Interactive Brokers Trading Volume Rose Year-Over-Year

Clients conducted 4.111 million daily trades in September as market activity shifted.

Updated on Oct. 1, 2026 in Economic Indicators

Isometric editorial illustration of a metallic architectural structure, representing institutional scale in financial trading infrastructure. — Interactive Brokers processed 4.111 million daily average revenue trades in September, a 6% increase in volume compared to the same month last year. AI Illustration. Upload story photo >

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Interactive Brokers processed 4.111 million daily average revenue trades (DARTs) in September 2026. This reflects a 6% increase in trading activity compared to September 2025.

Why it matters

The firm's operating metrics offer a snapshot of retail and institutional investor activity levels. This growth in trading volume coincided with a total client base of 5.576 million accounts.

Interactive Brokers recorded 4.111 million daily average revenue trades in September 2026, a 6% increase over the same month in 2025. During this period, the average commission per cleared commissionable order stood at $2.57.

The players

Interactive Brokers

A global brokerage firm providing investment services, trading platforms, and margin lending to millions of individual and institutional client accounts.

The details

The firm reported ending client equity of $964.7 billion and margin loan balances of $105.2 billion as of September 2026. These figures, alongside $186.2 billion in client credit balances and $6.4 billion in insured bank deposit sweeps, illustrate the scale of capital currently managed within the platform's 5.576 million accounts.

September 2025: DARTs were 6% lower than the volume recorded in September 2026.
August 2026: DARTs were 4% higher than the volume recorded in September 2026.
September 2026: Interactive Brokers registered 4.111 million daily average revenue trades.

Money Landscape

The firm's latest report tracks with the historical monthly operating metric reports published by Interactive Brokers. These disclosures provide a window into how active retail and institutional investors manage their portfolios across various market cycles.

These metrics highlight the level of market participation among investors using digital brokerage platforms. Individuals should periodically review their own portfolio activity and commission costs with a financial professional to ensure their trading strategy remains cost-effective.

The takeaway

Rising trade volumes across major brokerages can often signal higher market engagement or volatility. Investors should review their brokerage statements to understand the impact of commission structures on their total portfolio returns.