[UBS hires three Barclays bankers to expand US investment banking business] UBS has joined UBS as UBS continues to expand its investment banking business in the United States. According to a memo sent to employees by UBS, Marco Valla will join UBS as co-head of the global banking division with Javier Oficialdegui. Valla takes over from Ros L'Esperance, which will create a new corporate advisory team made up of UBS's most senior client-facing bankers in each region. A UBS spokesman confirmed the contents of the memo. Jeff Hinton, who recently co-headed mergers and acquisitions at Barclays America, and Kurt Anthony, managing director of Barclays' consumer retail division, will also join UBS, according to the memo.