Bobby Jain's multibillion-dollar hedge fund Jain Global has recruited more than 10 portfolio managers for its London office, pushing the total above 50 members as it prepares for its debut on 1 July, according to a report by Financial News.  According to Financial News’s sources, the London office has added Syril Pathmanathan from DE Shaw, Paul Jefferys from Citadel, Jason Greenberg from BlueCrest Capital Management.  Other hires include Peter Bolland, CIO for systematic trading, as well as several systematic portfolio managers.  Leading the firm's European operations are former Deutsche Börse Managing Director Ashwin Kumar, Head of Europe, and former UBS executive James O’Callaghan, Global Head of Trading.  Additionally, Anton Merlushkin, Head of Quant Modelling and Analytics, and Jeremy Wyatt, Head of EMEA Trading, will be based in London.  Jain Global has secured office space at 16 St James’s Street in Mayfair, which can accommodate around 80 staff.  In April, Jain Global added Morgan Stanley's Benedict Stoddart and Credit Suisse’s Richard Martin as portfolio managers to its London office.  Globally, Jain Global has hired more than 150 employees.  Earlier this year, Morgan Stanley’s Sam Kellie-Smith was appointed as Chief Investment Officer and Chief Executive for APAC in the firm’s Singapore office, while this month, Balyasny’s Joanne Lim joined as a senior trader in Hong Kong.