Trading firms including Jane Street and Citadel Securities generated $114bn in combined revenues last year, marking a significant shift in Wall Street's competitive landscape. Non-bank trading companies saw revenues jump 45% year-over-year, according to Crisil Coalition Greenwich, outpacing traditional banks' 13% growth in trading income.

The surge reflects how post-2008 regulations pushed banks away from proprietary trading, creating opportunity for specialist firms. These companies excel at using their own capital for bets while also facilitating retail trades and structuring exchange-traded funds. Market-making revenues reached $30.2bn, while proprietary trading and private investments hit $84.3bn, up nearly 60%.

Jane Street nearly doubled revenues to $40bn, benefiting from venture investments in companies like Anthropic and Thinking Machines Lab. In the $31tn Treasury market, trading firms have become increasingly important market makers over the past decade.

While trading firms outpace banks in specialized areas, banks maintain larger overall revenue shares due to broader service offerings. Some firms, including Citadel Securities, are expanding into higher-touch client services to compete directly with traditional Wall Street institutions.