Citadel Securities, a capital markets firm, and Jane Street, a liquidity provider and market maker, completed the investment in MultiLynq, a provider of electronic fixed income trading connectivity and integration solutions. Financial terms were not disclosed. "We're investing in MultiLynq because we've seen firsthand that their solutions have the potential to greatly streamline electronic trading. We look forward to growing alongside them, as their purpose-built fixed income offering uniquely positions them in this rapidly expanding industry," Matt Berger, Jane Street Global Head of Fixed Income.