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Lawsuit accusing 10 banks of rigging U.S. Treasury market dismissed


(Reuters) — A federal judge Thursday dismissed a long-running antitrust lawsuit accusing 10 of the world’s largest banks of pursuing two interrelated conspiracies to suppress competition in the now $23.2 trillion market for U.S. Treasury securities.

U.S. District Judge Paul Gardephe in Manhattan said the 18 plaintiffs — including pension and retirement funds, banks and companies that traded in Treasuries — failed to address shortcomings he found a year ago when dismissing an earlier version of their proposed class action. 

The defendants include Bank of America, Barclays, BNP Paribas, Citigroup, Credit Suisse, Goldman Sachs, JPMorgan Chase, Morgan Stanley, NatWest Group and UBS, as well as trading platform operator Tradeweb Markets.

Traders accused the banks of colluding from 2007 to 2015 to use chat rooms to swap confidential customer orders and coordinate strategies in a so-called “auction conspiracy.”

They also accused Bank of America, Barclays, Citigroup, Credit Suisse, Goldman Sachs, JPMorgan and Morgan Stanley of having since 2013 exploited their market power by boycotting electronic trading platforms that offered “anonymous” trading and better prices.

But in a 74-page decision, Judge Gardephe said newly introduced evidence of chat excerpts, statistical analyses of the banks’ trading, and alleged pressure to boycott disfavored platforms was not enough to establish illegal collusion.

Unlike a year ago, the judge said he will not let the plaintiffs amend their complaint again.

“There is no reason to believe that further amendment would be productive,” Judge Gardephe wrote.

Dan Brockett, a lawyer for the plaintiffs, said in an email: “We are reviewing the opinion and will look at and consider all options on behalf of the class.”

The litigation began in July 2015, following news reports that the U.S. Department of Justice was probing whether banks had manipulated Treasury markets.

The case is In re: Treasuries Securities Auction Antitrust Litigation, U.S. District Court, Southern District of New York, No. 15-md-02673.