Citadel expands into equities

Citadel Securities is pushing deeper into stock trading for big institutions, moving beyond the market-making business that made it one of Wall Street’s biggest liquidity providers. (bloomberg.com) Bloomberg reported on April 21 that the firm is targeting equity block trades for hedge funds, asset managers and pension investors, an arena long dominated by banks including JPMorgan Chase. Jamie Dimon’s 2026 shareholder letter, published April 6, named Citadel Securities among fast-growing competitors. (bloomberg.com) (jpmorganchase.com) Citadel Securities describes itself as a technology-driven market maker in equities, options, fixed income and foreign exchange, and says it provides liquidity to retail and institutional investors across global markets. On its website, the firm also points to its role in launching Members Exchange, or MEMX, an all-electronic U.S. stock exchange built with banks, broker-dealers and other market makers. (citadelsecurities.com 1) (citadelsecurities.com 2) A market maker stands ready to buy from sellers and sell to buyers, usually earning the spread between those prices. Block trading is different: firms work large stock orders for institutions that want to move size without pushing the price against themselves. (citadelsecurities.com) (bloomberg.com) That line is blurring as electronic trading firms use speed, pricing models and market-structure expertise to expand into businesses once controlled by bank trading desks. eFinancialCareers reported in 2025 that non-bank liquidity providers were already expanding into new asset classes to grow revenue. (efinancialcareers.co.uk) (bloomberg.com) The same hiring patterns are showing up in prediction markets, where exchanges and platforms are recruiting people with electronic-trading backgrounds. eFinancialCareers reported on April 21 that Kalshi and Polymarket are adding staff as the sector grows, with recruiters describing Kalshi as “a new player in the market for elite talent.” (efinancialcareers.co.uk) Kalshi says it is a Commodity Futures Trading Commission-regulated exchange for event contracts and listed 26 openings this week, including roles in engineering, markets, research, compliance and trading. Its careers page showed six engineering openings and one markets opening when indexed this week. (kalshi.com) (startup.jobs) Polymarket presents itself as a prediction market spanning politics, sports, finance, geopolitics and weather, and outside job listings this week showed openings including software engineering, product and payments roles. That mix points to a business that increasingly looks like a trading venue as much as a consumer app. (polymarket.com) (web3.career) Banks still have balance sheets, client relationships and capital-markets businesses that newer rivals do not. But Dimon’s decision to call out Citadel Securities by name, and Citadel’s decision to chase block stock trades, show where the next fight in electronic markets is moving. (jpmorganchase.com) (bloomberg.com)