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Jeffrey Armstrong

Jeffrey Armstrong

Managing Director
Jeffrey Armstrong is an economist in the Econ One DC office with twenty years of experience in litigation consulting in antitrust matters. Most ...

David J. Balan

David J. Balan

Managing Director
David J. Balan is a Managing Director whose pro-enforcement practice specializes in developing and litigating antitrust cases.  Prior to joining ...
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Eric Forister

Eric Forister

Managing Director
Eric Forister is a Managing Director with testifying experience on market definition, market power, and damages.  His expertise includes ...
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Krista Holt

Krista Holt

Managing Director
Krista Holt is a Managing Director at Econ One Research, Inc.  She testifies at trial in patent, trademark, trade secret, copyright, false ...
Phillip Johnson EconOne Managing Director

Phillip Johnson

Phillip Johnson

Managing Director
Phillip Johnson is an expert with extensive experience in the complex and sophisticated analyses required in antitrust, class action, and ...
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Jeffrey Leitzinger

Jeffrey Leitzinger

Managing Director
Jeffrey Leitzinger is an expert in the economics of markets, pricing, competitive analysis, valuation, class certification and damages.  Over ...
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John Ramirez

John Ramirez

Managing Director
John Ramirez is an expert in competition and regulatory economics, economic impact analysis and advanced quantitative methods. He has worked on ...
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Leslie Schafer

Leslie Schafer

Managing Director
Leslie Schafer is a Managing Director with Econ One Research, Inc. She applies economic analysis and econometrics to liability and damages ...
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DC (“Dave”) Sharp

DC (“Dave”) Sharp

Managing Director
DC (“Dave”) Sharp is an expert in economic, financial, and other business issues that arise in litigation. As an economic consultant ...

Hal Singer

Hal Singer

Managing Director
Hal Singer Hal Singer is an expert in antitrust, consumer protection, and regulation. He has researched, published, and testified on ...

Ram Tamarappoo

Ram Tamarappoo

Managing Director
Ram Tamarappoo is a Managing Director with Econ One.  He is an economist with over 20 years of international consulting experience providing ...
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Michael Trousdale

Michael Trousdale

Managing Director
Michael Trousdale is a Managing Director at Econ One Research with over 15 years of experience conducting and managing complex economic ...

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Market Definition

Antitrust market definition can be a crucial component of antitrust analysis which involves identifying a relevant market within which the impact of alleged anticompetitive conduct is assessed. A relevant market can be described in several ways, including as a set of products or services which—were a firm to have a monopoly over them—the firm could use the alleged conduct to successfully elevate prices and/or lower quality in a way which harms consumers. Relevant market analysis typically involves consideration of which products are viewed as substitutes, both in terms of characteristics and geographic area.

Defining the relevant market is often central to an antitrust case, as well as in merger and acquisition investigations. When there is a need for product market definition and/or geographic market definition, it is crucial to rely on an experienced economist. Clients rely on Econ One’s antitrust experts for their ability to define relevant markets for the purposes of antitrust analysis. Our experts provide comprehensive expert reports and expert testimony before courts and regulatory agencies.

Defining a relevant market can help determine the boundaries within which firms compete and assess the impact of anticompetitive conduct, mergers, or acquisitions. Econ One economists and consultants have experience defining markets using such as the hypothetical monopolist test or SSNIP test (small but significant and non-transitory increase in price). This includes staying abreast of the latest developments, such as the recently revised DOJ/FTC Merger Guidelines. Econ One’s deep understanding of economic theory, paired with the capability to analyze large amounts of data, results in Econ One being a trusted partner in navigating the complexities of market definition.