Form 13F security
INTERACTIVE BROKERS GROUP IN
Class COM CL A
As filed on Form 13F — long US-listed positions only. No shorts, cash, bonds, or non-13F assets appear here.
Filed up to 45 days after quarter end; holdings may have changed since.
Tracked managers holding it
Share and principal positions
| Manager | Quarter | Value | % of portfolio | SH/PRN qty | Put/call |
|---|---|---|---|---|---|
| VIKING GLOBAL INVESTORS LP | 2026-06-30 | $420M | 1.2% | SH 4,830,748 | — |
| Point72 Asset Management, L.P. | 2026-06-30 | $75M | <0.1% | SH 867,084 | — |
| LONE PINE CAPITAL LLC | 2026-06-30 | $50M | 0.3% | SH 577,666 | — |
| Cantillon Capital Management LLC | 2026-06-30 | $45M | 6.8% | SH 517,833 | — |
| SOROS FUND MANAGEMENT LLC | 2026-06-30 | $13M | 0.2% | SH 151,470 | — |
| Bridgewater Associates, LP | 2026-06-30 | $3.7M | <0.1% | SH 42,076 | — |
| GAMCO INVESTORS, INC. ET AL | 2026-06-30 | $1.4M | <0.1% | SH 16,475 | — |
| Fisher Asset Management, LLC — Ken Fisher | 2026-06-30 | $0.6M | <0.1% | SH 7,387 | — |
Total $610M across 8 of 69 managers.
Put positions
| Manager | Quarter | Value | % of portfolio | SH/PRN qty | Put/call |
|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | 2026-06-30 | $2.3M | <0.1% | SH 26,100 | [PUT] |
Total $2.3M across 1 of 69 managers.
Call positions
| Manager | Quarter | Value | % of portfolio | SH/PRN qty | Put/call |
|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | 2026-06-30 | $13M | <0.1% | SH 146,400 | [CALL] |
Total $13M across 1 of 69 managers.
Sums are across tracked reports, not unique economic ownership.
Cantillon Capital Management LLC — Combined report.
Filed rows (10) — as filed
| Manager | Class | Put/call | Value | % of portfolio | SH/PRN qty | Source |
|---|---|---|---|---|---|---|
| VIKING GLOBAL INVESTORS LP | COM CL A | — | $420M | 1.2% | SH 4,830,748 | 0001103804-26-000006 |
| Point72 Asset Management, L.P. | COM CL A | — | $75M | <0.1% | SH 867,084 | 0000919574-26-005520 |
| LONE PINE CAPITAL LLC | COM CL A | — | $50M | 0.3% | SH 577,666 | 0000919574-26-005485 |
| Cantillon Capital Management LLC | COM CL A | — | $45M | 6.8% | SH 517,833 | 0001279936-26-000005 |
| SOROS FUND MANAGEMENT LLC | COM CL A | — | $13M | 0.2% | SH 151,470 | 0000902664-26-003507 |
| Point72 Asset Management, L.P. | COM CL A | [CALL] | $13M | <0.1% | SH 146,400 | 0000919574-26-005520 |
| Bridgewater Associates, LP | COM CL A | — | $3.7M | <0.1% | SH 42,076 | 0001350694-26-000003 |
| Point72 Asset Management, L.P. | COM CL A | [PUT] | $2.3M | <0.1% | SH 26,100 | 0000919574-26-005520 |
| GAMCO INVESTORS, INC. ET AL | EQUITY | — | $1.4M | <0.1% | SH 16,475 | 0001140361-26-032508 |
| Fisher Asset Management, LLC | COM | — | $0.6M | <0.1% | SH 7,387 | 0000850529-26-000006 |
Quarter-to-quarter notes
Reported change, not a confirmed trade: this compares quarter-end reports filed up to 45 days later, and the position may since have changed. Amendments, corporate actions, and changes in reporting scope can also move these rows. Value change compares period-end reported values; for continuing rows it includes market price movement.
Newly reported by LONE PINE CAPITAL LLC.
Changes appear only where the prior quarter's validated report exists.