An internal company memo revealed the person is a neurologist who previously worked at Morgan Stanley and is a Harvard grad.

Zohran Mamdani wants Ken Griffin to pay more tax on his Central Park penthouse. We break down what it means for homeowners ...

The stock market has proven resilient in the face of President Donald Trump's aggressive trade war and conflict in the Middle ...

Billionaire developer and Palm Beach resident Ken Griffin's most recent purchases include rare copies of the Emancipation ...

Griffin paid a record $13.7M for the 13th Amendment and $4.4 million for the Emancipation Proclamation. Both documents were ...

Originally issued by Lincoln during the Civil War in 1863, the proclamation declared enslaved people in the Confederate ...

Citadel boss Ken Griffin scoops up Abraham Lincoln-signed Emancipation Proclamation, 13th Amendment for $18.1M By Ariel Zilber Published June 30, 2025, 4:29 p.m. ET ...

The hedge fund founder paid $13.7 million for a copy of the 13th Amendment and $4.4 million for the Emancipation Proclamation ...

Billionaire Ken Griffin, founder and CEO of Citadel, shares his insights with the incoming class of interns. Trump moves Greenland military installation under US Northern Command in Arctic power ...

Citadel founder Ken Griffin told the hedge fund's 300 incoming summer interns that investors who "go on defense" during market turmoil almost always lose money, and he advised them to park cash ...

Citadel founder Ken Griffin opened his remarks to incoming interns with a stark warning: in turbulent markets, “playing defense” is a losing proposition. He argued that traditional safe-haven ...

In the years since billionaire Ken Griffin pulled up stakes and led Citadel and his market-making firm Citadel Securities to South Florida, more hedge fund managers have followed in his wake ...