NBER Working Paper No. 18759
---- Acknowledgments ----
We have benefited from research assistance by Tao Jin and from comments by John Campbell, Xavier Gabaix, Ian Martin, Jose Ursúa, and Adrien Verdelhan. We appreciate help with data from Chen Di, Kai Guo, Mark Harrison, Elena Osokina, and Dwight Perkins. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.