Kenneth C. Griffin

Founder, CEO and Co-Chief Investment Officer


Kenneth C. Griffin is the Founder, Chief Executive Officer, and Co-Chief Investment Officer of Citadel, one of the world’s leading alternative investment firms. Intrigued by finance, Ken began investing in 1986 as a freshman at Harvard. Four years later, he founded Citadel, driven by a focus on the combination of exceptional talent, advanced predictive analytics, and powerful software engineering. Today, the Citadel team of over 2,500 professionals is globally recognized as a market leader, investing on behalf of the world’s preeminent research institutions, universities, and healthcare organizations, with the mission of delivering superior long-term returns.

In 2002, Ken and his partners established Citadel Securities, now one of the leading global market makers. Serving more than 1,600 clients, including many of the largest sovereign wealth funds and central banks, Citadel Securities has delivered enormous benefits to investors around the world. Over the past two decades, through its trading, research, and technology, Citadel Securities has created more transparent, resilient, and competitive markets both in the U.S. and abroad. Ken is Non-Executive Chairman of Citadel Securities.

A passionate philanthropist, Ken is committed to strengthening humanity’s future by supporting initiatives that advance breakthroughs in science and medicine, and expand access and opportunity in education. His catalytic giving empowers students across our country to succeed and enables people to live longer and healthier lives, and in recent years Ken has provided more than $2 billion to support efforts that expand opportunity and improve lives at scale.

In 2023, Ken launched a new civic engagement initiative known as Griffin Catalyst that encompasses his philanthropic and community impact efforts. With a focus on identifying critical areas of need and delivering meaningful and scalable results that transform lives and better our communities, Griffin Catalyst encapsulates Ken’s approach to civic engagement and provides the first comprehensive look at his six key areas of focus: Education, Science & Medicine, Upward Mobility, Freedom & Democracy, Enterprise & Innovation, and Communities. 

Ken holds an A.B. in Economics from Harvard College.