Security record · archived quarter
INSM
Insmed Incorporated · Healthcare · Biotechnology
166Tracked holders
+6Δ holders
152.11MShares held
$24.63BReported value
+9New positions
−4Exits
Momentum inputs (comparable managers):
holder breadth +3.8% ·
share flow +6.9% ·
net new positions +3.0%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 5 | 0 | 1.38M | $155.93M | n/a | n/a |
| 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 | n/a | −1 |
| Q4 2024 | 15 | 0 | 31.46M | $2.17B | +1 | −1 |
| Q3 2024 | 14 | -1 | 23.46M | $1.71B | n/a | −1 |
| Q2 2024 | 15 | n/a | 25.91M | $1.74B | n/a | n/a |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | JPMorgan Chase ✦ | 24.15M | +4.1% | $3.70B | 0.3% | ▲ Add | 3 | SEC ↗ ×18 |
| 2 | BlackRock ✦ (passive) | 16.68M | +10.7% | $2.73B | 0.0% | ▲ Add | 4 | SEC ↗ ×22 |
| 3 | Fidelity (FMR) ✦ | 13.16M | +32.6% | $2.15B | 0.1% | ▲ Add | 4 | SEC ↗ ×7 |
| 4 | Vanguard Capital Management Llc | 9.64M | n/a | $1.58B | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Artisan Partners Limited Partnership | 6.53M | +34.8% | $1.07B | 1.7% | ▲ Add | 2 | SEC ↗ |
| 6 | Invesco Ltd. | 6.51M | -13.4% | $1.06B | 0.1% | ▼ Trim | 2 | SEC ↗ ×12 |
| 7 | D. E. Shaw & Co. ✦ | 5.63M | +29.3% | $919.93M | 0.8% | ▲ Add | 8 | SEC ↗ ×2 |
| 8 | Capital International Investors | 5.60M | +8.6% | $914.89M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 9 | State Street Global Advisors ✦ (passive) | 5.55M | +6.7% | $907.81M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 10 | Geode Capital Management ✦ (passive) | 4.45M | +3.5% | $733.32M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 11 | T. Rowe Price ✦ | 3.09M | -23.4% | $505.74M | 0.1% | ▼ Trim | 8 | SEC ↗ ×2 |
| 12 | Ameriprise Financial Inc | 3.06M | +55.3% | $500.00M | 0.1% | ▲ Add | 2 | SEC ↗ ×8 |
| 13 | Franklin Resources Inc | 2.62M | -5.0% | $427.97M | 0.1% | ▼ Trim | 2 | SEC ↗ ×8 |
| 14 | Citadel Advisors ✦ | 2.18M | +88.6% | $356.89M | 0.3% | ▲ Add | 8 | SEC ↗ ×2 |
| 15 | UBS Group AG | 1.74M | -7.0% | $284.11M | 0.1% | ▼ Trim | 2 | SEC ↗ ×5 |
| 16 | Bank Of America Corp /De/ | 1.50M | -12.9% | $245.65M | 0.0% | ▼ Trim | 2 | SEC ↗ ×5 |
| 17 | Sei Investments Co | 1.40M | +56.8% | $228.24M | 0.2% | ▲ Add | 2 | SEC ↗ ×2 |
| 18 | Capital World Investors ✦ | 1.36M | New | $222.74M | 0.0% | New | 1 | SEC ↗ |
| 19 | Morgan Stanley ✦ | 1.33M | -18.4% | $217.73M | 0.0% | ▼ Trim | 3 | SEC ↗ ×15 |
| 20 | Northern Trust Corp | 1.29M | +4.5% | $211.59M | 0.0% | ▲ Add | 2 | SEC ↗ ×7 |
| 21 | Bank of New York Mellon Corp | 1.26M | -9.2% | $206.48M | 0.0% | ▼ Trim | 2 | SEC ↗ ×19 |
| 22 | UBS AM, a distinct business unit of… | 1.22M | +28.8% | $198.68M | 0.0% | ▲ Add | 2 | SEC ↗ ×11 |
| 23 | Millennium Management ✦ | 1.16M | -11.7% | $189.32M | 0.1% | ▼ Trim | 8 | SEC ↗ |
| 24 | Duquesne Family Office ✦ | 1.15M | -22.1% | $188.72M | 6.4% | ▼ Trim | 8 | SEC ↗ |
| 25 | Nomura Asset Management… | 1.14M | -3.3% | $187.02M | 0.3% | ▼ Trim | 2 | SEC ↗ |
| 26 | Pictet Asset Management Holding SA | 1.10M | +14.9% | $178.66M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 27 | Charles Schwab Investment… | 1.07M | +4.1% | $174.87M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 28 | Goldman Sachs Group ✦ | 942.65K | -24.3% | $154.14M | 0.0% | ▼ Trim | 3 | SEC ↗ ×5 |
| 29 | American Century Companies Inc | 925.80K | +400.2% | $151.39M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 30 | Principal Financial Group Inc | 916.46K | +18.8% | $149.86M | 0.1% | ▲ Add | 2 | SEC ↗ ×2 |
| 31 | Adage Capital Partners ✦ | 900.00K | +200.0% | $147.17M | 0.2% | ▲ Add | 8 | SEC ↗ |
