INSMED Inc INSM
CIK 0001104506 · CUSIP 457669307
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | Darwin Global Management, Ltd. CIK 1839209 · View history | $1.92B 19,344,621 shares | 80.75% | +3.95M(+25.60%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $1.78B 17,644,492 shares | 0.03% | -623.63K(-3.40%)Reduced | SEC filing ↗ Aug 11, 2025 | ▾ |
| 03 | JPMORGAN CHASE & CO CIK 19617 · View history | $1.57B 15,636,399 shares | 0.11% | +9.28M(+146.10%)Added | SEC filing ↗ Aug 12, 2025 | ▾ |
| 04 | PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history | $1.13B 11,230,705 shares | 0.13% | -1.69M(-13.10%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 05 | BlackRock, Inc. CIK 2012383 · View history | $1.12B 11,142,432 shares | 0.02% | -4.91M(-30.60%)Reduced | SEC filing ↗ Aug 12, 2025 | ▾ |
| 06 | BAKER BROS. ADVISORS LP CIK 1263508 · View history | $776.23M 7,712,900 shares | 7.53% | +2.33M(+43.30%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 07 | Capital International Investors CIK 1562230 · View history | $752.67M 7,478,859 shares | 0.13% | +280.37K(+3.90%)Added | SEC filing ↗ Aug 13, 2025 | ▾ |
| 08 | FMR LLC CIK 315066 · View history | $512.59M 5,093,261 shares | 0.03% | +1.70M(+50.00%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 09 | STATE STREET CORP CIK 93751 · View history | $430.53M 4,277,888 shares | 0.02% | -1.47M(-25.60%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 10 | D. E. Shaw & Co., Inc. CIK 1009207 · View history | $344.45M 3,422,619 shares | 0.34% | +2.69M(+365.70%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 11 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $336.26M 3,340,707 shares | 0.02% | -948.03K(-22.10%)Reduced | SEC filing ↗ Aug 8, 2025 | ▾ |
| 12 | Artisan Partners Limited Partnership CIK 1466153 · View history | $333.56M 3,314,341 shares | 0.50% | +97.07K(+3.00%)Added | SEC filing ↗ Aug 12, 2025 | ▾ |
| 13 | RTW INVESTMENTS, LP CIK 1493215 · View history | $310.43M 3,084,558 shares | 4.42% | +70.00K(+2.30%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 14 | AMERIPRISE FINANCIAL INC CIK 820027 · View history | $297.69M 2,957,973 shares | 0.07% | +6.35K(+0.20%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 15 | ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history | $287.78M 2,859,452 shares | 0.48% | -587.49K(-17.00%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 16 | FRANKLIN RESOURCES INC CIK 38777 · View history | $236.52M 2,350,133 shares | 0.06% | +201.85K(+9.40%)Added | SEC filing ↗ Aug 12, 2025 | ▾ |
| 17 | JANUS HENDERSON GROUP PLC CIK 1274173 · View history | $230.78M 2,293,142 shares | 0.11% | +747.72K(+48.40%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 18 | Duquesne Family Office LLC CIK 1536411 · View history | $226.79M 2,253,435 shares | 5.79% | +884.38K(+64.60%)Added | SEC filing ↗ Aug 15, 2025 | ▾ |
| 19 | MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history | $213.53M 2,121,717 shares | 0.19% | +1.44M(+212.40%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 20 | Holocene Advisors, LP CIK 1700574 · View history | $202.97M 2,016,806 shares | 0.50% | -9.62K(-0.50%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
Showing 20 / 518 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
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