Publications

July 1981
Article

On Market Timing and Investment Performance Part I: An Equilibrium Theory of Value for Market Forecasts

By: Robert C. Merton

Keywords: Investment; Performance; Theory; Value; Forecasting and Prediction; Markets

2020
Working Paper

The Cost of Banking Deserts: Racial Disparities in Access to PPP Lenders and their Equilibrium Implications

By: Jeffrey Wang and David Hao Zhang

Many government support programs for small businesses are designed to pass through banks and credit unions. However, this poses barriers for minority communities that are less connected to financial institutions for obtaining this support. Using the latest program for... View Details

Keywords: Banking Deserts; Minority Communities; Paycheck Protection Program; Banks and Banking; Small Business; Demographics; Race; Government and Politics; Programs

Article

Multilateral Matching

By: John William Hatfield and Scott Duke Kominers

We introduce a matching model in which agents engage in joint ventures via multilateral contracts. This approach allows us to consider production complementarities previously outside the scope of matching theory. We show analogues of the first and second welfare... View Details

Keywords: Matching; Stability; Competitive Equilibrium; Core; Networks; Competition; Joint Ventures; Balance and Stability; Groups and Teams; Entrepreneurship

Purchase

Article

Physician-Induced Demand for Medical Care

By: Jerry R. Green

This paper addresses the theoretical models designed to ascertain the existence of a variable level of physicians' activity in shifting the demand of their patients. Two basic approaches are followed: equilibrium models of the demand for health care, and disequilibrium... View Details

Keywords: Physicians; Economic Equilibrium; Monopolistic Competition; Economic Competition; Medical Care

November 2019
Other Article

Corrigendum to "Multilateral Matching"

By: Keisuke Bando, Toshiyuki Hirai, John William Hatfield and Scott Duke Kominers

We identify an error in the claim by Hatfield and Kominers (2015) that every stable outcome in the setting of multilateral matching with contracts is efficient. We then show that the result can be recovered under a suitable differentiability condition. View Details

Keywords: Matching; Stability; Competitive Equilibrium; Networks; Joint Ventures; Balance and Stability

October 2003
Article

Capture by Threat

By: Ernesto Dal Bo and Rafael Di Tella

We analyze a simple stochastic environment in which policy makers can be threatened by “nasty” interest groups. In the absence of these groups, the policy maker’s desire for reelection guarantees that good policies are implemented for every realization of the shock.... View Details

Keywords: Political Parties; Politicians; Nash Equilibrium; Political Elections

1970
Working Paper

A Dynamic General Equilibrium Model of the Asset Market and Its Application to the Pricing of the Capital Structure of the Firm

By: Robert C. Merton

July 2014
Article

Convergence of Position Auctions under Myopic Best-Response Dynamics

By: Matthew Cary, Aparna Das, Benjamin Edelman, Ioannis Giotis, Kurtis Heimerl, Anna Karlin, Scott Duke Kominers, Claire Mathieu and Michael Schwarz

We study the dynamics of multi-round position auctions, considering both the case of exogenous click-through rates and the case in which click-through rates are determined by an endogenous consumer search process. In both contexts, we demonstrate that the dynamic... View Details

Keywords: Sponsored Search; Advertising; Google; Equilibrium Selection; Online Advertising; Advertising Industry

March 2013
Article

Punctuated Generosity: How Mega-events and Natural Disasters Affect Corporate Philanthropy in U.S. Communities

By: Andras Tilcsik and Christopher Marquis

Geographic communities have been shown to affect organizations through their enduring features, but less attention has been given to communities as sites of human-made and natural events that occasionally disrupt the lives of organizations. We develop a... View Details

Keywords: Geographic Communities; Punctuated Equilibrium; Corporate Social Responsibility; Institutional Theory; Natural Disasters; Situation or Environment; Balance and Stability; Corporate Social Responsibility and Impact; Business and Community Relations; Philanthropy and Charitable Giving; United States

Summer 2014
Article

When Does a Platform Create Value by Limiting Choice?

