Interactive Brokers: The broker most investors don’t know, yet it’s crushing the competition
When a central bank starts cutting interest rates, one nearly ironclad rule applies. Companies that live off the spread between interest received and interest paid find it harder to breathe, and their revenues shrink. Yet precisely in this environment, one global broker announced that its net interest income actually rose sharply. It wasn’t an accounting trick or a one-time effect, but the result of something that has been happening in its business for a while and that most investors underestimate.
Key points
The company achieved record revenue of $1.67 billion in the first quarter of 2026, with growth of 17 percent and a pre-tax margin around 77 percent, unmatched in the entire financial sector.
Net interest income rose 17 percent year on year to $904 million, despite the central bank cutting rates, which is the core of the whole resilience thesis.
The number of client accounts grew 34 percent year on year, and client assets exceeded $450 billion, with the company growing fastest in Europe and Asia.
Commissions reached a record $613 million, driven by a 53 percent increase in the daily number of charged trades.
The stock trades at roughly 28 to 33 times earnings, a premium over competitors like Charles Schwab, but significantly cheaper than the speculatively valued Robinhood.
More interesting than the number itself is the nature of the company that pulled it off. It’s not a colorful app luring beginners with commission-free trading and cryptocurrencies, but a technology-driven platform for the world’s most demanding traders and institutions. While competitors gather millions of small users and boast about their numbers, this broker takes the opposite path. It bets on fewer clients who, however, trade much more, hold higher balances, and generate several times higher revenue.
That’s the source of a profitability that seems almost out of place in the financial world and resembles a software company more than an exchange intermediary. The explanation lies in how the whole business is technically structured, and it is also the key to understanding why each new client adds substantially more to profit than it subtracts in costs.
Quality and growth of this level, however, come at a price, and in this case it is noticeable. The stock today trades at a significant premium over traditional brokers, and the market has priced in a good deal of optimism. So the question is not whether it is an exceptional business, because the numbers leave no doubt there. It is more this: when does paying for quality become overpaying, and what specifically would have to happen for today’s premium to prove justified?
And then there’s one more circumstance that many investors overlook, namely the way the company is structured ownership-wise and how much of the profit actually goes to the ordinary shareholder. Anyone unfamiliar with this peculiarity will be surprised why one of the key metrics looks surprisingly modest at first glance. So what lies behind the record margins, and is the current price still reasonable?
Finish the whole article on IBKR
And you also unlock fair value and more tools
Black membership: analyses, screener, newsletters and unlimited StockBot.