Crypto market maker GSR Markets said that Jakob Palmstierna will move from the CEO position to the president position, and that Rich Rosenblum and Xin Song will jointly hold the position. London-based GSR, which employs about 200 people worldwide, said revenues more than tripled in the first half of the year compared with the same period last year. Rosenblum also revealed that GSR has remained profitable and has never raised external funding.