Mirae Asset Financial Group announced a massive reshuffle at the executive level on Monday, signaling a generational shift in leadership as its founding members are to step down. Mirae Asset Securities CEO and Chairman Choi Hyun-man, the group’s No. 2 man, will leave the firm 26 years after he co-founded the group together with Group Chairman Park Hyeon-joo back in 1997. Having served top posts at key affiliate.