IBKR’s third-quarter results show different drivers behind commissions and interest
The broker reports USD 1.91 billion in GAAP net revenue. Its business mix requires separating commission income, net interest income and adjusted financial measures.
For brokerage-industry analysis, revenue growth is not one operating variable. Commission activity and the interest business can respond to different balances, pricing and customer behaviour. Reading net revenue as trading commissions alone would misstate the reported mix.
What to check before drawing a conclusion
Use the issuer’s reconciliation when discussing adjusted figures and keep GAAP amounts visible. Identify the unit in each table: dollars, accounts and daily-average trades cannot be combined as if they were the same quantity. Retain the dated release because the linked latest-results endpoint may later update.
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Original WFN vector illustrationWFN · 21 October 2026
Editorial noteSource-based explanation with original WFN analysis. Historical records retain their dates; numerical examples are illustrative. The original vector illustration is conceptual and is not documentary evidence.
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What is on the record?
Primary-source explainer
Primary-source explainer
Primary record / reference periodIssuer Q3 2026 release dated 15 October 2026; quarter ended 30 September
The linked source supports the documented record; WFN interpretation and illustrative examples are separate.
The broker reports USD 1.91 billion in GAAP net revenue. Its business mix requires separating commission income, net interest income and adjusted financial measures.
For brokerage-industry analysis, revenue growth is not one operating variable. Commission activity and the interest business can respond to different balances, pricing and customer behaviour. Reading net revenue as trading commissions alone would misstate the reported mix.
Similarly, a quarterly activity measure can increase against the prior year while decreasing against the preceding quarter. Those observations are compatible. A headline saying activity rose needs to name the comparator rather than imply that every comparison improved.
03 · REVIEW POINTS
What to check before drawing a conclusion
Use the issuer’s reconciliation when discussing adjusted figures and keep GAAP amounts visible. Identify the unit in each table: dollars, accounts and daily-average trades cannot be combined as if they were the same quantity. Retain the dated release because the linked latest-results endpoint may later update.
WFN treats these as issuer-reported results, not independently verified execution quality or a recommendation to buy the shares. Further industry comparisons need matching periods and definitions, plus evidence beyond a single company’s reported growth.
