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John H. Boyd is the Kappel Chair in Business and Government, Carlson School of Management, University of Minnesota. He is also a consultant at the Federal Reserve Bank of Minneapolis. He can be contacted.
Ravi Jagannathan is Chicago Mercantile Exchange Distinguished Professor of Finance at the Kellogg Graduate School of Management, Northwestern University. He is also a Research Associate at National Bureau of Economic Research. He can be contacted.
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