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

Billionaire developer Ken Griffin owns several significant pieces of American history, including copies of the U.S.

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

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

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

Citadel boss Ken Griffin scoops up Abraham Lincoln-signed Emancipation Proclamation, 13th Amendment for $18.1M By Ariel Zilber Published June 30, 2025, 4:29 p.m. ET ...

Ken Griffin Pays Record $13.7 Million for Lincoln’s 13th Amendment Ending Slavery The hedge-fund billionaire also paid a record $43.2 million for a copy of the U.S. Constitution four years ago By ...

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