Sonterra Cap. Master Fund, Ltd. v. UBS AG

CourtCourt of Appeals for the Second Circuit
DecidedSeptember 15, 2025
Docket19-2979
StatusPublished

This text of Sonterra Cap. Master Fund, Ltd. v. UBS AG (Sonterra Cap. Master Fund, Ltd. v. UBS AG) is published on Counsel Stack Legal Research, covering Court of Appeals for the Second Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Sonterra Cap. Master Fund, Ltd. v. UBS AG, (2d Cir. 2025).

Opinion

19-2979(L) Sonterra Cap. Master Fund, Ltd. v. UBS AG

United States Court of Appeals For the Second Circuit

August Term 2023

Argued: April 30, 2024 Decided: September 15, 2025

Nos. 19-2979(L), 19-3187(XAP)

SONTERRA CAPITAL MASTER FUND, LTD., on behalf of itself and all others similarly situated, RICHARD DENNIS, on behalf of themselves and all others similarly situated, FRONTPOINT EUROPEAN FUND L.P., on behalf of themselves and all others similarly situated,

Plaintiffs-Appellants-Cross-Appellees,

v.

UBS AG,

Defendant-Appellee-Cross-Appellant,

BARCLAYS BANK PLC, COOPERATIVE CENTRALE RAIFFEISEN-BOERENLEENBANK B.A., LLOYDS BANKING GROUP PLC, THE ROYAL BANK OF SCOTLAND PLC, JOHN DOES 1-50, BARCLAYS CAPITAL INC.,

Defendants-Appellees,

DEUTSCHE BANK AG,

Defendant. Before: JACOBS, SULLIVAN, and NARDINI, Circuit Judges.

Plaintiffs – an individual, an investment fund, and a limited partnership that traded in derivatives based on the Sterling London Interbank Offered Rate (“Sterling LIBOR”) – appeal from a judgment of the United States District Court for the Southern District of New York (Broderick, J.) dismissing their claims under the Sherman Act and the Commodity Exchange Act (the “CEA”) against several banks that allegedly conspired together to manipulate that rate. The district court concluded that these claims failed for several reasons, including that (1) Sonterra Capital Master Fund, Ltd. and Richard Dennis lacked antitrust standing; (2) FrontPoint European Fund L.P. no longer had litigating capacity and had not assigned its claims to its would-be substitute; and (3) Dennis had failed to plead specific intent with respect to his CEA claims. We take a more direct road to the same result: because Plaintiffs have failed to allege actual injury under the Sherman Act or CEA, we AFFIRM the judgment of the district court without reaching any other issue.

AFFIRMED.

ERIC F. CITRON (Margaret MacLean, Vincent Briganti, Lowery Dannenberg, P.C., White Plains, NY; Jody Krisiloff, Lovell Stewart Halebian Jacobson LLP, New York, NY; Jamison Diehl, The Law Office of Jamison A. Diehl, New York, NY, on the brief), Gupta Wessler LLP, Washington, D.C., for Plaintiffs-Appellants-Cross-Appellees.

SETH M. ROKOSKY (Mark A. Kirsch, Eric J. Stock, Jefferson E. Bell, on the brief), Gibson, Dunn & Crutcher LLP, New York, NY, for Defendant-Appellee-Cross-Appellant UBS AG.

MARC J. GOTTRIDGE (Lisa J. Fried, Herbert Smith Freehills New York LLP, New York, NY; Benjamin A. Fleming, Hogan Lovells US LLP, New York, NY, on the brief), ,

2 Herbert Smith Freehills New York LLP, New York, NY, for Defendant-Appellee Lloyds Banking Group plc

Jeffrey T. Scott, Matthew J. Porpora, Sullivan & Cromwell LLP, New York, NY, for Defendants-Appellees Barclays Bank PLC and Barclays Capital Inc.

David R. Gelfand, Tawfiq S. Rangwala, Milbank LLP, New York, NY; Mark D. Villaverde, Millbank LLP, Los Angeles, California, for Defendant-Appellee Coöperatieve Rabobank U.A.

