Citadel Securities, a unit of Citadel LLC in Chicago, has fired about 10 percent of its staff.
Jamey Thompson, co-head of Citadel LLC’s global credit group, is leaving the $15 billion hedge-fund firm after five years.
Steve Weller, co-head of Citadel LLC’s global equities group, left after more than a decade at the hedge fund run by Kenneth Griffin, according to two people familiar with the matter.
Patrik Edsparr , chief executive officer of Citadel Investment Group LLC’s securities unit, was asked to leave the firm, seven months after Ken Griffin picked him for the position.
Ken Griffin, the billionaire hedge- fund manager who’s captured almost 20 percent of trading in equity options through his market-making business, is taking aim at the global swaps industry.