Interactive Brokers Group, Inc.
Total Trades
180
Buys
1
Sells
179
Largest Trade
$1M+
Insiders
7
Institutional Funds
832
Inst. Value
$1M+
Activist Filings
18
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Nemser Earl H | Vice Chairman | SELL | $1M+ | 155K | $75.84 | Jan 28, 2026 |
| Nemser Earl H | Vice Chairman | SELL | $1M+ | 245K | $77.43 | Jan 26, 2026 |
| Harris Lawrence E | Director | SELL | $500K+ | 11K | $69.00 | Oct 31, 2025 |
| Harris Lawrence E | Director | SELL | $500K+ | 14K | $69.45 | Oct 29, 2025 |
| Bright Jill | Director | BUY | $15K–$50K | 400 | $65.95 | Oct 27, 2025 |
| Harris Lawrence E | Director | SELL | $1M+ | 30K | $67.86 | Oct 27, 2025 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 21K | $68.11 | Oct 1, 2025 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 31K | $65.34 | Sep 29, 2025 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 33K | $65.09 | Sep 25, 2025 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 66K | $64.46 | Sep 23, 2025 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 223K | $63.54 | Sep 19, 2025 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 195K | $62.68 | Sep 17, 2025 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 210K | $63.62 | Sep 15, 2025 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 212K | $62.19 | Sep 11, 2025 |
| Nemser Earl H | Vice Chairman | SELL | $1M+ | 40K | $66.38 | Aug 1, 2025 |
| Nemser Earl H | Vice Chairman | SELL | $1K–$15K | 100 | $65.90 | Jul 30, 2025 |
| Nemser Earl H | Vice Chairman | SELL | $1M+ | 10K | $105.94 | Feb 23, 2024 |
| Nemser Earl H | Vice Chairman | SELL | $1M+ | 15K | $104.23 | Feb 20, 2024 |
| Nemser Earl H | Vice Chairman | SELL | $1M+ | 75K | $101.29 | Feb 15, 2024 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 40K | $95.52 | Feb 7, 2024 |
| Nemser Earl H | Vice Chairman | SELL | $1M+ | 100K | $96.14 | Feb 6, 2024 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 84K | $93.77 | Feb 5, 2024 |
| Frank Thomas AJ | Chief Information … | SELL | $500K+ | 9K | $90.18 | Feb 1, 2024 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 96K | $90.95 | Jan 30, 2024 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 93K | $91.19 | Jan 26, 2024 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 97K | $91.09 | Jan 24, 2024 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 15K | $88.73 | Jan 22, 2024 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 28K | $88.53 | Jan 18, 2024 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 26K | $88.01 | Jan 16, 2024 |
| Brody Paul Jonathan | CFO | SELL | $100K–$500K | 2K | $80.89 | Nov 9, 2023 |
| Brody Paul Jonathan | CFO | SELL | $500K+ | 10K | $80.19 | Nov 7, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 22K | $80.04 | Nov 3, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 25K | $80.01 | Nov 1, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 17K | $80.18 | Oct 30, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 21K | $80.25 | Oct 26, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 26K | $80.51 | Oct 24, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 26K | $82.19 | Oct 20, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 26K | $86.43 | Oct 18, 2023 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 26K | $86.42 | Oct 18, 2023 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 26K | $85.71 | Oct 16, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 26K | $85.70 | Oct 16, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 26K | $88.03 | Oct 12, 2023 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 26K | $88.04 | Oct 12, 2023 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 28K | $89.18 | Oct 10, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 26K | $89.10 | Oct 10, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 26K | $86.78 | Oct 6, 2023 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 26K | $86.80 | Oct 6, 2023 |
| Brody Paul Jonathan | CFO | SELL | $1M+ | 26K | $86.60 | Oct 4, 2023 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 26K | $86.58 | Oct 4, 2023 |
| Frank Thomas AJ | Chief Information … | SELL | $1M+ | 26K | $87.40 | Oct 2, 2023 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 832 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| VANGUARD GROUP INC | 48.4M | $1M+ | SH |
| STATE STREET CORP | 18.8M | $1M+ | SH |
| Greenwich Wealth Management LLC | 9.2M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 8.9M | $1M+ | SH |
| CANTILLON CAPITAL MANAGEMENT LLC | 8.4M | $1M+ | SH |
| NORGES BANK | 7.0M | $1M+ | SH |
| Egerton Capital (UK) LLP | 6.9M | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 5.8M | $1M+ | SH |
| 1832 Asset Management L.P. | 5.0M | $1M+ | SH |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 4.8M | $1M+ | SH |
| Neuberger Berman Group LLC | 4.2M | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 3.4M | $1M+ | SH |
| FIRST TRUST ADVISORS LP | 2.6M | $1M+ | SH |
| TD ASSET MANAGEMENT INC | 2.2M | $1M+ | SH |
| Progeny 3, Inc. | 2.1M | $1M+ | SH |
| KBC Group NV | 2.1M | $1M+ | SH |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 1.8M | $1M+ | SH |
| Empower Advisory Group, LLC | 1.8M | $1M+ | SH |
| Ensign Peak Advisors, Inc | 1.7M | $1M+ | SH |
| Ancient Art, L.P. | 1.6M | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Bares Capital Management, Inc.
SC 13G/A · Nov 7, 2025
0.0%
0 shares
SC 13G/A · Oct 17, 2025
6.2%
27.6M shares
SC 13G/A · Sep 8, 2025
11.4%
50.8M shares
ORBIS INVESTMENT MANAGEMENT LTD
SC 13G/A · Feb 14, 2025
4.8%
5.3M shares
SC 13G/A · Feb 5, 2025
9.5%
10.3M shares
SC 13G/A · Nov 14, 2024
6.0%
6.5M shares
Kayne Anderson Rudnick Investment Management, LLC 95-4575414
SC 13G/A · Nov 13, 2024
3.6%
3.9M shares
SC 13G · Feb 14, 2024
7.3%
7.7M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
9.1%
9.7M shares
Kayne Anderson Rudnick Investment Management, LLC 95-4575414
SC 13G/A · Feb 13, 2024
5.9%
6.3M shares
SC 13G/A · Jan 25, 2024
8.4%
9.0M shares
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 95-4575414
SC 13G/A · Feb 14, 2023
7.3%
7.5M shares
SC 13G/A · Feb 14, 2023
3.1%
3.2M shares
SC 13G/A · Jan 25, 2023
8.7%
8.9M shares
IBG Holdings LLC I.R.S. Identification No. 35-2296543
SC 13D/A · Aug 4, 2022
75.5%
316.6M shares
Bares Capital Management,Inc. 74-2961140
SC 13G/A · Feb 14, 2022
5.3%
5.2M shares
SC 13G · Feb 12, 2022
5.8%
5.7M shares
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 95-4575414
SC 13G/A · Feb 11, 2022
8.8%
8.7M shares