Interactive Brokers Daily Average Revenue Trades Surge 47%, Client Equity Soars

September marked a period of accelerated activity for Interactive Brokers Group as the firm recorded substantial growth across key trading and financial metrics.

Clients increased their trading volumes, equity holdings, and margin lending, reinforcing the brokerage’s expanding footprint in global electronic trading.

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Surge in Trading Volumes and Client Equity

Interactive Brokers reported an average of 3.864 million daily revenue trades in September, reflecting a 47% increase compared to the same month last year and an 11% rise from August 2025.

This jump underlines a rising engagement level among traders using IBKR’s automated platform. Alongside this, client equity soared to $757.5 billion, marking a 40% year-on-year increase and a 6% rise month-over-month, highlighting growing investment inflows and retained wealth on the platform.

Client margin loan balances rose to $77.3 billion, up 39% from last year and 8% from the previous month, indicating that traders are leveraging more capital for their positions. Credit balances, including $6.2 billion in insured bank deposit sweeps, also climbed by 33% annually to $154.8 billion.

Expanding Client Base and Trading Activity

The total number of client accounts reached 4.127 million, increasing 32% compared to September 2024 and growing 2% relative to August.

The net addition of new accounts was 111,900 in September; however, after accounting for the withdrawal of an introducing broker with nearly 39,000 accounts and $413.5 million in assets, the reported net growth adjusted to 73,100 accounts.

Interactive Brokers expects a further closure of around 2,900 accounts linked to this broker withdrawal by early October. Despite this, the average cleared daily trades (DARTs) per client was 203, showing sustained average activity across the client base.

Keep reading: Interactive Brokers Eliminates Fees for Singapore US Stock Trading

The average commission per cleared commissionable order, including exchange, clearing, and regulatory fees, was $2.71.

Breaking this down by product for September, stock trades averaged 1001 shares with a commission of $2.01 per order, equity options averaged 6.8 contracts at $3.95 per order, while futures, which include options on futures, averaged 3.1 contracts at $4.44 per order.

Market Transparency and Cost Efficiency

Interactive Brokers emphasized transparency by quantifying trading costs for IBKR PRO clients. The average U.S. Reg-NMS stock trade size was $20,606.

The total cost of executing and clearing Clearing Clearing is a general term that simply means many different things depending on the subject and related industry. Most commonly, this refers to the reciprocal exchange between banks of checks and drafts, and the settlement of the differences, or the total of claims settled at a clearinghouse. In finance and banking, the word clearing has different meanings depending on the more specific business model. Moving checks from the bank where they were deposited to the bank on which they were drawn. Th Clearing is a general term that simply means many different things depending on the subject and related industry. Most commonly, this refers to the reciprocal exchange between banks of checks and drafts, and the settlement of the differences, or the total of claims settled at a clearinghouse. In finance and banking, the word clearing has different meanings depending on the more specific business model. Moving checks from the bank where they were deposited to the bank on which they were drawn. Th Read this Term these stock trades stood at approximately 1.8 basis points of trade value, benchmarked against a daily volume-weighted average price. On a rolling twelve-month basis, this net cost averaged 2.9 basis points, illustrating the relative cost efficiency IBKR clients experience.

The company reported a mark-to-market loss of $195,000 on its U.S. government securities portfolio for the quarter ending September 30th. Additionally, its GLOBAL indicator—a performance measure reported in U.S. dollars—increased by 0.02% in September but declined by 0.25% over the entire third quarter.

Meanwhile, Interactive Brokers recently led a $104 million Series D funding round for crypto infrastructure startup Zerohash, which is now valued at $1 billion. The round also included investors like Morgan Stanley, SoFi, and Apollo-managed funds.

Interactive Brokers, which already uses Zerohash for crypto trading and custody services, plans to collaborate with the startup to launch a stablecoin Stablecoin Unlike other cryptocurrencies like Bitcoin and Ethereum, stablecoins are cryptocurrencies that have been designed to keep a stable value. Placing a greater emphasis on stability over volatility can be a huge draw for some investors. Many individuals can be turned off from large swings and uncertainty presented by cryptos relative to other traditional assets.Stablecoins control for this volatility by being pegged to another cryptocurrency, fiat money, or to exchange-traded commodities, including Unlike other cryptocurrencies like Bitcoin and Ethereum, stablecoins are cryptocurrencies that have been designed to keep a stable value. Placing a greater emphasis on stability over volatility can be a huge draw for some investors. Many individuals can be turned off from large swings and uncertainty presented by cryptos relative to other traditional assets.Stablecoins control for this volatility by being pegged to another cryptocurrency, fiat money, or to exchange-traded commodities, including Read this Term product, reflecting the broker’s growing involvement in digital assets.

• Interactive Brokers’ Client Equity Surges 38% as Daily Average Revenue Trades Remain Flat From July
• Interactive Brokers Eliminates Fees for Singapore US Stock Trading