Interactive Brokers (Nasdaq: IBKR), an automated global electronic broker, today announced that its clients outperformed the S&P 500 Index in 2025, reflecting the benefits of cost efficiency, execution quality, and broad access to global markets. In 2025, Interactive Brokers’ individual clients achieved an average return of 19.20%, compared with the 17.9% return of the S&P 500 Index. During the same period, Interactive Brokers’ hedge fund clients achieved an average return of 28.91%, ...