Samuel Rosenberg joined Natixis CIB Americas in the summer of 2014 as head of equity derivatives sales, Americas and was charged with driving its client franchise in the region. SRP spoke to him about the French bank's in-depth refocusing of its equity derivatives to service investors across the Americas and how its cross-asset investment solutions, financial engineering, flow sales and fund solutions will be organised to achieve the Natixis's ambitions. What is your main mandate as head