Interactive Brokers
IBKR
86.03
+1.89
+2.25%
Interactive Brokers
US · IBKR
#135 by market cap
Listed 1970
86.03
+1.89
+2.25%
Live - 5344 symbols - heartbeat 340s ago
· 2026-10-15 19:20
✦ Quant Ownership Signal how this is computed
Distributing
- The number of reporting institutions decreased by 7 in the most recent period (2026/Q3).
- Total institutional ownership fell 0.5 percentage points.
Institutional ownership
- Held by institutions
- 87.34% -0.55pp
- Institutions
- 1,324 -7
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
DivergingInstitutions trimmed shares last reporting period, and the stock has seen net inflows in main-fund flow over the last 20 trading sessions - the two are pointing in different directions.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund68.28%
Hedge Fund7.41%
Public Company3.79%
Private Company3.19%
Individual/Insider2.83%
Government Pension Fund2.31%
Sovereign Wealth Fund1.44%
Family Office/Trust0.28%
Government0.20%
Other10.27%
Top holders as of 2026-06-30
BlackRock
7.31% · 33.13M sh
Vanguard Capital Management, LLC
6.81% · 30.86M sh
State Street Global Advisors
4.29% · 19.44M sh
Geode Capital Management, LLC
2.35% · 10.64M sh
Greenwich Wealth Management, LLC
2.19% · 9.92M sh
FMR
2.06% · 9.35M sh
Other
77.05%
Vanguard Portfolio Management, LLC
1.93% · 8.72M sh
Two Sigma Investments, LP
1.84% · 8.34M sh
Wellington Management Group
1.63% · 7.38M sh
Invesco Ltd.
1.44% · 6.50M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 34 buys · 16 sells
| Name | Role | Stake |
|---|---|---|
| Thomas Peterffy | Founder & Chairperson | 1.34% |
| Paul Brody | CFO, Treasurer, Secretary & Director | 0.58% |
| Milan Galik | Chief Executive Officer | 0.55% |
| Earl Nemser | Independent Vice Chairperson | 0.25% |
| Thomas A. Frank | Executive Vice President | 0.04% |
| Lawrence Harris | Lead Independent Director | 0.04% |
| Denis Mendonca | Chief Accounting Officer | 0.02% |
| Nicole Yuen | Independent Director | 0.00% |
| William Peterffy | Director | 0.00% |
| Jill Bright | Director | 0.00% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-09-30 | Lori Conkling | Independent Director | Open Market Acquisition | +25 | $85.42 |
| 2026-08-31 | Lori Conkling | Independent Director | Open Market Acquisition | +25 | $94.53 |
| 2026-08-02 | Lori Conkling | Independent Director | Open Market Acquisition | +25 | $87.03 |
| 2026-07-30 | Earl Nemser | Independent Vice Chairperson | Other Acquisition | +803,568 | $87.99 |
| 2026-06-30 | Lori Conkling | Independent Director | Open Market Acquisition | +25 | $88.03 |
| 2026-05-31 | Lori Conkling | Independent Director | Open Market Acquisition | +25 | $86.10 |
| 2026-05-07 | Paul Brody | CFO, Treasurer, Secretary & Director | Sale to Issuer | -82,920 | $84.42 |
| 2026-05-07 | Earl Nemser | Independent Vice Chairperson | Sale to Issuer | -22,486 | $84.42 |
| 2026-05-07 | Milan Galik | Chief Executive Officer | Sale to Issuer | -255,039 | $84.42 |
| 2026-05-07 | Thomas A. Frank | Executive Vice President | Sale to Issuer | -31,730 | $84.42 |
| 2026-05-07 | Denis Mendonca | Chief Accounting Officer | Sale to Issuer | -11,157 | $84.42 |
| 2026-04-30 | Lori Conkling | Independent Director | Open Market Acquisition | +25 | $79.64 |
| 2026-04-27 | Lawrence Harris | Lead Independent Director | Open Market Disposition | -26,000 | $76.93 |
| 2026-03-31 | Lori Conkling | Independent Director | Open Market Acquisition | +25 | $68.38 |
| 2026-03-01 | Lori Conkling | Independent Director | Automatic Acquisition | +75 | $69.21–73.21 |
| 2026-01-26 | Earl Nemser | Independent Vice Chairperson | Open Market Disposition | -155,000 | $75.07–77.98 |
| 2026-01-22 | Earl Nemser | Independent Vice Chairperson | Open Market Disposition | -245,000 | $76.81–78.14 |
| 2026-01-21 | Earl Nemser | Independent Vice Chairperson | Intent to Sell (Form 144) | -400,000 | $75.80 |
| 2025-12-31 | Paul Brody | CFO, Treasurer, Secretary & Director | Other Acquisition | +389 | $64.31 |
| 2025-12-31 | Richard Repetto | Independent Director | Other Acquisition | +389 | $64.31 |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-15 19:20:02 · For reference only, not investment advice and not tailored to your situation.
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