Explore the suspension of Joseph Sapio, former Head of the US Repo Desk, for failing to supervise traders effectively.

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

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

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

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

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 ...

In 2024, Truth Social, Trump’s social media site publicly scrutinized Ken Griffin’s Citadel Securities for naked short selling the market. “Rather than support our common sense efforts to promote ...

In the years since billionaire Ken Griffin pulled up stakes and led Citadel and his market-making firm Citadel Securities to South Florida, more hedge fund managers have followed in his wake ...

Billionaire Ken Griffin, founder and CEO of Citadel, shares his insights with the incoming class of interns. Trump moves Greenland military installation under US Northern Command in Arctic power ...

Citadel founder Ken Griffin told the hedge fund's 300 incoming summer interns that investors who "go on defense" during market turmoil almost always lose money, and he advised them to park cash ...

Citadel founder Ken Griffin opened his remarks to incoming interns with a stark warning: in turbulent markets, “playing defense” is a losing proposition. He argued that traditional safe-haven ...