David S. Lesser, Laura Harris, King & Spalding LLP, New York, NY; G. Patrick Montgomery, King & Spalding LLP, Washington, DC, for Defendant-Appellee The Royal Bank of Scotland plc (n/k/a NatWest Markets plc).

RICHARD J. SULLIVAN, Circuit Judge:

Plaintiffs – an individual, an investment fund, and a limited partnership 1

that traded in derivatives based on the Sterling London Interbank Offered Rate

(“Sterling LIBOR”) – appeal from a judgment of the United States District Court

for the Southern District of New York (Broderick, J.) dismissing their claims under

the Sherman Act and the Commodity Exchange Act (the “CEA”) against several

1Plaintiffs are Richard Dennis, Sonterra Capital Master Fund, Ltd. (“Sonterra”), and FrontPoint European Fund, L.P. (“FrontPoint”).

3 banks that allegedly conspired together to manipulate that rate (“the

Defendants”). The district court concluded that these claims failed for several

reasons, including that (1) Sonterra and Dennis lacked antitrust standing; (2)

FrontPoint no longer had litigating capacity and had not assigned its claims to its

would-be substitute; and (3) Dennis had failed to plead specific intent with respect

to his CEA claims.

We take a more direct road to the same result: because Plaintiffs have

failed to allege actual injury under the Sherman Act or CEA, we AFFIRM the

judgment of the district court without reaching any other issue.

I. BACKGROUND

Sterling LIBOR is a benchmark that tracks “the average competitive interest

rate at which leading banks [may] borrow in pound sterling (that is, the British

pound currency) in London from other banks.” J. App’x at 38. 2 This benchmark

was “created by Defendants and their trade organization, the British Bankers’

Association (‘BBA’).” Id.

2The facts here are drawn from the Consolidated Amended Class Action Complaint (“CAC”). We accept these facts as true for the purposes of this appeal. See Vitagliano v. County of Westchester, 71 F.4th 130, 133 n.3 (2d Cir. 2023).

4 The BBA calculates LIBOR by compiling information regarding interest

rates from a “panel” of sixteen banks. Every day, each bank on the panel

estimates the interest at which it could borrow pounds sterling in the London

interbank market at fifteen different maturities (or “tenors”). The banks then

send these quotes to BBA’s agent, Thomson Reuters, which identifies and averages

the middle fifty percent of estimated interest rates for each tenor. That average

“becomes the daily official Sterling LIBOR for that particular tenor and is

distributed electronically” through various financial services platforms. Id. at 82.

Banks submitting Sterling LIBOR quotes agree that they will not collude,

coordinate, or give each other advance notice of their LIBOR submissions, and

pledge that those submissions will “accurately reflect the average competitive

market borrowing rate.” Id. at 78.

Sterling LIBOR is often used to determine the value of certain derivatives.

A derivative is “a contract among two or more parties in which the price or

payment term derives from another source.” Id. at 37. Several of the derivatives

at issue in this appeal – including certain foreign exchange forwards, futures

contracts traded on the Chicago Mercantile Exchange, and interest-rate swaps –

were “priced, benchmarked, and/or settled based on Sterling LIBOR.” Id. at 83.

5 Plaintiffs allege that Defendants conspired to manipulate Sterling LIBOR to

reap higher profits trading such Sterling LIBOR-based derivatives. According to

the CAC, Defendants’ traders sent their LIBOR-submission teams electronic

messages asking them to present false Sterling LIBOR quotes, which varied

upward or downward from the real competitive market rate depending on the

traders’ positions with respect to Sterling LIBOR-based derivatives. The

derivatives teams communicated both internally – with each bank’s own

respective LIBOR submitters – and externally, with submitters at different banks.

To “coordinate their manipulative conduct,” Defendants also used inter-dealer

brokers, which serve as intermediaries between banks. Id. at 99–102. In this

way, Defendants conspired to “suppress, inflate, maintain, or otherwise alter

Sterling LIBOR.” Id. at 142.

Plaintiffs assert that this scheme resulted from “a conscious effort by senior

management to increase profits,” id. at 112, and that Defendants facilitated this

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