Who owns Interactive Brokers Group, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of IBKR from SEC Form 13F filings across 1,111 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 1,111 institutions disclosed 387.4M shares of Interactive Brokers Group, Inc. worth $33.76B — about 86.5% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
1,111
13F holders
$33.76B
value, 2026 filers
86.5%
of shares outstanding (387.4M sh)
209
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of IBKR's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 33.1M | $2.88B | 0.0% | 7.4% | +5.6% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 28.3M | $2.47B | 0.1% | 6.3% | +0.6% |
| 3 | STATE STREET CORP | 19.4M | $1.69B | 0.1% | 4.3% | +1.8% |
| 4 | FMR LLC | 11.8M | $1.03B | 0.0% | 2.6% | -5.4% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 10.6M | $925.5M | 0.0% | 2.4% | +1.9% |
| 6 | Greenwich Wealth Management LLC | 9.9M | $863.6M | 31.5% | 2.2% | 0.0% |
| 7 | Invesco Ltd. | 9.7M | $845.1M | 0.1% | 2.2% | +0.6% |
| 8 | VANGUARD PORTFOLIO MANAGEMENT LLC | 8.7M | $759.4M | 0.0% | 1.9% | -41.8% |
| 9 | TWO SIGMA INVESTMENTS, LP | 8.3M | $725.9M | 0.5% | 1.9% | +0.3% |
| 10 | WELLINGTON MANAGEMENT GROUP LLP | 7.4M | $642.5M | 0.1% | 1.6% | -24.5% |
| 11 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 6.4M | $554.1M | 1.7% | 1.4% | -36.4% |
| 12 | NORGES BANKNEW | 6.3M | $551.3M | 0.1% | 1.4% | new |
| 13 | Orbis Allan Gray Ltd | 6.1M | $528.3M | 1.8% | 1.4% | -0.8% |
| 14 | W1M Asset Management Ltd | 6.0M | $520.1M | 4.8% | 1.3% | +1.0% |
| 15 | BANK OF AMERICA CORP /DE/ | 6.0M | $518.2M | 0.0% | 1.3% | -4.4% |
| 16 | AMERICAN CENTURY COMPANIES INC | 5.6M | $485.9M | 0.2% | 1.2% | -2.8% |
| 17 | Ninety One UK LtdNEW | 5.3M | $457.7M | 1.0% | 1.2% | new |
| 18 | JPMORGAN CHASE & CO | 5.2M | $457.5M | 0.0% | 1.2% | -22.8% |
| 19 | MORGAN STANLEY | 5.1M | $447.9M | 0.0% | 1.1% | +8.0% |
| 20 | VIKING GLOBAL INVESTORS LP | 4.8M | $420.5M | 1.2% | 1.1% | +246.5% |
| 21 | BAMCO INC /NY/ | 4.8M | $418.4M | 0.6% | 1.1% | +18.8% |
| 22 | NEUBERGER BERMAN GROUP LLC | 4.6M | $401.3M | 0.3% | 1% | +23.3% |
| 23 | 1832 Asset Management L.P. | 4.3M | $377.8M | 0.2% | 1% | -2.5% |
| 24 | GOLDMAN SACHS GROUP INC | 4.2M | $361.8M | 0.0% | 0.9% | +29.0% |
| 25 | Egerton Capital (UK) LLP | 4.1M | $359.4M | 3.5% | 0.9% | -34.2% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.