Interactive Brokers’ net interest income rose in the third quarter as larger client balances outweighed lower yields. The gain more than offset a sequential decline in commission revenue, lifting net revenue slightly above its second-quarter level.
Separately, the board raised the quarterly dividend by 71%. On an adjusted basis, net revenue reached $1.87 billion, pretax income was $1.45 billion and diluted earnings were $0.67 per share. The adjusted pretax margin narrowed to 78% from 79% a year earlier.
| Metric | Q3 2026 | Q3 2025 | Change |
|---|---|---|---|
| Net revenue | $1.914B | $1.655B | +16% |
| Commission revenue | $602M | $537M | +12% |
| Net interest income | $1.154B | $967M | +19% |
| Pretax income | $1.496B | $1.312B | +14% |
| Diluted EPS | $0.69 | $0.59 | +17% |
On an adjusted basis, net revenue reached $1.87 billion, while pretax income came in at $1.45 billion and diluted earnings were $0.67 per share. The adjusted pretax margin narrowed to 78% from 79%.
Larger Balances Offset Lower Interest Margins
Average customer margin loans reached $104.0 billion during the quarter, an increase of 47% from $70.8 billion a year earlier. Average customer credit balances rose 25% to $176.6 billion.
The expansion in balances lifted net interest income even as the profitability of those assets declined. Interactive Brokers’ net interest margin narrowed to 1.99% from 2.16% year over year.
The annualised yield on customer margin loans fell to 4.25% from 4.60%, while the yield on segregated cash and securities decreased to 3.40% from 3.81%. The figures indicate that growth came from the volume of client funds and borrowing rather than higher rates.
- Interactive Brokers Adds Ether Staking with Fees Capped at 30% of Rewards
- Interactive Brokers Gives Korean Investors Global Stock Access Through Daol
- CFD Brokers Expand Trading Menus From Romanian Shares to Leveraged ETFs
Trading Activity Falls from Second-Quarter Levels
Total DARTs averaged 4.27 million during the quarter. That was 18% higher than a year earlier but 11% below the second quarter. Commission revenue consequently declined from $673 million in Q2 to $602 million.
Compared with the previous year, customer futures volume increased 13%, while stock and options volumes fell 24% and 1%, respectively. Average commission per cleared commissionable order declined 4% to $2.59.
Higher regulatory charges also contributed to the annual increase in commission revenue. Execution, clearing and distribution expenses rose 46% to $134 million, largely because of a $30 million increase in regulatory fees following a higher SEC Section 31 transaction fee rate.
Interactive Brokers passes those fees through to customers.
The broker finished September with 5.58 million customer accounts and $964.7 billion in customer equity, representing annual increases of 35% and 27%, respectively.
Interactive Brokers’ board increased the quarterly dividend from $0.0875 to $0.15 per share. The dividend is payable on December 14 to shareholders of record on December 1.