| 32 | FIL Ltd | 828.95K | -1.1% | $135.55M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 33 | Amundi | 804.98K | -12.2% | $131.63M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 34 | Legal & General Group Plc | 787.08K | +45.7% | $128.70M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 35 | Raymond James Financial Inc | 775.15K | -0.5% | $121.38M | 0.0% | ▼ Trim | 2 | SEC ↗ ×7 |
| 36 | Alliancebernstein L.P. | 688.73K | +7.2% | $119.87M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | AQR Capital Management ✦ | 675.49K | +44.2% | $108.79M | 0.1% | ▲ Add | 8 | SEC ↗ ×7 |
| 38 | Clearbridge Investments, LLC | 643.43K | -21.4% | $105.21M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 39 | Swiss National Bank | 625.91K | +8.1% | $102.35M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 40 | Jennison Associates Llc | 604.69K | +7.5% | $98.88M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 41 | Bnp Paribas Financial Markets | 604.60K | -34.0% | $98.86M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 42 | Wells Fargo & Company/Mn | 597.38K | +1.8% | $97.68M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 43 | Deutsche Bank Ag\ | 562.47K | -4.7% | $91.98M | 0.0% | ▼ Trim | 2 | SEC ↗ ×7 |
| 44 | Federated Hermes, Inc. | 538.26K | -14.9% | $88.02M | 0.1% | ▼ Trim | 2 | SEC ↗ ×2 |
| 45 | Nuveen, LLC | 534.75K | -17.8% | $87.44M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 46 | Royal Bank Of Canada | 523.10K | +3.2% | $85.54M | 0.0% | ▲ Add | 2 | SEC ↗ ×8 |
| 47 | Sumitomo Mitsui Trust Group, Inc. | 501.28K | +15.1% | $81.97M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 48 | Ensign Peak Advisors, Inc | 499.76K | +30.8% | $81.72M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 49 | BNP Paribas Asset Management… | 467.75K | +42.5% | $76.45M | 0.1% | ▲ Add | 2 | SEC ↗ ×3 |
| 50 | Janus Henderson Group Plc | 419.30K | -47.6% | $68.56M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 51 | Dimensional Fund Advisors Lp | 400.90K | +0.5% | $65.47M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 52 | Wellington Management ✦ | 399.04K | -17.9% | $65.25M | 0.0% | ▼ Trim | 8 | SEC ↗ ×5 |
| 53 | Victory Capital Management Inc | 396.25K | -38.7% | $64.79M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 54 | California Public Employees… | 344.61K | -2.9% | $56.35M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 55 | Marshall Wace ✦ | 312.56K | -19.8% | $51.11M | 0.1% | ▼ Trim | 8 | SEC ↗ ×2 |
| 56 | National Pension Service | 311.88K | +11.2% | $51.00M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 57 | California State Teachers… | 303.18K | -2.3% | $49.58M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 58 | Envestnet Asset Management Inc | 299.93K | +8.6% | $49.04M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 59 | Bridgewater Associates ✦ | 295.58K | New | $48.33M | 0.2% | New | 1 | SEC ↗ |
| 60 | New York State Common Retirement… | 293.55K | +6.2% | $48.00M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 61 | Allspring Global Investments… | 282.73K | +28.5% | $46.61M | 0.1% | ▲ Add | 2 | SEC ↗ ×3 |
| 62 | ProShare Advisors LLC | 283.14K | -16.9% | $46.30M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 63 | Aberdeen Group plc | 277.02K | +9.4% | $45.30M | 0.1% | ▲ Add | 2 | SEC ↗ ×3 |
