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Citadel taps rival for COO of market-making unit

Kenneth Griffin's Chicago-based investment group is one of the top market-makers in the US – and is on the march in Europe

Citadel taps rival for COO of market-making unit
Photo: iStock

Citadel, Kenneth Griffin's Chicago-based investment group, has hired a new chief operating officer for its fast-growing market-making unit.

Scott Johnston, most recently COO at high-speed trading firm Tower Research Capital, is to take on the same role at Citadel Securities in April 2017, according to people familiar with the matter.

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