Peng Zhao joined Citadel Securities from graduate school as a Senior Quantitative Researcher in 2006. He became the firm’s Chief Executive Officer in 2017.One of the early architects of Citadel Securities, Peng was quickly recognized not only as a remarkable statistician, but also as a leader whose passion and performance brought out the best in others. Peng’s rapid ascent reflects the culture of meritocracy he continues to foster at the firm. Under Peng’s leadership, Citadel Securities has accelerated its global growth across products, markets, and regions.