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- 2021
- Working Paper
Dynamic Pricing Algorithms, Consumer Harm, and Regulatory Response
By: Alexander J. MacKay and Samuel Weinstein
Pricing algorithms are rapidly transforming markets, from ride-sharing apps, to air travel, to online retail. Regulators and scholars have watched this development with a wary eye. Their focus so far has been on the potential for pricing algorithms to facilitate...
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- 2022
- Working Paper
Many Markets Make Good Neighbors: Multimarket Contact and Deposit Banking
By: Jonathan Wallen and John Hatfield
We investigate the relationship between the interest rates offered to consumers in a deposit banking market and the contact that banks in that market have with each other in other markets.
We show, in a simple theoretical model, that such overlapping relationships...
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- Article
Regulating Hospital Prices Based on Market Concentration Is Likely to Leave High-Price Hospitals Unaffected
By: Maximilian J. Pany, Michael E. Chernew and Leemore S. Dafny
Concern about high hospital prices for commercially insured patients has motivated several proposals to regulate these prices. Such proposals often limit regulations to highly concentrated hospital markets. Using a large sample of 2017 US commercial insurance claims,...
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- Article
The Covid-19 Pandemic Should Not Delay Actions to Prevent Anticompetitive Consolidation in U.S. Health Care Markets
By: Leemore S. Dafny
This article describes potential regulatory and legislative reforms to assist antitrust enforcement agencies in halting anticompetitive acquisitions and practices, and preserving and promoting competition in health care markets.
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- 2021
- Government Testimony
How Health Care Consolidation Is Contributing to Higher Prices and Spending, and Reforms That Could Bolster Antitrust Enforcement and Preserve and Promote Competition in Health Care Markets
By: Leemore S. Dafny
Reforms to antitrust law and enforcement can help to address rising healthcare prices and spending.
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- March 9, 2021
- Article
Addressing Consolidation in Health Care Markets
By: Leemore S. Dafny
This Viewpoint proposes three steps the Biden administration can take to slow consolidation within health care, which has been shown to raise costs without improving service or quality: better fund federal antitrust enforcement agencies; appoint agency heads committed...
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- 2020
- Working Paper
Vertical Integration of Healthcare Providers Increases Self-Referrals and Can Reduce Downstream Competition: The Case of Hospital-Owned Skilled Nursing Facilities
By: David Cutler, Leemore S. Dafny, David Grabowski, Steven S. Lee and Christopher Ody
The landscape of the U.S. healthcare industry is changing dramatically as healthcare providers expand both within and across markets. While federal antitrust agencies have mounted several challenges to same-market combinations, they have not challenged any...
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- October 2020
- Case
Epic Games: Nineteen Eighty-Fortnight
By: Andy Wu, Miaomiao Zhang and Christopher Zhang
In the midst of intensifying public and political attention towards the market power of big technology, Epic Games in 2020 challenged the status quo that has existed for years in the Apple iOS and Google Android mobile application marketplaces and payment systems....
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- October 2020
- Article
Collusion in Markets with Syndication
By: John William Hatfield, Scott Duke Kominers, Richard Lowery and Jordan M. Barry
Markets for IPOs and debt issuances are syndicated, in the sense that a bidder who wins a contract may invite losing bidders to join a syndicate that together fulfills the contract. We show that in markets with syndication, standard intuitions from industrial...
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Keywords:
Collusion;
Antitrust;
IPO Underwriting;
Syndication;
＂Repeated Games＂;
Markets;
Game Theory
- June 2020
- Article
Informing Dissent
By: Hillary Greene and Dennis Yao
The first part of this commentary argues that because the production of dissent depends on the availability of information, greater attention should focus on government restrictions on access to official information. At no time is this more important than when...
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- March–April 2020
- Article
Pricing Policies that Protect your Brand
By: Ayelet Israeli and Eugene F. Zelek Jr.
When customers seek out online deals, it seems like a win for everybody: Brands, retailers, dealers, and distributors sell more goods, and buyers get a bargain. What's not to like? Here's the problem: Lured by rock-bottom online prices, customers often end up dealing...
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- March 2020
- Article
The Politics of M&A Antitrust
By: Mihir N. Mehta, Suraj Srinivasan and Wanli Zhao
Antitrust regulators play a critical role in protecting market competition. We examine whether firms can use the political process to opportunistically influence antitrust reviews of corporate merger transactions. We exploit the fact that in some mergers, acquirers...
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- 2020
- Working Paper
Collusion in Brokered Markets
By: John William Hatfield, Scott Duke Kominers and Richard Lowery
The U.S. residential real estate agency market presents a puzzle for economic theory: commissions on real estate transactions have remained high for decades even though entry is frequent and costs are low. We model the real estate agency market, and other brokered...
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- March 2019
- Article
Antitrust as Speech Control
By: Hillary Greene and Dennis Yao
Antitrust law, at times, dictates who, when, and about what people can and cannot speak. It would seem then that the First Amendment might have something to say about those constraints. And it does, though perhaps less directly and to a lesser degree than one might...
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- 2019
- Working Paper
Collusion in Markets with Syndication
By: John William Hatfield, Scott Duke Kominers, Richard Lowery and Jordan M. Barry
Many markets, including markets for IPOs and debt issuances, are syndicated: each winning bidder invites competitors to join its syndicate to complete production. Using repeated extensive form games, we show that collusion in syndicated markets may become easier as...
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- March 2017
- Article
Challenges for Empirical Research on RPM
By: Alexander MacKay and David A. Smith
This article discusses the empirical challenges that researchers face when demonstrating the existence and effects of resale price maintenance (RPM). We outline three approaches for finding price effects of RPM and the corresponding hurdles in data and methodology. We...
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- December 2016 (Revised February 2019)
- Case
Kurt Summers: Investing in Our Chicago
By: Joshua Margolis and Michael Norris
In 2016, Kurt Summers, the Chicago City Treasurer, faced a decision with potential personal and political ramifications: whether or not to ask the city’s Mayor to join a class action antitrust suit against the city’s creditors for actions they took during the Global...
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- 2016
- Working Paper
Collusion in Markets with Syndication
By: John William Hatfield, Scott Kominers and Richard Lowery
Markets for IPOs and debt issuances are syndicated, in the sense that a bidder who
wins a contract may invite losing bidders to join a syndicate that together fulfills the
contract. We show that in markets with syndication, standard intuitions from...
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- April 2016 (Revised June 2017)
- Teaching Note
Dollar General Bids for Family Dollar
By: Jonas Heese, Paula A. Price and Suraj Srinivasan
In spring 2015, Dollar General CEO Rick Dreiling was looking ahead to retiring at year's end but worried about ensuring continued growth for the company he had built since 2008 into a market leader in the U.S. discount retail world. Dollar General operated over 11,500...
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- March 2016 (Revised May 2020)
- Technical Note
A Brief Note on Global Antitrust
By: Dennis Yao, David Yoffie, Eric Baldwin, Daniel Fisher and Rachel Salisbury
This brief note explores the critical antitrust legal and policy issues facing managers, especially in the world of technology.
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