Mega-money manager Blackrock snagged Rajesh Nagella, who left Citigroup in July. Nagella had been with Citi since 2008, where he held various roles including EMEA head of algorithmic products, head of algo products for the U.S. and head of its Americas execution platform. If you have a new job or promotion to report, let me know at jdantona@marketsmedia.com Stephen Luparello, Citadel Securities MUFG Investor Services, the global asset servicing arm of Mitsubishi UFJ Financial Group, has hired Ben Griffiths as Managing Director, Global Head of Fund Financing.