Ken Griffin Net Worth

Ken Griffin has an estimated net worth of $56.6 billion, according to Forbes Real-Time Billionaires, Ken Griffin profile (figures as of October 20, 2026). That is up from $11.7 billion in 2019.

Ken Griffin is an American hedge fund manager, entrepreneur, and investor. He is best known as the founder and leader of Citadel, a hedge fund firm in Miami. He also owns Citadel Securities, one of the biggest market makers in the United States. Griffin began trading while he was at Harvard in 1987, when he set up a satellite dish on his dorm roof to get real-time stock quotes. That early start became the base for his career in finance.

His wealth comes mainly from building Citadel and Citadel Securities. Griffin founded Citadel in 1990 after moving to Chicago in 1989 to work with Frank Meyer at Glenwood Capital Investments. Citadel started with $4.6 million in assets under management. In the early 2000s, he also launched Citadel Securities. Over time, both businesses grew into major Wall Street firms, turning Griffin into one of the best-known self-made figures in finance.

How Ken Griffin makes money

Griffin made his name by creating Citadel, a hedge fund firm that manages $77 billion in assets. He founded it in 1990, after first trading from his Harvard dorm in 1987. Citadel has produced $90 billion in net gains since it began, according to LCH Investments. That record has helped make it the world's most profitable hedge fund. Griffin is the founder, chief executive officer, co-chief investment officer, and 80% owner of the firm.

A second big source of wealth is Citadel Securities. Griffin owns the market-making business, which is one of Wall Street's biggest firms in that field. It is responsible for one of every four stock trades in the U.S. The company added another large business line next to the hedge fund and gave Griffin exposure to heavy trading volume in American markets. Together, Citadel and Citadel Securities account for most of his fortune in finance and investments.

Forbes net worth timeline

Forbes estimated Griffin's fortune at $11.7 billion in 2019, then $27.2 billion in 2022, and $49.8 billion in 2026. That rise tracks the expansion of Citadel and Citadel Securities over those years. Citadel kept building its position as a giant hedge fund, while Citadel Securities remained a major market maker. Forbes places him in Finance & Investments and describes him as self-made, which fits the way his fortune was built through companies he started and still runs.

The latest Forbes figure is $56.6 billion on its real-time billionaires tracker as of October 20, 2026. That estimate comes after years of growth at his firms and the scale they reached in trading and asset management. Citadel manages $77 billion in assets, and Citadel Securities plays a central role in U.S. stock trading. Griffin has also given some $2.7 billion to philanthropic causes, but his wealth still rests mainly on the value and earnings power of those businesses.