Interactive Brokers Group, Inc.
IBKR- Exchange
- Nasdaq
- Industry
- Security Brokers, Dealers & Flotation Companies
- SEC CIK
- 0001381197
In the last 90 days, Interactive Brokers Group, Inc. insiders filed 3 open-market purchases and 0 sales; 1,119 institutions reported holding it in 13F filings for Q2 2026, worth $33.7B in total; 3 superinvestors hold it, including Viking Global Investors and Lone Pine Capital.
Holders of 5% or more of IBKR
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Interactive Brokers Group, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 13G | 7.30%32.5M shares | New | Apr 30, 20261 filing | Apr 30, 2026 | SEC |
| BlackRock, Inc. | 13G/A | 6.20%27.6M shares | −3.30 ppfrom 9.50% | Feb 5, 20252 filings | Oct 17, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
20 Schedule 13D and 13G filings on Interactive Brokers Group, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Apr 30, 202610:43 AM ET | Vanguard Capital Management LLC | 13G | 7.30%32.5M shares | New | Mar 31, 2026 | SEC |
| Mar 27, 20269:51 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −11.40 ppfrom 11.40%Below 5% | Mar 13, 2026 | SEC |
| Nov 7, 20256:06 PM ET | Bares Capital Management, Inc. | 13G/A | – | – | Oct 31, 2025 | SEC |
| Oct 17, 20256:13 PM ET | BlackRock, Inc. | 13G/A | 6.20%27.6M shares | −3.30 ppfrom 9.50% | Sep 30, 2025 | SEC |
| Sep 8, 202511:06 AM ET | Vanguard Group Inc | 13G/A | 11.40%50.8M shares | – | Aug 29, 2025 | SEC |
| Feb 14, 202510:01 AM ET | Orbis Investment Management Ltdand 1 other | 13G/A | 4.80%5.28M shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 5, 20251:23 PM ET | BlackRock, Inc. | 13G/A | 9.50%10.3M shares | – | Dec 31, 2024 | SEC |
| Feb 14, 2023 | Kayne Anderson Rudnick Investment Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Select Equity Group, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Aug 4, 20224:23 PM ET | IBG Holdings LLC | 13D/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Kayne Anderson Rudnick Investment Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Bares Capital Management, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Select Equity Group, L.P. | 13GOld format | – | New | – | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 2, 20227:11 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Bares Capital Management, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2021 | Kayne Anderson Rudnick Investment Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 29, 20219:57 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Interactive Brokers Group, Inc. shares.
No Form 144 notices for Interactive Brokers Group, Inc. are on file.