John Koudounis, president and CEO of Mizuho Securities USA(MSUSA), the US investment banking subsidiary of Mizuho Financial Group (NYSE: MFG), confirmed that he has resigned his position effective immediately to pursue other opportunities.
“It has been an incredible experience to work with the entire team at Mizuho over the past eight years. This is an extremely talented group of professionals, and I am grateful for the opportunity to have assembled a world-class team that I am confident will continue its trajectory of success,” Koudounis said.
During his tenure, Koudounis built MSUSA into a full-service investment bank, expanding its capabilities in debt capital markets and in equities. Under his leadership, MSUSA has grown in terms of profitability, number of clients, and product diversification. Mizuho now ranks in the top ten in investment grade corporate bonds and asset-backed securities, and in the top 20 for high-yield underwriting. The Greek-American former head of Mizuho USA is credited as one of the few CEOs on Wall Street who successfully executed a growth plan while other banks continue to retrench.
Koudounis joined MSUSA in 2008 as head of its fixed income division and was appointed CEO in 2010. At the time, he was the youngest CEO appointed on Wall Street. Previously, he was managing director and head of fixed income at ABN AMRO North America.