This paper studies the inference problem of an infinite‐dimensional parameter with a shape restriction. This parameter is identified by arbitrarily many unconditional moment equalities. The shape restriction leads to a convex restriction set. I propose a test of the shape restriction, which...

This working paper was written by Chao Gu (University of Missouri), Guido Menzio (New York University and NBER), Randall Wright (Zhejiang University, University of Wisconsin - Madison and NBER) and Yu Zhu (Bank of Canada).During the financial crisis, relatively centralized markets functioned...

We study economies where firms acquire capital in primary markets, then, after information on idiosyncratic productivity arrives, retrade it in secondary markets. Our secondary markets incorporate bilateral trade with search, bargaining and liquidity frictions. We distinguish between full or...

We review the nascent but fast-growing literature on central bank digital currencies (CBDCs), focusing on their potential impacts on private banks. We evaluate these impacts in three areas of traditional banking: payments, lending, and liquidity and maturity transformation. For each area, we...

This paper considers an economy where central-bank-issued fiat money competes with privately-issued e-money. We study a policy-setting game between the central bank and the e-money issuer and find (1) the optimal monetary policy of the central bank depends on the policy of the private issuer and...