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

In July 2024, Griffin purchased a late Jurassic-era stegosaurus skeleton for a record-setting $44.6 million. Griffin has ...

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.

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

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 ...

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

What's trending: Michelin Guide in Philadelphia, South Philly Crossing guard and more 02:10. Citadel CEO Ken Griffin believes American prosperity is a testament to the power of the Constitution.