Who owns IBKR
Institutions that file 13Fs hold 86% of the shares
Shares they hold, quarter on quarter
+2.3%
196 new, 380 added, 366 cut, 84 sold out
Top 10 holders
38%
of the shares institutions hold
A 13F lists the long positions of managers with more than $100M in US stocks. It shows the last day of a quarter and is filed up to 45 days later. Two managers can report the same shares, so totals can count some shares twice.
Two kinds of filings agree
Smart money agrees
13F: Andreas Halvorsen added +246%, Stephen Mandel new in the quarter ending Jun 30, 2026.
Form 4: Conkling Lori A (Director) bought $15K in the open market since 2026-04-01.
Institutional owners
The 25 biggest holders
| Holder | Shares | Value | % of company | From Mar 31, 2026 |
|---|---|---|---|---|
| BlackRock, Inc. | 33.13M | $2.9B | 7.30% | Added +5.6% |
| VANGUARD CAPITAL MANAGEMENT LLC | 28.35M | $2.5B | 6.25% | Added +0.6% |
| STATE STREET CORP | 19.44M | $1.7B | 4.28% | Added +1.8% |
| FMR LLC | 11.83M | $1.0B | 2.61% | Reduced -5.4% |
| GEODE CAPITAL MANAGEMENT, LLC | 10.64M | $925.5M | 2.34% | Added +1.9% |
| Greenwich Wealth Management LLC | 9.92M | $864K | 2.19% | Held |
| Invesco Ltd. | 9.71M | $845.1M | 2.14% | Added +0.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 8.72M | $759.4M | 1.92% | Reduced -41.8% |
| TWO SIGMA INVESTMENTS, LP | 8.34M | $725.9M | 1.84% | Held |
| WELLINGTON MANAGEMENT GROUP LLP | 7.38M | $642.5M | 1.63% | Reduced -24.5% |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 6.37M | $554.1M | 1.40% | Reduced -36.4% |
| NORGES BANK | 6.33M | $551.3M | 1.40% | New |
| Orbis Allan Gray Ltd | 6.07M | $528.3M | 1.34% | Reduced -0.8% |
| W1M Asset Management Ltd | 5.98M | $520.1M | 1.32% | Added +1.0% |
| BANK OF AMERICA CORP /DE/ | 5.95M | $518.2M | 1.31% | Reduced -4.4% |
| AMERICAN CENTURY COMPANIES INC | 5.58M | $485.9M | 1.23% | Reduced -2.8% |
| Ninety One UK Ltd | 5.26M | $457.7M | 1.16% | New |
| JPMORGAN CHASE & CO | 5.19M | $457.5M | 1.14% | Reduced -22.8% |
| MORGAN STANLEY | 5.15M | $447.9M | 1.13% | Added +8.0% |
| VIKING GLOBAL INVESTORS LP | 4.83M | $420.5M | 1.06% | Added +246.5% |
| BAMCO INC /NY/ | 4.81M | $418.4M | 1.06% | Added +18.8% |
| NEUBERGER BERMAN GROUP LLC | 4.60M | $401.3M | 1.01% | Added +23.3% |
| 1832 Asset Management L.P. | 4.34M | $377.8M | 0.96% | Reduced -2.5% |
| GOLDMAN SACHS GROUP INC | 4.16M | $361.8M | 0.92% | Added +29.0% |
| Egerton Capital (UK) LLP | 4.13M | $359.4M | 0.91% | Reduced -34.2% |
Show the other 15 holders
This quarter
Who bought and who sold the most shares
Bought the most shares
- NORGES BANK +6.33M, new
- Ninety One UK Ltd +5.26M, new
- VIKING GLOBAL INVESTORS LP +3.44M
- BlackRock, Inc. +1.75M
- JANE STREET GROUP, LLC +1.58M
- AGF MANAGEMENT LTD +1.45M, new
- TD Asset Management Inc +1.18M
- UBS Group AG +1.14M
- D. E. Shaw & Co., Inc. +1.11M
- Qube Research & Technologies Ltd +1.07M
Sold the most shares
- Cantillon Capital Management LLC -10.73M
- VANGUARD PORTFOLIO MANAGEMENT LLC -6.26M
- KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC -3.65M
- WELLINGTON MANAGEMENT GROUP LLP -2.39M
- Egerton Capital (UK) LLP -2.15M
- JPMORGAN CHASE & CO -1.54M
- Ensign Peak Advisors, Inc -961K
- FMR LLC -673K
- WELLS FARGO & COMPANY/MN -616K
- JACOBS LEVY EQUITY MANAGEMENT, INC -532K
Superinvestors
Superinvestors holding IBKR
| Investor | Quarter | Shares | Value | % of portfolio | Last quarter |
|---|---|---|---|---|---|
| Andreas Halvorsen Viking Global Investors | Jun 30, 2026 | 4.83M | $420.5M | 1.20% | Added +246.5% |
| Stephen Mandel Lone Pine Capital | Jun 30, 2026 | 578K | $50.3M | 0.31% | New |
| William von Mueffling Cantillon Capital Management | Jun 30, 2026 | 518K | $45.1M | 6.78% | Reduced -95.4% |
More than 5%
13D filings: owners who may push for change
No Schedule 13D about IBKR in the last year.