Interactive Brokers Group (IBKR) is back in focus after reporting record first quarter 2026 net revenues and profits, supported by higher trading volumes, commission and net interest income, and rising client accounts.

The earnings and dividend news land after a sharp run, with a 30 day share price return of 11.56% and year to date share price return of 13.97%, while the 1 year total shareholder return of 81.98% points to strong longer term momentum.

If the recent move in brokers has you thinking bigger, now is a good time to widen your watchlist with the 19 top founder-led companies

Yet with IBKR trading below some analyst targets and screens flagging an intrinsic value gap, the key question now is simple: is this still an underappreciated broker, or is the market already pricing in its next leg of growth?

Most Popular Narrative: 408.1% Overvalued

According to the most followed narrative, IBKR's fair value sits at $15.08 compared with a last close of $76.62, a wide gap that frames the debate around how sustainable its current profitability and growth profile might be.

Interactive Brokers (NASDAQ: IBKR) reported another standout quarter, reinforcing its position as one of the most operationally efficient brokerages in global finance. For Q3 2025, the company posted GAAP net revenues of $1.655 billion, up from $1.365 billion in the same quarter last year. Adjusted net revenues totaled $1.61 billion. GAAP diluted earnings per share rose to $0.59, compared to $0.42 a year earlier. Most strikingly, the firm delivered a pre-tax profit margin of approximately 79 percent, a level rarely matched in the industry, and more than double that of many legacy brokers.

Want to see how that kind of profitability feeds into such a low fair value estimate? The narrative leans heavily on specific growth, margin and discount rate assumptions that sharply constrain what future earnings are worth on paper.

Result: Fair Value of $15.08 (OVERVALUED)

However, this view could be challenged if interest rate driven net interest income weakens, or if competitive pressure erodes trading volumes and IBKR’s high margins.

Another Take: Multiples Point the Other Way

That 408.1% overvaluation call sits awkwardly next to current market checks. At a P/E of 32.9x, IBKR is below the US Capital Markets industry at 42x, yet above both its peer average of 22.8x and a fair ratio of 19.5x that the market could move toward over time.

This mix of discount and premium suggests valuation risk cuts both ways. Which reference point do you treat as your anchor: the sector, peers, or the fair ratio? See what the numbers say about this price — find out in our valuation breakdown.

Next Steps

With such mixed signals on value and quality, do not sit on the fence. Review the numbers for yourself and weigh up the 3 key rewards and 1 important warning sign

Looking for more investment ideas?

If IBKR has sharpened your focus, do not stop here. Use the screener to spot other opportunities that could suit your goals just as well.

• Target resilience by reviewing companies that appear in the 72 resilient stocks with low risk scores and see which ones match your comfort with volatility.
• Hunt for quality at a potential discount by scanning the 56 high quality undervalued stocks and compare how their metrics stack up against IBKR.
• Aim for staying power by researching companies in the solid balance sheet and fundamentals stocks screener (42 results) so you are not relying on just one name for financial strength.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.