Quantitative hedge fund Qube Research and Technologies is on a hiring spree. Having seemingly recruited Pierre Lafitte, head of Jump Trading's London office, it's also thought to have hired Francois Jeulin, Citadel Securities' Hong Kong-based head of index arbitrage.Get Morning Coffee ☕ in your inbox. Sign up here.Bloomberg reported the exits of both Jeulin and Sam Zoghaib, quant research lead for index arbitrage from Citadel Securities last month, but didn't say where they were headed. It's not clear whether Zoghaib is going to Qube too. Qube declined to comment.