Ulster Bank owner Royal Bank of Scotland (RBS) has been hit with an $85 million (£68m) fine by US authorities over financial trading manipulation.
The banking giant has been accused by the US Commodity Future Trading Commission (CFTC) of attempting to manipulate the US Dollar International Swaps and Derivatives Association Fix (ISDAFIX) - a global benchmark reference in a range of interest rate products.
The news comes a week after RBS set aside another $3.8bn (£3.1bn) ahead of an expected fine from US authorities to cover a potential settlement over its alleged role in the mis-selling of toxic mortgage-backed securities before the financial crisis.
Aitan Goelman, director of the CFTC’s division of enforcement, said it was the fourth time the organisation had taken enforcement action over attempts to manipulate the ISDAFIX.
“These actions, and the CFTC’s previous cases against those who sought to corrupt the Libor and foreign exchange benchmark rates, make clear that the Commission takes very seriously its role in ensuring the integrity of any and all benchmarks used in our markets.”
RBS traders tried to boost derivative positions held by the bank by attempting to manipulate the US dollar ISDAFIX over five years between January 2007 and March 2012.
The Commission found that traders had joked about their efforts to try and move the US dollar ISDAFIX in a string of emails and audio recordings.
During the exchanges, one RBS trader turned a news story about hedge fund Amaranth being charged by the CFTC with manipulating natural gas futures into a joke about the actions of RBS traders.
Ross McEwan, RBS CEO, strongly condemned the traders’ actions and said it was an example of “past misconduct”.
“These findings make for uncomfortable reading and we have already taken significant steps to make sure this kind of behaviour cannot happen again,” he said.