Interactive Brokers Group, Inc. (IBKR) Insider Trading
Over the last 3 months, IBKR insiders made 2 open-market buys and 0 sales, a net purchase of $4K (SEC Form 4). Over the last 6 months, 797 institutions increased and 728 reduced their position (13F).
Insider Activity
Sentiment
100/100
Buys (3m)
2
Sells (3m)
0
Net (3m)
$4.4K
Insiders buying
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +10.6%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 4, 2026 | Nemser Earl Hdirector, officer: Vice Chairman | Grant | 803,568 | $87.99 |
| Aug 4, 2026 | Conkling Lori Adirector | Buy | 25 | $87.03 |
| Jul 1, 2026 | Conkling Lori Adirector | Buy | 25 | $88.03 |
| Jun 2, 2026 | Conkling Lori Adirector | Buy | 25 | $86.10 |
| May 28, 2026 | Nemser Earl Hdirector, officer: Vice Chairman | Tax | 22,486 | $84.42 |
| May 28, 2026 | Galik Milandirector, officer: Chief Executive Officer | Tax | 255,039 | $84.42 |
| May 28, 2026 | Mendonca Denisofficer: Chief Accounting Officer | Tax | 11,157 | $84.42 |
| May 28, 2026 | Frank Thomas AJofficer: Executive Vice President | Tax | 31,730 | $84.42 |
| May 28, 2026 | Brody Paul Jonathandirector, officer: Chief Financial Officer | Tax | 82,920 | $84.42 |
| May 4, 2026 | Conkling Lori Adirector | Buy | 25 | $79.64 |
| Apr 29, 2026 | Harris Lawrence Edirector | Sell | 26,000 | $76.93 |
| Apr 2, 2026 | Conkling Lori Adirector | Buy | 25 | $68.38 |
| Mar 26, 2026 | Conkling Lori Adirector | Buy | 25 | $69.21 |
| Mar 26, 2026 | Conkling Lori Adirector | Buy | 50 | $73.21 |
| Jan 28, 2026 | Nemser Earl Hdirector, officer: Vice Chairman | Sell | 20,469 | $75.75 |
| Jan 28, 2026 | Nemser Earl Hdirector, officer: Vice Chairman | Sell | 39,731 | $75.07 |
| Jan 28, 2026 | Nemser Earl Hdirector, officer: Vice Chairman | Sell | 3,101 | $77.98 |
| Jan 28, 2026 | Nemser Earl Hdirector, officer: Vice Chairman | Sell | 30,817 | $76.72 |
| Jan 28, 2026 | Nemser Earl Hdirector, officer: Vice Chairman | Sell | 60,882 | $75.83 |
| Jan 26, 2026 | Nemser Earl Hdirector, officer: Vice Chairman | Sell | 84,935 | $77.65 |
| Jan 26, 2026 | Nemser Earl Hdirector, officer: Vice Chairman | Sell | 100,000 | $76.81 |
| Jan 26, 2026 | Repetto Richard Hdirector | Grant | 389 | $64.31 |
| Jan 26, 2026 | Yuen Nicoledirector | Grant | 389 | $64.31 |
| Jan 26, 2026 | Bright Jilldirector | Grant | 389 | $64.31 |
| Jan 26, 2026 | Conkling Lori Adirector | Grant | 389 | $64.31 |
| Jan 26, 2026 | Harris Lawrence Edirector | Grant | 389 | $64.31 |
| Jan 26, 2026 | Galik Milandirector, officer: Chief Executive Officer | Grant | 389 | $64.31 |
| Jan 26, 2026 | Brody Paul Jonathandirector, officer: Chief Financial Officer | Grant | 389 | $64.31 |
| Jan 26, 2026 | Nemser Earl Hdirector, officer: Vice Chairman | Grant | 389 | $64.31 |
| Jan 26, 2026 | Peterffy Williamdirector | Grant | 389 | $64.31 |
Source: IBKR SEC Form 4 filings, latest Aug 4, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their IBKR positions over the last 6 months (SEC Form 13F).
Increased
797
New positions
340
Reduced
728
Sold out
74
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 33.1M | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 31.4M | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 28.3M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 28.2M | May 15, 2026 |
| STATE STREET CORP | Increased | 19.4M | Aug 7, 2026 |
| STATE STREET CORP | Increased | 19.1M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 15.0M | May 8, 2026 |
| FMR LLC | Increased | 12.5M | May 15, 2026 |
| FMR LLC | Reduced | 11.8M | Aug 13, 2026 |
| CANTILLON CAPITAL MANAGEMENT LLC | Reduced | 11.2M | May 7, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 10.6M | Aug 12, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 10.4M | May 15, 2026 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | Reduced | 10.0M | May 14, 2026 |
| GREENWICH WEALTH MANAGEMENT LLC | Increased | 9.9M | May 12, 2026 |
| Greenwich Wealth Management LLC | Reduced | 9.9M | Aug 12, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.