Citigroup has hired lawyer Mushtaq Kapasi as a structurer in its equity derivatives group in Hong Kong. Kapasi, an associate in the international capital markets group at Allen & Overy in Hong Kong, joins as a v.p., according to Harold Kim, managing director in Asia-Pacific equity derivatives at Citi in Hong Kong. Kim declined further comment and Rowena Kwok, spokeswoman at Allen & Overy in Hong Kong, did not return calls by press time. Market officials said Kapasi was recruited given his previous role overlooking derivative products from a legal perspective and also his strong background in higher mathematics.