Citadel is drawing hundreds of employees from Chicago as it bets on a community-focused, in-office workplace strategy.

"When you sit in those circles, when you sit on those committees, you learn about how to run this kind of business," one ...

The company has added 126,000 square feet in the Loop tower as it renovates its namesake skyscraper a block away.

Other investors include BlackFin Tech, AlbionVC, HSBC, Illuminate Financial, ING and neosfer; investment follows TransFICC ...

Citadel Securities’ proposal to process trades for a swath of banks is taking shape behind the scenes, focusing on products ...