We have compiled a list of the top 21 Chief Technology Officers in the electronic trading industry, operating in North America. The 21 CTOs were selected based on a survey distributed through our Total Trading blog with the following criteria in mind: Excellence in building and maintaining technological infrastructure Respected selection of technological products Influence on the electronic trading industry We want you to gain a true insight into North America’s top technology officers, so we asked all of them the same questions: 1.) What has been your biggest achievement or accomplishment as CTO? 2.) Which future technology or advancement…