Interactive Brokers (IBKR)
What the price implies
A reverse DCF: instead of guessing a fair value, it asks what growth today's price already assumes. How it works.
Fundamental grade
Five factors scored 1 to 9 from IBKR's latest numbers, weighted into one grade. It describes the business, not whether the stock is a buy.
Key numbers
Results from SEC filings
Fiscal years, from Interactive Brokers's 10-K filings. The deep dive has 15+ years, quarters and every line.
| Fiscal year | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Revenue | $2.7B | $3.1B | $4.3B | $5.2B | $6.2B |
| Net income | $308M | $380M | $600M | $755M | $984M |
| Free cash flow | — | — | — | — | — |
| EPS (diluted) | $0.81 | $0.94 | $1.42 | $1.73 | $2.22 |
| Operating margin | — | — | — | — | — |
Where the revenue comes from
Revenue by segments, fiscal 2019.
Superinvestors who own IBKR
From each investor's latest 13F filing (what a 13F shows). 8 of the investors we track hold it.
| Investor | Last quarter | Value | % of portfolio | Quarter |
|---|---|---|---|---|
| Andreas Halvorsen Viking Global Investors |
Added | $420M | 1.2% | Q2 2026 |
| Ron Baron Baron Capital (BAMCO) |
Added | $418M | 0.63% | Q2 2026 |
| Bryan Lawrence Oakcliff Capital Partners |
Held | $90M | 33.4% | Q2 2026 |
| Stephen Mandel Lone Pine Capital |
New position | $50M | 0.31% | Q2 2026 |
| Cliff Asness AQR Capital Management |
Trimmed | $18M | 0.01% | Q2 2026 |
| Joel Greenblatt Gotham Asset Management |
Trimmed | $10M | 0.02% | Q2 2026 |
| Mario Gabelli GAMCO Investors |
Trimmed | $1M | 0.01% | Q2 2026 |
| Will Nasgovitz Heartland Advisors |
Trimmed | $595,267 | 0.03% | Q2 2026 |
Insider buying
Open-market purchases by Interactive Brokers's executives and directors in the last 12 months, from SEC Form 4 filings. What insider buying tells you.
| Date | Insider | Shares | Price | Value |
|---|---|---|---|---|
| Oct 1, 2026 | Lori A Conkling Director |
25 | $85.42 | $2,136 |
| Sep 1, 2026 | Lori A Conkling Director |
25 | $94.53 | $2,363 |
| Apr 1, 2026 | Lori A Conkling Director |
25 | $68.38 | $1,710 |
| Jan 23, 2026 | Ro Khanna |
0 | $77.58 | — |
| Jan 23, 2026 | Ro Khanna |
0 | $77.58 | — |
| Oct 23, 2025 | Jill Bright |
400 | $65.95 | $26,380 |
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In the full deep dive
Questions
Are Interactive Brokers insiders buying the stock?
6 open-market insider purchases of IBKR in the last 12 months, from SEC Form 4 filings.
Which superinvestors own Interactive Brokers?
8 of the superinvestors Investingly tracks hold IBKR in their latest 13F, including Andreas Halvorsen, Ron Baron, Bryan Lawrence.
Prices and ratios as of Oct 7, 2026; statements from SEC filings. Information only, not investment advice. Superinvestor holdings come from 13F filings, which are filed up to 45 days after each quarter ends.