Ken Griffin’s Citadel reported $875.01 billion in U.S. securities on its latest 13F, a figure that makes the hedge fund’s ...

Ken Griffin's Citadel LLC. reportedly purchased most of Leopold Aschenbrenner's AI-focused hedge fund Situational Awareness' public equities portfolio, sparking discussion on social media, with ...

Editor in Charge of Market Structure at Reuters in New York where he leads the news agency's coverage of stock exchanges, and ...

Citadel Securities and Wolfe Research form a joint venture pairing equity execution with independent research, with Citadel ...

(Corrects September 21 story, paragraph 2, to say Situational Awareness fund sold most of its public equities portfolio to ...

The AI-focused fund, run by former OpenAI researcher Leopold Aschenbrenner, was forced to sell most of its public equities portfolio to Citadel Securities after a sharp sell-off in AI and chip stocks.

When rival hedge funds face catastrophic losses, billionaire investor Ken Griffin has a habit of identifying opportunities and showing up with a checkbook. Citadel's founder this week reprised his ...

In November 2025, Citadel Securities invested $200 million into the Kraken crypto exchange. Its affiliates also helped to lead a $500 million fundraise in Ripple, the company that issues XRP, at a $40 ...

The market maker pointed to the Treasury's plan to increase buybacks of government bonds. The US has tried to push bond yields lower in the past with mixed results. The US Treasury's attempts to keep ...

July 16 : Crypto.com said on Thursday that market maker Citadel Securities had invested $400 million in the crypto exchange at a $20 billion valuation, in its first-ever institutional fundraising ...