NBER Working Paper No. 19238
---- Acknowledgements ----
We are grateful for the comments of Chris Downing, Xavier Gabaix, Huston McCulloch, James Mauro, Mike Rierson, Bradley Yim, and seminar participants at New York University and the Wharton School at the University of Pennsylvania. All errors are our responsibility. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.