New York, NY – January 2, 2026 – Interactive Brokers Group, Inc. (Nasdaq: IBKR), a leader in automated global electronic brokerage, has released its Electronic Brokerage performance metrics for December 2025, showcasing a solid year-over-year growth in key areas despite a decline in monthly trading activity.

1. Brokerage Highlights

In December 2025, Interactive Brokers reported several significant metrics that underline the firm’s robust performance over the past year:

Daily Average Revenue Trades (DARTs): The firm recorded 3.384 million DARTs for the month, marking a 4% increase compared to December 2024, although this figure represents a 21% decrease from November 2025.

Client Equity: Ending client equity reached $779.9 billion, reflecting a 37% increase from the previous year and a modest 1% rise from the prior month.

Margin Loan Balances: Client margin loan balances were reported at $90.2 billion, a notable 40% increase year-over-year and an 8% uptick month-over-month.

Client Credit Balances: Ending client credit balances stood at $160.1 billion, including $6.4 billion in insured bank deposit sweeps, which is 34% higher than the previous year and 4% higher compared to the previous month.

Client Accounts: The firm ended December with 4.399 million client accounts, up 32% year-over-year and a 2% increase from November 2025.

2. Average Commission and Trade Metrics

Interactive Brokers also provided details on average commissions and trade sizes:

The average commission per cleared Commissionable Order was $2.57, encompassing exchange, clearing, and regulatory fees.

The average order size for different asset classes was summarized as follows:

Stocks: 829 shares at an average commission of $1.85.

Equity Options: 6.6 contracts at an average commission of $3.69.

Futures: 3.0 contracts at an average commission of $4.05.

Trade Execution Costs

In a bid to maintain transparency, Interactive Brokers quantified the all-in cost of trade execution for its IBKR PRO clients:

The total cost of executing and clearing U.S. Reg.-NMS stocks was approximately 3.0 basis points of trade money in December, with a rolling twelve-month average of 2.6 basis points.

3. Financial Performance Overview

In terms of broader financial activities, the company reported:

A mark-to-market gain of $0.6 million on its U.S. government securities portfolio for the quarter and a gain of $1.2 million for the year ended December 31, 2025.

The value of the company’s GLOBAL assets, which represent a basket of ten major currencies, increased by 0.28% in December and 2.049% for the year to date.

4. Conclusion

Despite a dip in daily trading activity from the previous month, Interactive Brokers Group's December performance metrics demonstrate a strong year-over-year growth trajectory across several key indicators. With a significant increase in client equity, margin loan balances, and client accounts, the firm continues to solidify its position as a leading automated brokerage service provider.

For more detailed metrics and historical data, the full multimedia release can be found on Interactive Brokers' official website.

Original press release