Billionaire investor Kenneth C Griffin runs one of the most successful hedge funds in the world. As the founder and CEO of ...

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

Griffin, who runs a $66 billion hedge fund, was able to navigate markets that turned turbulent in April after U.S. President Donald Trump announced "reciprocal" tariffs on dozens of countries. Citadel ...

Lobbyists for the law said it would protect trade secrets and invite high-paying companies to Florida.

Discover how Citadel Securities solidifies its dominance in market-making with a key acquisition from Morgan Stanley.

Citadel Securities acquires Morgan Stanley's electronic options market-making business, solidifying its industry dominance.

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 ...

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

Citadel Securities bought Morgan Stanley’s unit focused on electronic market-making for US equity options, expanding the firm ...

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