Abstract
The rapid growth of US financial services coupled with rapid increases in wealth inequality have been focusing policy debate on the function of the financial sector and on its social desirability as a whole. I propose a heterogeneous agent model with asymmetric information and matching frictions that produces a tradeoff between finance and entrepreneurship. By becoming bankers, talented agents efficiently match investors with entrepreneurs but extract excessive informational rents due to contract incompleteness. Thus, the financial sector is inefficiently large in equilibrium, and this inefficiency increases with wealth inequality. The model explains the simultaneous growth of wealth inequality and finance in the US, and why more unequal countries have larger financial sectors.
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