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 ...

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

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 ...

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

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

The hedge fund billionaire, who voted for Trump, said the Republicans’ “Big Beautiful Bill” “will unquestionably add several ...

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.

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

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