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Working Paper
Market Integration and Bank Risk-Taking
Dam, Kaniska; Sengupta, Rajdeep
(2020-12-30)
Using a workhorse model of bank competition and risk-taking, we show that increased competition from market integration affects bank risk-taking in ways beyond a simple increase in the number of competitor banks. Research has shown that increased competition in the form of an increase in the number of competitor banks can reduce risk-taking—the bank-competitor effect. Market integration not only increases the number of banks, but also the number of potential customers (depositors and borrowers) available to each bank. Increases in the potential customer base induces banks to behave more ...
Research Working Paper
, Paper RWP 20-21
Working Paper
Screening and Adverse Selection in Frictional Markets
Lester, Benjamin; Venkateswaran, Venky; Shourideh, Ali; Zetlin-Jones, Ariel
(2017-10-10)
We incorporate a search-theoretic model of imperfect competition into a standard model of asymmetric information with unrestricted contracts. We characterize the unique equilibrium, and use our characterization to explore the interaction between adverse selection, screening, and imperfect competition. We show that the relationship between an agent?s type, the quantity he trades, and the price he pays is jointly determined by the severity of adverse selection and the concentration of market power. Therefore, quantifying the effects of adverse selection requires controlling for market ...
Working Papers
, Paper 17-35
Working Paper
Interchange Fees in Payment Networks: Implications for Prices, Profits, and Welfare
Hunt, Robert M.; Serfes, Konstantinos; Zhang, Yin
(2025-06-04)
In a two-sided model of the payment card market, we introduce a specific form of elastic demand (constant elasticity), merchant market power, ad valorem fees, and cash as an alternative. We derive the “credit card tax,” consisting of an endogenously determined interchange fee and any rewards paid. We characterize how this tax influences prices, profits, and welfare. We also examine how these relationships vary under different assumptions about the elasticity of demand, merchant market power, and differentiation between cash and credit. Under the assumptions of our model, by endogenizing ...
Working Papers
, Paper 25-18
Working Paper
Oligopsonies over the Business Cycle
Pinheiro, Roberto; Monte, Daniel
(2020-02-27)
With a duopsony model, we show how the degree of labor market slack relates to earnings inequality and firm size distribution across local labor markets and the business cycle. In booms, due to the high aggregate productivity, there is fierce competition with resulting high wages and full employment. During recessions, there is labor market slack and firms enjoy local market power. In periods in which the economy is moving in or out of a recession, there is an “accommodation” phase, with firms shrinking their labor forces and paying lower wages instead of competing for poached workers. We ...
Working Papers
, Paper 20-06
Working Paper
Nonparametric Estimation of Lerner Indices for U.S. Banks Allowing for Inefficiency and Off-Balance Sheet Activities
Wheelock, David C.; Wilson, Paul W.
(2019-04-16)
The Lerner index is widely used to assess firms' market power. However, estimation and interpretation present several challenges, especially for banks, which tend to produce multiple outputs and operate with considerable inefficiency. We estimate Lerner indices for U.S. banks for 2001-18 using nonparametric estimators of the underlying cost and profit functions, controlling for inefficiency, and incorporating banks' off-balance-sheet activities. We find that mis-specification of cost or profit functional forms can seriously bias Lerner index estimates, as can failure to account for ...
Working Papers
, Paper 2019-12
Working Paper
New Estimates of the Lerner Index of Market Power for U.S. Banks
Wheelock, David C.; Wilson, Paul W.
(2020-02-19)
The Lerner index is widely used to assess firms' market power. However, estimation and interpretation present several challenges, especially for banks, which tend to produce multiple outputs and operate with considerable inefficiency. We estimate Lerner indices for U.S. banks for 2001-18 using nonparametric estimators of the underlying cost and profit functions, controlling for inefficiency, and incorporating banks' off-balance-sheet activities. We find that mis-specification of cost or profit functional forms can seriously bias Lerner index estimates, as can failure to account for ...
Working Papers
, Paper 2019-012
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