Ken Griffin is the founder and CEO of Citadel, one of the most successful hedge funds globally. He started trading while in college and has since built Citadel into a firm managing over $50 billion in assets. Griffin is known for his philanthropic contributions to education and the arts. Citadel's innovative trading strategies have made Griffin one of the wealthiest individuals in the finance industry.

https://en.wikipedia.org/wiki/Kenneth_C._Griffin