INSM
Insmed Inc
3 of the 83 super-investors we track hold INSM, worth a combined $654M per their latest 13F filings. The largest position: Stanley Druckenmiller at 3.5% of their portfolio. This quarter the cohort logged 1 buy and 0 sells on the name. Conviction score: 47 of 100 (how strongly the cohort backs it) — ranked #59 of 742 stocks. Conviction rising: 1 more super-investor hold it than in 2026Q1.
Why super-investors own INSM
INSM is held by 3 super-investors in our cohort, with a combined position value of $654M. The highest-conviction owner is Stanley Druckenmiller at 3.5% of their portfolio. This quarter the cohort registered 1 added.
AI-synthesized from 13F filings. Not investment advice.
Cohort owners over time
2016Q3 → 2026Q2How many of the cohort members held this stock each quarter.
Owners (3) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Joel Greenblatt | 0.2% | 37q | $273M | 2,556,973 |
| 2 | Lee Ainslie | 2.1% | 4q | $229M | 2,150,762 |
| 3 | Stanley Druckenmiller | 3.5% | 10q | $152M | 1,424,690 |
Owners of INSM also hold
Congress is trading INSM
Congress tracker →- Josh Gottheimersold$1,001 - $15,000 · 2026-06-10
- Gilbert Cisnerossold$1,001 - $15,000 · 2025-10-03 · late
- Gilbert Cisnerossold$1,001 - $15,000 · 2025-09-22
- Gilbert Cisnerossold$1,001 - $15,000 · 2025-08-08
- Gilbert Cisnerossold$1,001 - $15,000 · 2025-07-07
- Josh Gottheimerbought$1,001 - $15,000 · 2025-06-16
STOCK Act periodic transaction reports; amounts are disclosed ranges. Who files late →
Recent activity (1)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Stanley Druckenmiller | ADD | 3.5% | +23% | $152M | Aug 14, 2026 |
Long US equity 13F-HR filings only. CUSIP 457669307. Not investment advice.