Ken Griffin Businesses: What Company Does Ken Griffin Own?

American investor, Ken Griffin, owns Citadel LLC is an American multinational hedge fund and financial services company.

Griffin, 53, began trading in 1987 from his Harvard dorm, installing a satellite dish on the roof to get real-time stock quotes.

He founded the hedge fund Citadel LLC in 1990, which today manages over $39 billion in assets.

Griffin is among the most successful executives in the history of Wall Street. Forbes magazine recently estimated his wealth at $26.5bn, making him the richest individual to be publicly linked with the Chelsea auction so far.

After graduating in 1989, Griffin moved to Chicago to work with Frank Meyer, founder of Glenwood Capital Investments. Meyer allotted $1 million of Glenwood capital for Griffin to trade and Griffin made 70% in a year.

A year later, in 1990, Griffin founded Citadel LLC, with assets under management of $4.6 million, aided by contributions from Meyer. His funds made 43% in 1991 and 40% in 1992.

In the early 2000s, Griffin founded market maker Citadel Securities.

In 2003, aged 34, Griffin was the youngest self-made individual on the Forbes 400 with an estimated net worth of $650 million.