University of Minnesota Ph.D. dissertation. December 2009. Major: Economics. Advisor: Fabrizio Perri. 1 computer file (PDF); v, 114 pages, appendices A-C.

Financial innovation has increased opportunities for diversification and lowered investment costs, but has not reduced the relative cost of active (informed) investment strategies compared with passive (less informed) strategies. What are the consequences? I have studied an economy with linear...