Interactive Brokers Group, Inc. (IBKR) shares slipped 1.10% to $87.03 on Monday after the broker released its July performance metrics. Daily Average Revenue Trades, or DARTs, declined 16% from June, even as the company reported a record client base. The monthly pullback points to a summer slowdown in trading activity across the platform — a seasonal pattern common among retail and institutional brokers during the July–August period.

DARTs Rise Year Over Year, But Ease From June

IBKR reported 4.426 million Daily Average Revenue Trades in July, up 27% from a year earlier. That total was down 16% from June, indicating a seasonal drop in trading intensity. The annual increase, however, underscores continued demand for the broker's electronic trading platform. DARTs are a closely watched metric in the brokerage industry because they directly correlate with commission and execution revenue, making monthly changes a key signal for analysts tracking near-term earnings trends.

Client accounts increased to 5.317 million, up 34% from the same period last year and 3% from June. The growth rate outpaces most large U.S. brokerage peers, reflecting IBKR's appeal to cost-conscious active traders and international clients. Average commissionable orders generated $2.56 in fees, including exchange and regulatory costs. Stock trades averaged 582 shares at $2.13 per order, while equity options averaged 5.9 contracts at $3.42.

Futures trading averaged 2.8 contracts per order, with a commission of $3.95. Exchange and clearing fees accounted for roughly 54% of those futures commissions. Annualized average cleared DARTs reached 180 per client account, reflecting continued engagement despite the monthly decline.

Client Balances Show Mixed Monthly Movement

Ending client equity reached $906.7 billion in July, up 32% from a year earlier. The total, however, fell 3% from June, mirroring the broader slowdown in trading volume. Margin loan balances followed a similar pattern, rising 49% year over year but falling 7% month over month to $100.7 billion. The year-over-year surge in margin lending reflects elevated leverage appetite during a period of strong market gains, while the monthly decline tracks reduced positioning into the quieter summer weeks.

Client credit balances totaled $180.5 billion, including $6.3 billion in insured bank deposit sweeps. That figure was up 25% from last year, though it edged down 1% from June. Taken together, the figures suggest clients pulled back activity slightly after a strong June.

IBKR also declared a cash dividend of $0.087 per share, with an ex-dividend date set for Sept. 1, 2026. The payout adds a steady return component for shareholders alongside the company's growth metrics.

Currency Basket and Trading Costs Provide Additional Context

The GLOBAL, IBKR's basket of 10 major currencies, rose 0.26% in July when measured in U.S. dollars. The company said the currency diversification tool reflects its strategy for managing net worth internationally. The gain contributed modestly to comprehensive income for the period.

IBKR PRO clients paid about 4.0 basis points in total trading costs during July. That compares with a 2.5 basis point average over the trailing 12 months. The increase suggests execution costs ticked higher even as commissions and fees remained relatively stable. The divergence between higher execution costs and stable commissions is worth monitoring in coming months, as widening spreads or volatility-driven slippage could affect the all-in cost clients experience on the platform.

Average U.S. Reg-NMS stock trades totaled $23,449 in July, based on the company's trade money calculations. IBKR said the metric is intended to help clients and analysts gauge the true cost of executing trades through the platform. The company continues to publish the data each month for transparency.