Antitrust & Competition

Secretariat provides trusted economic expertise across the full spectrum of antitrust matters, from government investigations and merger reviews to monopolization disputes and private class actions involving alleged monopolization and cartel behavior. Our team delivers rigorous analysis, persuasive testimony, and practical insight that help clients navigate complex competition challenges with confidence.

Regulators and courts regularly rely on economic insights to determine the competitive impact of specific transactions and conduct. In this legal environment, Secretariat has earned a position as a preeminent resource for trusted, independent antitrust and competition analysis that is backed by experience with key economic issues, state-of-the-art empirical analysis, and an ability to present complex information in clear, understandable terms.

Clear and compelling analysis during complex antitrust matters

Antitrust investigations and litigation of proposed mergers and acquisitions (M&A) or allegedly anticompetitive conduct — whether government-initiated or a private action — requires the kind of clear, expert economic analysis Secretariat’s antitrust economists are known for and have provided for decades. Together, our experts have been retained in more than 1,400 antitrust matters across nearly all industries.

Antitrust review of M&A transactions by regulators inherently and routinely involves answering economic questions. How is a market defined? What will be the transaction’s competitive effects? Answering these and related questions requires a thorough grasp of the nature of competition in specific markets and detailed empirical analysis and modeling of market conditions. Obtaining clearance for the transaction depends on clear analysis and persuasive presentation to regulators. Secretariat’s experts provide thorough data analysis, modeling, and objective advice clients need when considering a transaction, as well as the detailed and fact-based documentation and presentations regulators value.

When antitrust disputes emerge, there is no substitute for experts with the ability to present clear and understandable economic analyses to judges, juries, government regulators, and arbitrators. Secretariat’s experts provide straightforward and convincing testimony in disputes involving price fixing, bid rigging, and monopolization claims. Whether the testimony relates to theories and the analysis of competitive harm, class certification, or damage estimation, our experts are adept at merging sound economic evaluations and reasoning with prevailing legal standards, actual case law, and the unique facts of every matter.

In addition to our expert economic work in merger reviews and antitrust litigation, Secretariat provides critical support in regulatory and enforcement investigations, including those involving alleged price-fixing, bid rigging, and cartel conduct. Our professionals assist white-collar attorneys and in-house counsel in both criminal and civil antitrust investigations by preparing detailed reports, tracing communications, and analyzing complex patterns of collusion and pricing behavior. We offer expert testimony and strategic advice grounded in empirical analysis. Our team of forensic accountants, data scientists, technologists, and economists applies a rigorous, coordinated approach to uncovering key facts and examining evidence. This integrated capability ensures a comprehensive response to investigative demands and supports clients navigating high-stakes antitrust inquiries with clarity and confidence.

Key Experts

Keith Waehrer

Managing Director

+1 202 833 5206

Focus Areas

Antitrust Merger Review

Mergers and acquisitions face increasing regulatory scrutiny. Secretariat’s experts deliver clear, data-driven analysis to assess competitive effects, respond to investigative demands, and support merger litigation when needed. Working closely with counsel and enforcement agencies, we help clients secure approvals and navigate complex merger reviews with confidence.

Monopolization & Monopoly Maintenance Litigation

Competition authorities and private plaintiffs continue to scrutinize dominant firms for alleged exclusionary conduct. Secretariat’s economists provide independent analysis and expert testimony to evaluate practices such as exclusive dealing, bundled discounts, and vertical foreclosure. From investigation to trial, we help clients address complex liability theories with clear, defensible economic evidence.

Antitrust Investigations

Antitrust investigations are increasingly complex, data-driven, and high-stakes. Secretariat’s experts comprise forensic accountants, economists, data scientists, and technologists who deliver rigorous analysis, forensic insight, and expert testimony in matters involving mergers, cartel behavior, and alleged collusion. We help clients respond effectively to regulatory scrutiny and uncover the facts that drive sound legal and strategic decisions.

Featured Expert

Su Sun

Managing Director – Washington, DC

Dr. Sun specializes in economic analysis for antitrust and intellectual property matters. His experience includes economic analysis in merger review, price fixing, and abuse of dominance cases on antitrust issues, and economic analyses and damage calculations in patent, copyright, trademark, and trade secret cases. He has testified in both U.S. and Chinese court cases.

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