Contract analysis

I. BACKGROUND A. The Transaction On March 14, 2025, Cascade entered into an Agreement and Plan of Merger (the "Merger Agreement") to acquire 100% of the outstanding common stock of Pinnacle for $26.85 per share in cash, representing aggregate consideration of approximately $4.7 billion. The transaction is structured as a reverse triangular merger under Delaware General Corporation Law, pursuant to which a wholly owne

II. LEGAL STANDARD A. Federal Rule of Evidence 702 Federal Rule of Evidence 702, as amended effective December 1, 2023, provides: A witness who is qualified as an expert by knowledge, skill, experience, training, or education may testify in the form of an opinion or otherwise if the proponent demonstrates to the court that it is more likely than not that: (a) the expert's scientific, technical, or other specialized k

III. ARGUMENT A. Dr. Keenan's Market Definition Analysis Is Unreliable Because It Employs a Flawed SSNIP Test Dr. Keenan defines the relevant product market as "online marketplace platform services for third-party sellers in the United States." This narrow market definition is the product of a hypothetical monopolist test that is fundamentally flawed in its design and execution. Specifically, Dr. Keenan's SSNIP analy

1. The Hypothetical Monopolist / SSNIP Framework Requires Consideration of All Competitive Alternatives. The hypothetical monopolist test, also known as the SSNIP (Small but Significant and Non-transitory Increase in Price) test, is the standard analytical framework for defining relevant antitrust markets. Under this test, the analyst begins with a candidate market consisting of the products (or services) of the merg

2. Dr. Keenan's SSNIP Test Ignores Supply-Side Substitution. Dr. Keenan defined the candidate market as "online marketplace platform services for third-party sellers" and conducted his hypothetical monopolist test by examining only whether third-party sellers would switch to other dedicated marketplace platforms in response to a take-rate increase. Keenan Report ¶¶ 42-58. His analysis entirely omitted the supply side

3. Dr. Keenan's SSNIP Test Ignores Cross-Platform Competition. Dr. Keenan's SSNIP test is further undermined by his failure to account for the pervasive cross-platform competition that characterizes the e-commerce sector. Online sellers routinely engage in "multi-homing" — that is, they sell their products across multiple platforms simultaneously, distributing their sales volume among marketplace platforms, direct-to

4. The Analytical Gap Between Dr. Keenan's Data and His Market Definition Conclusion. Even accepting Dr. Keenan's own analytical framework arguendo, the data he assembled do not support the narrow market definition he reached. This analytical gap is precisely the kind of disconnect between data and opinion that the Supreme Court identified in Joiner as grounds for exclusion. Dr. Keenan's own survey data reveal that 3

1. The HHI Calculations Are Only as Reliable as the Underlying Market. Dr. Keenan calculates a pre-merger HHI of 2,361, a post-merger HHI of 2,856, and an HHI increase (delta) of 495. The HHI delta is derived mechanically from the market shares of CascadeMarket and Pinnacle within the proposed market: 2 × 8.2 × 30.1 = 493.64, which the FTC rounds to 495 in its Complaint at ¶ 47. These figures are derived exclusively

2. A Properly Defined Market Yields Dramatically Different Concentration Results. The magnitude of the distortion introduced by Dr. Keenan's narrow market definition is readily apparent when concentration is measured in a properly defined market. In a market defined as all U.S. e-commerce retail — which, as set forth above, encompasses the full range of competitive alternatives available to third-party sellers — tota

3. Dr. Keenan's Market Share Measurement Methodology Contains Additional Flaws. Even within the narrow market Dr. Keenan has defined, his methodology for measuring market shares contains additional errors that compound the market definition problem and render his HHI calculations even less reliable. First, Dr. Keenan measured shares by GMV flowing through the seller side of each marketplace platform, but failed to ac

1. Description of Dr. Keenan's Diversion Ratio Methodology. Beyond his market definition and concentration opinions, Dr. Keenan offers opinions regarding the predicted competitive effects of the merger. The centerpiece of his competitive effects analysis is a set of seller-side diversion ratios purporting to demonstrate that CascadeMarket and Pinnacle are "close competitors" — that is, that a significant share of the

2. The Underlying Survey Data Are Unreliable. Dr. Keenan's seller-side diversion ratios are based on a survey of third-party sellers conducted by Thornfield Research Group. This survey suffers from fundamental design flaws that render it unreliable as a foundation for expert testimony under Rule 702 and Daubert. Litigation-driven framing. The survey was designed and administered after the FTC filed its administrative

3. The Diversion Ratio Model Ignores Multi-Homing. Even if Dr. Keenan's survey data were reliable — and they are not — his diversion ratio framework would still be analytically unsound because it fails to account for the multi-homing behavior of online sellers. As discussed in Section III.A.3 above, a substantial majority of sellers on both CascadeMarket and Pinnacle sell simultaneously on multiple platforms, includi

4. The UPP Analysis Fails to Account for Efficiencies. Even setting aside the deficiencies in Dr. Keenan's diversion ratios, his upward pricing pressure analysis is independently unreliable because it fails to account for cognizable, merger-specific efficiencies. A properly specified UPP model incorporates merger-specific efficiencies as a downward offset against the upward pricing pressure generated by the internali

IV. CONCLUSION For the foregoing reasons, Defendant Cascade Retail Holdings Inc. respectfully requests that this Court grant its motion and enter an order excluding the expert testimony of Dr. Wallace Keenan in its entirety or, in the alternative, limiting his testimony as specified in Section III.E above. This motion is timely filed in advance of the evidentiary hearing on the FTC's motion for a preliminary injuncti