Griffin's Citadel had invested $2 billion in January into Melvin Capital Management LP, which was at the center of the GameStop Corp GME Short Squeeze. What Happened: Ken Griffin's Citadel LLC and ...

Despite headwinds, the hedge fund billionaire sees a tale of two markets, with bond traders anxious over US debt while equity ...

The hedge fund Citadel LLC and the market maker Citadel Securities say they had nothing to do with the app Robinhood suspending some trading in stocks that have recently experienced a surge in ...

Sources tell the Wall Street Journal that talks involving Blackstone Group and Ken Griffin's hedge-fund and securities-trading operations have been contentious, and it’s unclear if there’ll be a deal.

Editor’s note: This article has been updated to remove a reference to Ken Griffin’s political affiliations. Ken Griffin, founder of hedge‑fund giant Citadel LLC, told Stanford business students that ...

(Bloomberg) — An affiliate of Ken Griffin’s Citadel has acquired roughly $485 million in Yellow Corp. debt previously owned by Apollo Global Management Inc. and other senior lenders to the bankrupt ...

The most successful companies on Wall Street have been built by those with relentless ambition—and a strong wind at their back. Decades of deregulation helped growth-minded CEOs turn firms such as ...

OK, so—a group of individual investors collaborated via a Reddit message board to drive up the price of stock issued by the video game retailer GameStop. They did so in part because they were aware ...

Citadel LLC, one of the world’s largest hedge-fund firms, has hired one of the industry’s few female founders. Samantha Greenberg is closing her hedge fund, Margate Capital, to join Citadel. Ms.