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Working Paper
Financial Intermediation and Aggregate Demand: A Sufficient Statistics Approach
We provide a unified framework to study how the financial sector affects the transmission of macroeconomic policies, such as monetary and fiscal policies, and asset purchase programs. Our framework nests models of financial intermediation with various microfoundations and allows for rich household heterogeneity. The financial sector supplies liquidity by issuing liquid assets to finance illiquid capital. The elasticities of liquidity supply with respect to returns are sufficient statistics that summarize how the financial sector determines responses to policy through asset markets. This asset ...
Working Paper
Asset supply and liquidity transformation in HANK
We study how the financial sector affects fiscal and monetary policy in heterogeneous agent New Keynesian (HANK) economies. We show that, in a large class of models of financial intermediation, relevant features of the financial sector are summarized by the elasticities of a liquid asset supply function. The financial sector in these models affects aggregate responses only through its ability to perform liquidity transformation (i.e., issue liquid assets to finance illiquid capital). If liquid asset supply responds inelastically to returns on capital (low cross-price elasticities), ...