Citigroup in Hong Kong has hired Martin Stackler, a financial engineer in structuring and pricing at Société Générale, to head up its exotic equity derivative business in Asia. Stackler will report to the bank's head of structuring, Asia, Cyrille Troublaiewitch and Laurent Chouillet, head of exotic trading, Asia. Before joining Citi, Stackler was a financial engineer at Société Générale in charge of the pricing of equity- and hybrid-linked structured products. He reported to Bernard Rogier, fo