Interactive Brokers' stock has gained nearly 500% over the past five years, rising from about $15 to $93 as of August 24, despite not being an AI company. The online brokerage grew customer accounts from 1.7 million at the end of 2021 to 5.19 million by the second quarter of 2026, a 34% year-over-year increase, while customer equity reached $930.3 billion, up 40%, and daily average revenue trades rose 36% to 4.82 million. Revenue grew 126% between 2021 and 2025, and net income more than tripled, driven by operating leverage from its highly automated infrastructure. The stock's valuation has expanded from a price-to-earnings ratio of roughly 18 to 20 five years ago to 37 today, meaning future returns will depend more on earnings growth than further multiple expansion.
Interactive Brokers Group IncStock gained nearly 500% in five years, with strong growth in accounts, revenue, and net income.
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