Prediction: Interactive Brokers Ends 2026 With More Than 6 Million Customer Accounts

Key Points Interactive Brokers ended August with 5.46 million customer accounts after growing the count 35% in a year. Reaching 6 million by Dec. 31 takes about 2.4% monthly growth, a slower pace than the company has posted since April. Second-quarter commission revenue rose 30% to a record $673 million as customers traded more. 10 stocks we like better than Interactive Brokers Group › Interactive Brokers (NASDAQ:IBKR) grew its customer-account count by another 143,000 in August. That put the automated global broker at 5.46 million accounts, up 35% from a year earlier, according to the monthly metrics update it published on Sept. 1. A total like that puts a round number within reach.