Brad Karp is chairman and partner at Paul, Weiss, Rifkind, Wharton & Garrison LLP. This post is based on a Paul Weiss client memorandum by Mr. Karp, Eric Goldstein, Mark Pomerantz, and Daniel J. Toal.
On September 23, 2013, the United States Court of Appeals for the Second Circuit issued a decision clarifying the standard for aiding and abetting liability under the Commodities Exchange Act (“CEA”). The decision, in In re Amaranth Natural Gas Commodities Litigation, No. 12-2075-cv (2d Cir. Sept. 23, 2013), affirmed a judgment of the United States District Court for the Southern District of New York, which dismissed a putative class action filed by purchasers of natural gas futures contracts against J.P. Morgan Chase & Co., J.P. Morgan Chase Bank, Inc. and J.P. Morgan Futures, Inc. (“JPMorgan”). The purchaser plaintiffs claimed that Amaranth, a hedge fund for which JPMorgan provided clearing broker services, manipulated natural gas futures prices on the NYMEX commodities exchange, and that JPMorgan aided and abetted Amaranth’s manipulation.