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

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

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

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

Ken Griffin bought an Abraham Lincoln–signed copy of the 13th Amendment, for $13.7 million, and the Emancipation Proclamation ...

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

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

A summer reading list for young entrepreneurs and those early in their careers, recommended by business leaders like Bill ...

Billionaire Kenneth C. Griffin has been revealed as the winner of last week's auction at Sotheby's for President Abraham ...

Griffin reportedly plans to lend his copies of the Thirteenth Amendment and the Emancipation Proclamation to a US institution ...

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