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Citadel Securities Expands an Already Dominant Options Business

  • Firm has started trading U.S. stock options for institutions
  • Market maker says it handles about 25% of trading in industry
Ken Griffin
Ken GriffinPhotographer: Patrick T. Fallon/Bloomberg

Ken Griffin’s Citadel Securities, already a giant in trading U.S. stock options, has a plan to gobble up even more market share in this key derivatives business.

The market maker has assembled a seven-person team, led by former Deutsche Bank AG Managing Director David Silber, to win order flow from institutional investors. Launched in January, the venture buys and sells exchange-traded options tied to individual U.S. stocks and equity indexes on behalf of those customers.