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Working Paper
Capital Buffers in a Quantitative Model of Banking Industry Dynamics
We develop a model of banking industry dynamics to study the quantitative impact of regulatory policies on bank risk taking and market structure. Since our model is matched to U.S. data, we propose a market structure where big banks with market power interact with small, competitive fringe banks as well as non-bank lenders. Banks face idiosyncratic funding shocks in addition to aggregate shocks which affect the fraction of performing loans in their portfolio. A nontrivial bank size distribution arises out of endogenous entry and exit, as well as banks' buffer stock of capital. We show the ...
Working Paper
Market Concentration in Fintech
This paper discusses concentration in consumer credit markets with a focus on fintech lenders and residential mortgages. We present evidence that shows that concentration among fintech lenders is significantly higher than that for bank lenders and other nonbank lenders. The data also show that the overall concentration in mortgage lending has declined between 2011 and 2019, driven mostly by a reduction in concentration among bank lenders. We present a simple model to show that changes in lender financial technology (interpreted as improvements in quality of loan services) explain more than ...
Working Paper
A quantitative theory of unsecured consumer credit with risk of default
The authors study, theoretically and quantitatively, the general equilibrium of an economy in which households smooth consumption by means of both a riskless asset and unsecured loans with the option to default. The default option resembles a bankruptcy filing under Chapter 7 of the U.S. Bankruptcy Code. Competitive financial intermediaries offer a menu of loan sizes and interest rates wherein each loan makes zero profits. They prove the existence of a steady-state equilibrium and characterize the circumstances under which a household defaults on its loans. They show that their model accounts ...
Working Paper
A welfare comparison of pre- and post-WWII business cycles: some implications for the role of postwar macroeconomic policies
The authors compute the potential economic benefits that would accrue to a typical pre-WWII era U.S. worker from the post-WWII macroeconomic policy regime. The authors assume that workers face undiversifiable income risk but can self-insure by saving in nominal assets. The worker's average utility is computed for two eras: pre-WWII (1875-1941) and post-WWII. In the pre-WWII era, the worker endured business cycles that were large in amplitude and quite volatile, a procyclical aggregate price level with large cyclical amplitude, a high average unemployment rate, and virtually no trend in the ...
Working Paper
A New Perspective on the Finance-Development Nexus
The existing literature on financial development focuses mostly on the causal impact of the quantity of financial intermediation on economic development. This paper, instead, focuses on the role of the financial sector in creating securities that cater to the needs of heterogeneous investors. To that end, we describe a dynamic extension of Allen and Gale (1989)?s optimal security design model in which producers can tranche the stochastic cash flows they generate at a cost. Lower tranching costs in that environment lead to capital deepening and raise aggregate output. The implications of lower ...
Working Paper
Equilibrium Evictions
We develop a simple equilibrium model of rental markets for housing in which eviction occurs endogenously. Both landlords and renters lack commitment; a landlord evicts a delinquent tenant if they do not expect total future rent payments to cover costs, while tenants cannot commit to paying more rent than they would be able or willing to pay given their outside option of searching for a new house. Renters who are persistently delinquent are more likely to be evicted and pay more per quality-adjusted unit of housing than renters who are less likely to be delinquent. Evictions are never ...
Working Paper
Capital Buffers in a Quantitative Model of Banking Industry Dynamics
We develop a model of banking industry dynamics to study the quantitative impact of regulatory policies on bank risk taking and market structure as well as the feedback effect of market structure on the efficacy of policy. Since our model is matched to U.S. data, we propose a market structure where big banks with market power interact with small, competitive fringe banks. Banks face idiosyncratic funding shocks in addition to aggregate shocks which affect the fraction of performing loans in their portfolio. A nontrivial bank size distribution arises out of endogenous entry and exit, as well ...
Working Paper
REORGANIZATION OR LIQUIDATION: BANKRUPTCY CHOICE AND FIRM DYNAMICS
In this paper, we ask how bankruptcy law affects the financial decisions of corporations and its implications for firm dynamics. According to current U.S. law, firms have two bankruptcy options: Chapter 7 liquidation and Chapter 11 reorganization. Using Compustat data, we first document capital structure and investment decisions of non-bankrupt, Chapter 11, and Chapter 7 firms. Using those data moments, we then estimate parameters of a firm dynamics model with endogenous entry and exit to include both bankruptcy options in a general equilibrium environment. Finally, we evaluate a bankruptcy ...
Working Paper
Valuation equilibria with transactions costs
Working Paper
On the welfare gains of eliminating a small likelihood of economic crises: A case for stabilization policies?
In this paper the authors estimate the potential benefit of policies that eliminate a small likelihood of economic crises. They define an economic crisis as a Depression-style collapse of economic activity. For the U.S., based on the observed frequency of Depression-like events, the authors estimate the likelihood of encountering a depression to be about once every 83 years. Even for this small probability of moving into a Depression-like state, the welfare gain from setting it to zero can range between 1 and 7 percent of annual consumption, in perpetuity. These estimates are large in ...