. A difference-in-differences analysis exploiting the staggered entry of index funds finds that while actively managed funds sold directly to retail investors reduce fees by six percent, those sold through brokers increase fees by four percent. Additionally, actively managed funds, especially closet indexers, shift away from holding the index portfolio. The paper proposes...