Key Takeaways IBKR reported a 50.3% year over year and 10.6% sequential increase in option contracts to 150.2 million.Higher trading came from volatility, new products, onboarding efficiency and global expansion.Client equity rose 39.9% to $757.5B, while DARTs climbed 46.7% year over year in September.Last week, Interactive Brokers’ (IBKR) Electronic Brokerage segment reported a 50.3% year-over-year surge in total option contracts in September 2025. Compared with the previous month, option contracts grew 10 ...