The European division of US broker-dealer Knight Capital has raised its stake in Equiduct, the pan-European retail trading platform, as the company looks to expand its presence in the European retail equities market.

Knight, which owns a minority stake in the platform, exercised an option to increase its stake in the platform in the second quarter this year. The company raised its shareholding 60% by adding to the overall capital of the platform, which is majority owned by Knight's rival Citadel Execution Services, a division of US broker-dealer Citadel Securities. Knight did not disclose the value of its investment.