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Bank Market Power and the Risk Channel of Monetary Policy
This paper investigates the risk channel of monetary policy through banks' lending standards. We modify the classic costly state verification (CSV) problem by introducing a risk-neutral monopolistic bank, which maximizes profits subject to borrower participation. While the bank can diversify idiosyncratic default risk, it bears the aggregate risk. We show that, in partial equilibrium, the bank prefers a higher leverage ratio of borrowers, when the profitability of lending increases, e.g. after a monetary expansion. This risk channel persists when we embed our contract in a standard New ...