Citadel and Citadel Securities, the financial firms founded and controlled by Chicago billionaire Ken Griffin, plan to open an office in Paris, expanding their reach in Europe. Citadel, a hedge ...

Citadel Securities is to expand its market-making service, offering US Treasuries and credit default swaps to European investors for the first time. It comes amid widespread regulatory changes to the ...

The details are still emerging about the individual roles that dozens of countries across Europe and Asia played in bringing down the estimated 1,400 botnets that were part of the Citadel operation.

US hedge fund Citadel and market maker Citadel Securities will open a new office in Paris in a bid to extend the institution’s longstanding presence in Europe. The new office, which is subject to ...

The details are still emerging about the individual roles that dozens of countries across Europe and Asia played in bringing down the estimated 1,400 botnets that were part of the Citadel operation.