Security record · archived quarter
INSM
Insmed Incorporated · Healthcare · Biotechnology
18Tracked holders
+1Δ holders
70.35MShares held
$7.08BReported value
+2New positions
−1Exits
Momentum inputs (comparable managers):
holder breadth +5.9% ·
share flow +3.7% ·
net new positions +5.6%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 158 | -6 | 147.56M | $15.74B | +6 | −11 |
| Q1 2026 | 166 | +6 | 152.11M | $24.63B | +9 | −4 |
| Q4 2025 | 159 | -1 | 156.45M | $27.23B | +1 | −1 |
| Q3 2025 | 21 | +1 | 121.03M | $17.43B | +1 | −1 |
| Q2 2025 | 18 | +1 | 70.35M | $7.08B | +2 | −1 |
| Q1 2025 | 14 | -1 | 33.99M | $2.59B | — | −1 |
| Q4 2024 | 15 | 0 | 31.46M | $2.17B | +1 | −1 |
| Q3 2024 | 14 | -1 | 23.46M | $1.71B | — | −1 |
| Q2 2024 | 15 | — | 25.91M | $1.74B | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 17.64M | — | $1.78B | 0.0% | n/c | 1 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 17.64M | — | $1.78B | 0.0% | n/c | 1 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 17.64M | — | $1.78B | 0.0% | n/c | 1 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 17.64M | — | $1.78B | 0.0% | n/c | 1 | SEC ↗ |
| 5 | The Vanguard Group ✦ (passive) | 17.64M | — | $1.78B | 0.0% | n/c | 1 | SEC ↗ |
| 6 | T. Rowe Price ✦ | 11.23M | -13.1% | $1.13B | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 11.23M | -13.1% | $1.13B | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 11.14M | — | $1.12B | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Fidelity (FMR) ✦ | 5.09M | — | $512.59M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | Fidelity (FMR) ✦ | 5.09M | — | $512.59M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 5.09M | — | $512.59M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Fidelity (FMR) ✦ | 5.09M | — | $512.59M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | Fidelity (FMR) ✦ | 5.09M | — | $512.59M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | Fidelity (FMR) ✦ | 5.09M | — | $512.59M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | State Street Global Advisors ✦ (passive) | 4.28M | -25.6% | $430.53M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 32 | D. E. Shaw & Co. ✦ | 3.42M | +365.7% | $344.45M | 0.4% | ▲ Add | 5 | SEC ↗ |
| 33 | D. E. Shaw & Co. ✦ | 3.42M | +365.7% | $344.45M | 0.4% | ▲ Add | 5 | SEC ↗ |
| 34 | Geode Capital Management ✦ (passive) | 3.34M | -22.1% | $336.26M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 35 | Geode Capital Management ✦ (passive) | 3.34M | -22.1% | $336.26M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 36 | Adage Capital Partners ✦ | 2.86M | -17.0% | $287.78M | 0.5% | ▼ Trim | 5 | SEC ↗ |
| 37 | Duquesne Family Office ✦ | 2.25M | +64.6% | $226.79M | 5.8% | ▲ Add | 5 | SEC ↗ |
| 38 | Millennium Management ✦ | 2.12M | +212.4% | $213.53M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 39 | Norges Bank ✦ (passive) | 1.93M | +11.0% | $194.73M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 40 | Citadel Advisors ✦ | 1.53M | +309.1% | $154.31M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 41 | Citadel Advisors ✦ | 1.53M | +309.1% | $154.31M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 42 | Wellington Management ✦ | 1.16M | -5.2% | $116.71M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 43 | Wellington Management ✦ | 1.16M | -5.2% | $116.71M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 44 | Wellington Management ✦ | 1.16M | -5.2% | $116.71M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 45 | Wellington Management ✦ | 1.16M | -5.2% | $116.71M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 46 | Wellington Management ✦ | 1.16M | -5.2% | $116.71M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 47 | Wellington Management ✦ | 1.16M | -5.2% | $116.71M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 48 | Wellington Management ✦ | 1.16M | -5.2% | $116.71M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 49 | Marshall Wace ✦ | 1.11M | +59.9% | $112.05M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 50 | Marshall Wace ✦ | 1.11M | +59.9% | $112.05M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 51 | Marshall Wace ✦ | 1.11M | +59.9% | $112.05M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 52 | Point72 Asset Management ✦ | 490.67K | New | $49.38M | 0.1% | New | 1 | SEC ↗ |
| 53 | Two Sigma Investments ✦ | 376.51K | -7.5% | $37.89M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 54 | Renaissance Technologies ✦ | 308.69K | New | $31.07M | 0.0% | New | 1 | SEC ↗ |
| 55 | AQR Capital Management ✦ | 49.72K | -3.0% | $5.00M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 56 | AQR Capital Management ✦ | 49.72K | -3.0% | $5.00M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 57 | AQR Capital Management ✦ | 49.72K | -3.0% | $5.00M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 58 | AQR Capital Management ✦ | 49.72K | -3.0% | $5.00M | 0.0% | ▼ Trim | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $49.38M | 0.1% |
| Renaissance Technologies | $31.07M | 0.0% |
Exited
| Soros Fund Management | $23.44M | was 0.6% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 664 holders, 192.22M shares, $30.07B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 17
SHAROKY MELVIN MD
Director · 5.00K sh · $637,650
Aug 10
Adsett Roger
Officer · 239.85K sh · $31.96M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Aug 14
SC 13G/A — Darwin Global Management, Ltd.
Aug 06
SC 13G/A — FMR LLC
Jul 22
SC 13G/A — JPMORGAN CHASE & CO
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2025 ·
Methodology ·
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