Interactive Brokers Group, Inc. (IBKR) Shareholders & Insider Trades
Interactive Brokers shareholders at a glance
The largest holder of Interactive Brokers stock is Vanguard Capital Management LLC, with 28.3 million shares (6.42% of the company), worth about $2.76 billion as of September 25, 2026. The 10 largest holders together own 31.8%.
In Q2 2026, 1,181 institutional holdings reports listed 442.0 million shares worth $34.50 billion, up 16.3% in shares from Q1 2026.
Insiders reported 57 transactions in the last two years: 22 sales worth $126.33 million and 5 purchases. The newest one on file is from May 1, 2026 (Conkling Lori A, Director).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 1, 2026.
Interactive Brokers Group, Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Interactive Brokers shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Vanguard Capital Management LLC | 28.3 million | 6.42% | $2.8B |
| BlackRock Advisors LLC | 26.1 million | 5.92% | $2.5B |
| State Street Corporation | 19.4 million | 4.40% | $1.9B |
| Fidelity Management & Research Co. LLC | 11.8 million | 2.68% | $1.2B |
| Geode Capital Management LLC | 10.6 million | 2.41% | $1.0B |
| Greenwich Wealth Management LLC | 9.9 million | 2.25% | $965.0M |
| Invesco Advisers, Inc. | 9.7 million | 2.20% | $945.0M |
| Vanguard Portfolio Management LLC | 8.7 million | 1.98% | $849.0M |
| Two Sigma Investments LP | 8.3 million | 1.89% | $811.0M |
| Wellington Trust Co., NA | 7.4 million | 1.67% | $718.0M |
As of September 25, 2026.
Interactive Brokers institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,181 | 442.0 million | $34.5B |
| Q1 2026 | 1,055 | 380.0 million | $25.4B |
| Q4 2025 | 1,040 | 386.0 million | $24.9B |
| Q3 2025 | 979 | 391.0 million | $27.0B |
| Q2 2025 | 866 | 383.0 million | $21.2B |
| Q1 2025 | 805 | 95.2 million | $15.8B |
| Q4 2024 | 754 | 93.6 million | $16.6B |
| Q3 2024 | 620 | 97.1 million | $13.5B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Interactive Brokers insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Conkling Lori A | May 1, 2026 | Director | Purchase at price 79.64 per share. | $1,991 |
| Harris Lawrence E | Apr 28, 2026 | Director | Sale at price 76.93 per share. | $2.0M |
| Conkling Lori A | Apr 1, 2026 | Director | Purchase at price 68.38 per share. | $1,710 |
| Conkling Lori A | Mar 2, 2026 | Director | Purchase at price 69.21 - 73.21 per share. | $5,391 |
| Nemser Earl H | Jan 27, 2026 | Officer and Director | Sale at price 75.07 - 77.98 per share. | $11.8M |
| Nemser Earl H | Jan 23, 2026 | Officer and Director | Sale at price 76.81 - 78.14 per share. | $19.0M |
| Repetto Richard H | Dec 31, 2025 | Director | Stock Award(Grant) at price 64.31 per share. | $25,017 |
| Conkling Lori A | Dec 31, 2025 | Director | Stock Award(Grant) at price 0.00 - 64.31 per share. | $25,017 |
| Nemser Earl H | Dec 31, 2025 | Officer and Director | Stock Award(Grant) at price 0.00 - 64.31 per share. | $25,017 |
| Nemser Earl H | Dec 31, 2025 | Officer and Director | Stock Award(Grant) at price 64.31 per share. | $25,017 |
| Frank Thomas A J | Dec 31, 2025 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Brody Paul Jonathan | Dec 31, 2025 | Chief Financial Officer | Stock Award(Grant) at price 0.00 - 64.31 per share. | $25,017 |
Newest 12 of 57 insider transactions in the last two years.
Questions and answers
Who owns the most Interactive Brokers stock?
Vanguard Capital Management LLC, with 6.42% of the company (as of September 25, 2026). Next: BlackRock Advisors LLC (5.92%) and State Street Corporation (4.40%).
How many institutions own Interactive Brokers stock?
1,181 institutional holdings reports listed Interactive Brokers shares in Q2 2026, 442.0 million shares in all worth $34.50 billion.
Are Interactive Brokers insiders buying or selling the stock?
In the last two years insiders reported 22 sales and 5 purchases (57 transactions in all); the newest on file is from May 1, 2026.
