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.

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

Citadel's founder and CEO said that young graduates need to read about the domains they are in.

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

Citadel founder and CEO Ken Griffin told graduates there’s no shame in switching careers if they’re not truly interested in ...

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

Billionaire hedge funder Kenneth Griffin was the buyer of record-breaking copies of the 13th Amendment and the Emancipation Proclamation.

Billionaire Art Collector Ken Griffin Buys Lincoln's Handwritten Copy of 13th Amendment for $13.7 M. Billionaire Kenneth C.

Ken Griffin says reading textbooks is key to knowing if you're in the right job. If it's not interesting, it's the wrong career.

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.