Saki Bigio

Department of Economics
University of California at Los Angeles
8283 Bunche Hall
Box 951477
Los Angeles, CA 90095-1477
Tel: 917/455-6610

E-Mail: EmailAddress: hidden: you can email any NBER-related person as first underscore last at nber dot org
NBER Program Affiliations: EFG
NBER Affiliation: Faculty Research Fellow
Institutional Affiliation: University of California at Los Angeles

NBER Working Papers and Publications

December 2019Financial Risk Capacity
with Adrien d'Avernas: w26561
Financial crises are particularly severe and lengthy when banks fail to recapitalize after bearing large losses. We present a model that explains the slow recovery of bank capital and economic activity. Banks provide intermediation in markets with information asymmetries. Large equity losses force banks to tighten intermediation, which exacerbates adverse selection. Adverse selection lowers bank profit margins which slows both the internal growth of equity and equity injections. This mechanism generates financial crises characterized by persistent low growth. The lack of equity injections during crises is a coordination failure that is solved when the decision to recapitalize banks is centralized.
May 2019A Framework for Debt-Maturity Management
with Galo Nuño, Juan Passadore: w25808
We characterize the optimal debt-maturity management problem of a government in a small open economy. The government issues a continuum of finite-maturity bonds in the presence of liquidity frictions. We find that the solution can be decentralized: the optimal issuance of a bond of a given maturity is proportional to the difference between its market price and its domestic valuation, the latter defined as the price computed using the government’s discount factor. We show how the steady-state debt distribution decreases with maturity. These results hold when extending the model to incorporate aggregate risk or strategic default.
April 2016Distortions in Production Networks
with Jennifer La’O: w22212
How does an economy's production structure determine its macroeconomic response to sectoral distortions? We study a static framework in which production is organized in an input-output network and firms' production decisions are distorted. We show how sectoral distortions manifest at the aggregate level via two channels: total factor productivity and the labor wedge. The strength of each channel depends jointly on the input-output structure and the distribution of shocks. Near efficiency, distortions generate zero first-order effects on TFP but non-zero first-order effects on the labor wedge; the latter we show to be determined by the sector's network "centrality." We apply the model to the 2008-09 Financial Crisis and find that the U.S. input-ouput network may have amplified financial dis...
September 2014Banks, Liquidity Management and Monetary Policy
with Javier Bianchi: w20490
We develop a new tractable model of banks' liquidity management and the credit channel of monetary policy. Banks finance loans by issuing demand deposits. Because loans are illiquid, deposit transfers across banks must be settled with reserves. Deposit withdrawals are random, and banks manage liquidity risk by holding a precautionary buffer of reserves. We show how different shocks affect the banking system by altering the trade-off between profiting from lending and incurring greater liquidity risk. Through various tools, monetary policy affects the real economy by altering that trade-off. In a quantitative application, we study the driving forces behind the decline in lending and liquidity hoarding by banks during the 2008 financial crisis. Our analysis underscores the importance of disr...
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