Ex-Rabobank traders lose bid in U.S. to overturn Libor convictions

(Adds further details on ruling, background on case)

By Nate Raymond

NEW YORK, Feb 11 (Reuters) - Two former Rabobank traders on Thursday lost a bid to overturn their convictions arising from an international investigation into the manipulation of Libor, the leading global benchmark for pricing financial transactions.

U.S (Other OTC: UBGXF - news) . District Judge Jed Rakoff in Manhattan (Hamburg: 32U.HM - news) declined to dismiss the case against Anthony Allen and Anthony Conti, the former traders from the United Kingdom, who argued that their rights against self-incrimination were violated.

The decision came three months after a federal jury in Manhattan found Allen, 44, and Conti, 46, guilty of conspiracy and wire fraud in the first U.S. trial spilling out of a global benchmark rigging investigation.

Prosecutors accused Allen, Rabobank's former global head of liquidity and finance, and Conti, a former senior trader, of engaging in a scheme to manipulate the U.S. dollar and yen Libor rates to benefit the Dutch lender's trading positions.

The men argued the case should be dismissed, having become tainted after Paul Robson, an ex-Rabobank trader turned cooperating witness, reviewed 2013 testimony that Allen and Conti were compelled to give to a UK regulator, the Financial Conduct Authority, in a related probe.

Allen and Conti said Robson's review of their testimony may have influenced any information he provided U.S. authorities or at trial, causing their statements to be used against them in violation of the U.S. Constitution.

But Rakoff said prosecutors had a "more than sufficient independent basis" to bring charges and had demonstrated the evidence Robson presented to jurors "had sources wholly independent from the defendants' compelled testimony."

Tor Ekeland, Conti's lawyer, said he was disappointed and would appeal. Allen's lawyer did not immediately respond to a request for comment.

Libor, or the London interbank offered rate, is a short-term rate financial institutions charge each other for loans that is calculated based on submissions by a panel of banks.

Hundreds of trillions of dollars in short-term interest rates, swaps and other financial products are pegged to Libor.

Allen and Conti were indicted in October 2014, a year after Rabobank reached a $1 billion deal to resolve related U.S. and European probes.

Their trial followed a London trial involving yen Libor manipulation that led to the conviction of Tom Hayes, a former UBS AG (NYSEArca: FBGX - news) and Citigroup Inc (NYSE: C - news) trader. His prison sentence was cut in December to 11 years.

Six former brokers were acquitted last month of conspiring with Hayes to manipulate interest rates in London's second Libor trial.

The case is U.S. v. Allen, U.S. District Court, Southern District of New York, No. 14-cr-272. (Reporting by Nate Raymond; Editing by Tom Brown and Lisa Shumaker)