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

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 ...

The hedge-fund billionaire also paid a record $43.2 million for a copy of the U.S. Constitution four years ago.

Citadel's flagship Wellington fund rose 15.1% last year. Since Citadel's inception in 1990, the firm produced an annualized ...

Ken Griffin just snapped up two more impressive pieces of U.S. history.

Citadel's Ken Griffin breaks Sotheby's record with bids for two Civil War-era documents. Crain’s Laura Turbay discusses with ...

Ken Griffin advises young graduates to read about their chosen fields. "If it's not interesting to you, you picked the wrong career. It's that simple," the billionaire said.

Citadel founder Ken Griffin paid $18.1 million for copies of the 13th Amendment and the Emancipation Proclamation signed by President Abraham Lincoln.

Hedge fund titan Ken Griffin ramped up his war of words with the Trump White House on Wednesday, blasting the president's so-called 'Big, Beautiful' tax bill for adding to Uncle Sam's eye-popping ...

Billionaire Ken Griffin, founder of $63 billion (in assets) Citadel hedge fund and market maker Citadel Securities, slammed the Trump Administration’s handling of the economy and the Republicans ...

Citadel founder Ken Griffin knocked the Trump administration for a series of moves he said would undoubtedly cause stagflation. Griffin, who’s notably criticized the president’s trade policies ...