April 13, 2008 US banks Citigroup and Merrill Lynch reveal fresh $15bn loss Iain Dey CITIGROUP and Merrill Lynch will heap further pain on Wall Street this week as they reveal additional sub-prime write-downs totalling $15 billion (£7.6 billion) or more. In another sign of the intense pressure on leading banks, Deutsche Bank is attempting to offload some of its €35 billion (£28 billion) of toxic debt to a consortium of private-equity firms. Huge exposure to American mortgages is expected to result in Citi taking a $10 billion hit to its accounts, dragging the bank to a first-quarter loss of...