UBS, whose fixed-income, currencies and commodities business was responsible for the bulk of its losses in sub-prime mortgages, was among the banks to lose the most market share through the crisis.

The Swiss bank's share of total FICC revenues among investment banks fell from 4.1% at the end of the first half of 2007 to 1.9% at the end of last year, according to Morgan Stanley and Oliver Wyman research. Other banks to lose market share included Royal Bank of Scotland and Morgan Stanley, whereas Goldman Sachs, Barclays Capital and JP Morgan grew the most, according to the research.