The hefty fines centred on London, the world's biggest hub for the USD 5.3-trillion-per-day forex market, and the British government hailed a move to "clean up corruption" in the City as the financial centre's reputation has been badly damaged in recent years.
British banks HSBC and Royal Bank of Scotland (RBS), US peers Citigroup and JPMorgan Chase, and Swiss lender UBS have all been fined by Britain's Financial Conduct Authority (FCA) and the US Commodity Futures Trading Commission (CFTC).
The Swiss Financial Market Supervisory Authority (FINMA) also announced a settlement of 134 million Swiss francs (USD139 million) with UBS over the matter.
However Barclays -- which was at the heart of the 2012 Libor rate-rigging affair -- was not included in the settlements and remains under investigation by authorities.
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The uncertainty sent Barclays' share price sliding 2.15 per cent to 229.55 pence in early afternoon deals on the falling FTSE 100 index. The bank had last month set aside 500 million pounds for a potential fine to settle forex allegations.
The FCA said that it found "ineffective controls" at the five banks between 2008 and 2013, allowing traders "to put their banks' interests ahead of those of their clients, other market participants and the wider UK financial system".
"The traders put their own interests ahead of their customers. They attempted to manipulate the market and abused the trust of the public and us as regulators," FCA chief executive Martin Wheatley told reporters at a press conference in London.
The investigation homed in on trading in the world's top 10 currencies, known as the "G10".
Traders at the different banks "formed tight knit groups in which information was shared about client activity", the British regulator said.
It added that traders used code to identify clients without naming the them. They referred to themselves with nicknames like "The 3 Musketeers", "The Players" and "The A-team".