Stock markets have rebounded worldwide from the shock caused by President Donald Trump's tariff proposals.

This year, it passed UBS to become the largest of “dark pools”—those off-exchange platforms where institutions can trade ...

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

Billionaire Ken Griffin just broke the auction sales record for any document signed by President Abraham Lincoln. The Citadel ...

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

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

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

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

Citadel CEO Ken Griffin gives $15M and loans rare founding documents to the National Constitution Center for America’s 250th anniversary.

Ken Griffin announced Tuesday that he will lend his first-edition copy of the Constitution to the National Constitution Center in Philadelphia for a public exhibit dedicated to the founding ...

Billionaire hedge fund manager and entrepreneur Ken Griffin continues to build his real estate portfolio, buying and selling properties across the globe. But not just any property will do. Griffin ...

GOP donor Ken Griffin suggested the value of the U.S. dollar has significantly deteriorated compared to the euro in the last month under the thumb of President Trump’s latest tariff hike.