Read also:
• Big banks fined billions in currency rigging probe
"Many will see this as drawing a line under this sad episode," Tim Dawson, an analyst at Helvea in Geneva who covers financial firms, told Bloomberg News. "We are less optimistic," adding that the banks were "likely to face a heavy burden of potential litigation in coming years."
In Europe, the Stoxx 600 finished the session with a 1.1 per cent drop from the previous close. The UK's FTSE 100 Index fell 0.3 per cent, France's CAC 40 shed 1.5 per cent, while Germany's DAX sank 1.7 per cent.
"There's a bit of uncertainty and Ukraine's one element of it," Veronika Pechlaner, who helps oversee US$2.3 billion at Ashburton, told Bloomberg News. "There's also a bit of negative sentiment for the banking sector ahead of the G-20 meeting, where capital regulations will be discussed."
The British pound dropped after the Bank of England downgraded its economic growth forecasts and warned inflation might slide below 1 per cent, signalling the central bank might not raise its benchmark interest rate as soon as some had expected.
The central bank forecast the economy will grow 2.9 per cent next year and 2.6 per cent in 2016, down from August estimates for 3.1 per cent and 2.8 per cent respectively.
"A spectre is now haunting Europe - the spectre of economic stagnation, with growth disappointing again and confidence falling back," Bank of England Governor Mark Carney said in a statement.
Oil extended its slide after Saudi Arabia's Oil Minister Ali al-Naimi offered investors little hope the global supply imbalance would improve anytime soon.
"Talk of a price war is a sign of misunderstanding, deliberate or otherwise, and has no basis in reality," Naimi told an event in the Mexican Pacific resort of Acapulco, Reuters reported.