Form 13F security
INSM · INSMED INC
Class COM PAR $.01
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 |
|---|---|---|---|---|---|
| MAVERICK CAPITAL LTD | 2026-06-30 | $229M | 2.0% | SH 2,150,762 | — |
| Duquesne Family Office LLC — Stanley Druckenmiller | 2026-06-30 | $152M | 2.9% | SH 1,424,690 | — |
| Point72 Asset Management, L.P. | 2026-06-30 | $57M | <0.1% | SH 536,997 | — |
| Bridgewater Associates, LP | 2026-06-30 | $49M | 0.2% | SH 455,392 | — |
Total $487M across 4 of 69 managers.
Put positions
| Manager | Quarter | Value | % of portfolio | SH/PRN qty | Put/call |
|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | 2026-06-30 | <$1M | <0.1% | SH 800 | [PUT] |
Total <$1M across 1 of 69 managers.
Call positions
| Manager | Quarter | Value | % of portfolio | SH/PRN qty | Put/call |
|---|---|---|---|---|---|
| Duquesne Family Office LLC — Stanley Druckenmiller | 2026-06-30 | $144M | 2.8% | SH 1,350,000 | [CALL] |
| Point72 Asset Management, L.P. | 2026-06-30 | <$1M | <0.1% | SH 1,300 | [CALL] |
Total $144M across 2 of 69 managers.
Sums are across tracked reports, not unique economic ownership.
Filed rows (7) — as filed
| Manager | Class | Put/call | Value | % of portfolio | SH/PRN qty | Source |
|---|---|---|---|---|---|---|
| MAVERICK CAPITAL LTD | COM PAR $.01 | — | $229M | 2.0% | SH 2,150,762 | 0000947871-26-000793 |
| Duquesne Family Office LLC | COM PAR $.01 | — | $152M | 2.9% | SH 1,424,690 | 0001536411-26-000006 |
| Duquesne Family Office LLC | COM PAR $.01 | [CALL] | $144M | 2.8% | SH 1,350,000 | 0001536411-26-000006 |
| Point72 Asset Management, L.P. | COM PAR $.01 | — | $57M | <0.1% | SH 536,997 | 0000919574-26-005520 |
| Bridgewater Associates, LP | COM PAR $.01 | — | $49M | 0.2% | SH 455,392 | 0001350694-26-000003 |
| Point72 Asset Management, L.P. | COM PAR $.01 | [CALL] | <$1M | <0.1% | SH 1,300 | 0000919574-26-005520 |
| Point72 Asset Management, L.P. | COM PAR $.01 | [PUT] | <$1M | <0.1% | SH 800 | 0000919574-26-005520 |
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 MAVERICK CAPITAL LTD, Point72 Asset Management, L.P..
Changes appear only where the prior quarter's validated report exists.