By: Ramon Casadesus-Masanell and Hanna Halaburda

We present a theory for why it might be rational for a platform to limit the number of applications available on it. Our model is based on the observation that even if users prefer application variety, applications often also exhibit direct network effects. When there... View Details

Keywords: Platform Governance; Direct Network Effects; Indirect Network Effects; Complements; Tragedy Of The Commons; Equilibrium Selection; Coordination; Foresight; Strategy; Value Creation; Digital Platforms; Balance and Stability; Decision Choices and Conditions; Consumer Behavior; Applications and Software; Network Effects

SSRN

2022
Working Paper

Heterogeneity of Gain-Loss Attitudes and Expectations-Based Reference Points

By: Pol Campos-Mercade, Lorenz Goette, Thomas Graeber, Alex Kellogg and Charles Sprenger

Existing tests of reference-dependent preferences assume universal loss aversion. This paper examines heterogeneity in gain-loss attitudes, and explores its implications for identifying models of the reference point. In two experimental settings we measure gain-loss... View Details

Keywords: Reference-dependent Preferences; Rational Expectations; Personal Equilibrium; Endowment Effect; Expectations-based Reference Points

September 2019
Article

Trading Networks with Frictions

By: Tamás Fleiner, Ravi Jagadeesan, Zsuzsanna Jankó and Alexander Teytelboym

We show how frictions and continuous transfers jointly affect equilibria in a model of matching in trading networks. Our model incorporates distortionary frictions such as transaction taxes and commissions. When contracts are fully substitutable for firms, competitive... View Details

Keywords: Trading Networks; Frictions; Competitive Equilibrium; Matching With Contracts; Stability; Trail Stability

1986
Working Paper

Price Competition with a Distribution of Switch Costs and Reservation Prices

By: Jerry R. Green and Suzanne Scotchmer

When there is a distribution of switch costs and of reservation prices for a good, and marginal cost of producing the good is zero, equilibrium in pure price strategies may (and sometimes must) exhibit price dispersion. Equilibrium may or may not exist, and there may... View Details

2011
Working Paper

The Impact of Horizontal Mergers and Acquisitions in Price Competition Models

The question of what impact mergers and acquisitions have on key equilibrium performance measures is fundamental to our understanding of competitive dynamics in an oligopolistic industry. We address these questions in the context of price competition models with... View Details

Keywords: Mergers and Acquisitions; Cost; Price; Profit; Duopoly and Oligopoly; Performance Efficiency; Mathematical Methods; Competition

November 2006
Background Note

Technical Game Theory Note #1: Solving Bi-matrix Games

By: Dennis A. Yao

Explains how to solve bi-matrix games and introduces the Nash Equilibrium concept. View Details

Keywords: Game Theory; Mathematical Methods; Learning; Balance and Stability; Planning; Strategic Planning; Performance Improvement; Strategy; Games, Gaming, and Gambling

Educators

March 2007
Article

Internet Advertising and the Generalized Second Price Auction: Selling Billions of Dollars Worth of Keywords

By: Benjamin Edelman, Michael Ostrovsky and Michael Schwarz

We investigate the "generalized second-price" auction (GSP), a new mechanism used by search engines to sell online advertising. Although GSP looks similar to the Vickrey-Clarke-Groves (VCG) mechanism, its properties are very different. Unlike the VCG mechanism, GSP... View Details

Keywords: Auctions; Search Technology; Online Advertising; Strategy; Balance and Stability

2017
Working Paper

Lone Wolves in Competitive Equilibria

By: Ravi Jagadeesan, Scott Duke Kominers and Ross Rheingans-Yoo

This paper develops a class of equilibrium-independent predictions of competitive equilibrium with indivisibilities. Specifically, we prove an analogue of the “Lone Wolf Theorem” of classical matching theory, showing that when utility is perfectly transferable, any... View Details

Keywords: Indivisibilities; Matching; Lone Wolf Theorem; Marketplace Matching; Theory

SSRN

August 2020
Article

Lone Wolves in Competitive Equilibria

By: Ravi Jagadeesan, Scott Duke Kominers and Ross Rheingans-Yoo

This paper develops a class of equilibrium-independent predictions of competitive equilibrium with indivisibilities. Specifically, we prove an analogue of the “Lone Wolf Theorem” of classical matching theory, showing that when utility is perfectly transferable, any... View Details

Keywords: Indivisibilities; Matching; Lone Wolf Theorem; Marketplace Matching; Theory

2022
Working Paper

On the Estimation of Demand-Based Asset Pricing Models

By: Philippe van der Beck

A growing literature uses portfolio holdings data to quantify the impact of investor demand on equilibrium prices via counterfactual experiments. The key parameter in relating demand and equilibrium prices is investors’ elasticity of demand with respect to the price.... View Details

Keywords: Price; Investment Portfolio; Institutional Investing; Financial Instruments