The Specter of the Giant Three
---- Acknowledgments ----
This paper was prepared for publication in the 2019 Boston University Law Review symposium on institutional investors. We would like to thank Aaron Haefner, Matt Stadnicki, and Zoe Piel for valuable research assistance. We also gratefully acknowledge financial support from Harvard Law School and the Boston University School of Law. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.