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

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

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

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 ...

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

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

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

As traditional financial institutions warm up to blockchain, a recent funding round reveals how the Miami-based market mover ...

The Citadel founder, a vocal critic of Illinois taxes, has the largest property tax assessment among homeowners in Palm Beach, Florida.