The beefing up of its FX business shows no sign of letting up at UniCredit. The bank has hired Chris Dunning, who left Merrill Lynch in March, as head of FX exotic options trading. He reports jointly to Dan O’Sullivan, the banks global head of FX trading, and Tim Taubman, it’s co-head of option trading. Market sources also suggest that the bank has hired Joe Craven, who recently left his job as head of FX and local market sales at Dresdner NY.