Citigroup has replaced the heads of its prime brokerage group in the latest management shakeup at the troubled Wall Street giant.

The firm said that Ali Hackett and Tom Tesauro would be replaced as co-heads of global equity finance and prime brokerage by Nick Roe, who has headed the bank’s European prime brokerage effort since 2005. Hackett and Tesauro are leaving the firm to pursue other opportunities, according to an internal memo.

Roe, who will remain based in London, joined Citi from Deutsche Bank, where he headed the global prime brokerage business.