This article was first published in the Winter 2013/2014 issue of Best Execution magazine.In it, GreySpark Partners senior consultant Russell J. Dinnage examines ways to redefine the optimal FX sellside business.This content is restricted to site members. If you are an existing user, please log in. New users may register below. Login Username or email address * Password * Remember me Log in Lost your password?Register Username * Email address * Password * Register