Total third-quarter revenues at the 10 largest investment banks were down by over a third compared to the second quarter, with credit losses weighing heavily on performance, forcing analytics company Coalition to cut billions of dollars from its full-year revenue forecast.

The data highlights the torrid third quarter endured by many of the world's leading global investment banks. The banks in the Coalition Index are: Bank of America Merrill Lynch, Barclays Capital, Citigroup, Credit Suisse, Deutsche Bank, Goldman Sachs, JP Morgan, Morgan Stanley, Royal Bank of Scotland and UBS.