Interactive Brokers Posts Strong May Metrics as Client Accounts Climb 32%

Interactive Brokers experienced a 47% year-over-year increase in daily average revenue trades (DARTs) in May 2026. The company integrated AI trading capabilities with Claude and saw strong performance metrics. Interactive Brokers also enabled agentic trading through Claude integration, showcasing its push for AI-driven trading experiences.

Interactive Brokers reported strong brokerage metrics for May 2026, with client accounts reaching roughly 3.79 million, up about 32% from a year earlier. Ending client equity rose to approximately $628 billion, a 29% year-over-year increase, underscoring continued inflows to the electronic brokerage.

Daily average revenue trades (DARTs) climbed sharply from the prior year on elevated retail and institutional activity, though volumes eased from April as market volatility moderated. Client margin loan balances of about $61 billion and credit balances near $135 billion point to engaged, active account holders.

The steady account growth and rising client equity position IBKR to benefit from net interest income on client balances, a key earnings driver in the current rate environment. Investors will watch whether trading volumes reaccelerate into the summer and how sustained account additions translate into the next quarterly results.

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