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Working Paper
Screening and adverse selection in frictional markets
Lester, Benjamin; Venkateswaran, Venky; Shourideh, Ali; Zetlin-Jones, Ariel (2016-03-10)
We incorporate a search-theoretic model of imperfect competition into an otherwise standard model of asymmetric information with unrestricted contracts. We develop a methodology that allows for a sharp analytical characterization of the unique equilibrium and then use this characterization to explore the interaction between adverse selection, screening, and imperfect competition. On the positive side, we show how the structure of equilibrium contracts?and, hence, the relationship between an agent?s type, the quantity he trades, and the corresponding price?is jointly determined by the severity ...
Working Papers , Paper 16-10

Working Paper
Self-confirming Price Dispersion in Monetary Economies
Rabinovich, Stanislav; Baughman, Garth (2018-07-10)
In a monetary economy, we show that price dispersion arises as an equilibrium outcome without the need for costly simultaneous search or any heterogeneity in preferences, production costs, or search technologies. A distribution of money holdings among buyers makes sellers indifferent across a set of posted prices, leading to a non-degenerate price distribution. This price distribution, in turn, makes buyers indifferent across a range of money balances, rationalizing the non-degenerate distribution of money holdings. We completely characterize the distribution of posted prices and money ...
Finance and Economics Discussion Series , Paper 2018-046

Working Paper
Asymmetric Information and the Death of ABS CDOs
Beltran, Daniel O.; Thomas, Charles P.; Cordell, Lawrence R. (2013)
A key feature of the 2007 financial crisis is that for many securities trading had ceased; where trading did occur, market prices were well below intrinsic values, especially for ABS CDOs. One explanation is that information had been asymmetric, with sellers having better information than buyers. We first show the information advantages sellers had over buyers in both the issuance of CDOs and, through vertical integration, performance of the CDO collateral that could well have disrupted trading after the onset of the crisis. Using a ?workhorse" model for pricing securities under asymmetric ...
International Finance Discussion Papers , Paper 1075

Working Paper
Are Supply Networks Efficiently Resilient?
Capponi, Agostino; Du, Chuan; Stiglitz, Joseph E. (2024-05-28)
We show that supply networks are inefficiently, and insufficiently, resilient. Upstream firms can expand their production capacity to hedge againstsupply and demand shocks. But the social benefits of such investments arenot internalized due to market power and market incompleteness. Upstreamfirms under-invest in capacity and resilience, passing-on the costs to downstreamfirms, and drive trade excessively towards the spot markets. There isa wedge between the market solution and a constrained optimal benchmark,which persists even without rare and large shocks. Policies designed to incentivize ...
Finance and Economics Discussion Series , Paper 2024-031

Working Paper
Large and Small Sellers: A Theory of Equilibrium Price Dispersion with Sequential Search
Menzio, Guido; Trachter, Nicholas (2014-03-15)
The paper studies equilibrium pricing in a product market for an indivisible good where buyers search for sellers. Buyers search sequentially for sellers but do not meet every seller with the same probability. Specifically, a fraction of the buyers' meetings lead to one particular large seller, while the remaining meetings lead to one of a continuum of small sellers. In this environment, the small sellers would like to set a price that makes the buyers indifferent between purchasing the good and searching for another seller. The large seller would like to price the small sellers out of the ...
Working Paper , Paper 14-8

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

Discussion Paper
The Origins of Market Power in DeFi
Azar, Pablo D.; Casillas, Adrian; Farboodi, Maryam (2025-04-21)
In our previous Liberty Street Economics post, we introduced the decentralized finance (DeFi) intermediation chain and explained how various players have emerged as key intermediaries in the Ethereum ecosystem. In this post, we summarize the empirical results in our new Staff Report that explains how the need for transaction privacy across the DeFi intermediation chain gives rise to intermediaries’ market power.
Liberty Street Economics , Paper 20250421

Report
Cournot Fire Sales
Eisenbach, Thomas M.; Phelan, Gregory (2018-02-01)
In standard Walrasian macro-finance models, pecuniary externalities due to fire sales lead to excessive borrowing and insufficient liquidity holdings. We investigate whether imperfect competition (Cournot) improves welfare through internalizing the externality and find that this is far from guaranteed. Cournot competition can overcorrect the inefficiently high borrowing in a standard model of levered real investment. In contrast, Cournot competition can exacerbate the inefficiently low liquidity in a standard model of financial portfolio choice. Implications for welfare and regulation are ...
Staff Reports , Paper 837

Working Paper
Capacity Choice, Monetary Trade, and the Cost of Inflation
Rabinovich, Stanislav; Baughman, Garth (2020-02-24)
Firms often make production decisions before meeting a buyer. We incorporate this often-overlooked fact into an otherwise standard monetary search model and show that it has important implications for the set of equilibria, efficiency, and the cost of inflation. Our model features a strategic complementarity between the buyers' ex ante choice of money balances and sellers' ex ante choice of productive capacity. When resale value of unsold inventories is high, sellers carry excess capacity and the equilibrium is unique. But, when resale value is low, there is a continuum of equilibria, all of ...
Finance and Economics Discussion Series , Paper 2020-019

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