| 64 | Barclays Plc | 275.73K | -38.0% | $45.09M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 65 | Rhumbline Advisers | 272.62K | +1.6% | $44.58M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 66 | Neuberger Berman Group LLC | 270.70K | +30.2% | $44.26M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 67 | Mitsubishi UFJ Asset Management… | 255.25K | +14.8% | $41.74M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | Voya Investment Management Llc | 243.71K | +21.3% | $39.85M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 69 | Two Sigma Investments ✦ | 237.02K | -75.4% | $38.76M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 70 | Citigroup Inc | 233.30K | -1.9% | $38.15M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 71 | First Trust Advisors Lp | 229.56K | -7.4% | $37.54M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 72 | Balyasny Asset Management L.P. | 221.71K | -41.7% | $36.25M | 0.1% | ▼ Trim | 2 | SEC ↗ ×2 |
| 73 | Loomis Sayles & Co L P | 194.98K | -2.5% | $31.88M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 74 | State Board Of Administration Of… | 180.41K | +0.1% | $29.50M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 75 | Susquehanna International Group, Llp | 173.63K | -7.9% | $28.39M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 76 | Russell Investments Group, Ltd. | 169.16K | +16.6% | $27.66M | 0.0% | ▲ Add | 2 | SEC ↗ ×12 |
| 77 | Td Asset Management Inc | 163.42K | -37.7% | $26.72M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 78 | Zurcher Kantonalbank (Zurich… | 152.37K | -5.8% | $24.91M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 79 | Qube Research & Technologies Ltd | 148.51K | New | $24.29M | 0.0% | New | 1 | SEC ↗ |
| 80 | LPL Financial LLC | 138.28K | +4.1% | $22.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 81 | Man Group plc | 126.84K | +7.2% | $20.74M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 82 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 122.96K | +2.1% | $20.08M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 83 | Aviva Plc | 122.07K | +11.6% | $19.96M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 84 | Universal- Beteiligungs- und… | 120.35K | +16.5% | $19.68M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 85 | Schroder Investment Management Group | 119.96K | n/a | $19.62M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 86 | Hsbc Holdings Plc | 116.46K | -52.8% | $19.04M | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 87 | PFA Pension, Forsikringsaktieselskab | 114.79K | +137.5% | $18.77M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 88 | State Of Wisconsin Investment Board | 114.35K | -13.1% | $18.70M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | Danske Bank A/S | 111.06K | +0.7% | $18.16M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 90 | National Bank Of Canada /Fi/ | 104.76K | -3.6% | $17.13M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 91 | Mirae Asset Global Investments Co.… | 92.08K | +17.3% | $15.06M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 92 | Storebrand Asset Management As | 90.83K | +340.3% | $14.85M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 93 | Nomura Asset Management Co Ltd | 89.66K | +7.3% | $14.66M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 94 | Mitsubishi UFJ Trust & Banking Corp | 84.18K | +1.4% | $13.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 95 | Swedbank AB | 82.86K | +39.1% | $13.55M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 96 | Asset Management One Co., Ltd. | 82.38K | +1.9% | $13.47M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 97 | Stifel Financial Corp | 75.70K | +9.3% | $12.38M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 98 | Manufacturers Life Insurance… | 72.70K | -38.8% | $11.89M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 99 | Creative Planning | 72.20K | +2.4% | $11.81M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 100 | Parnassus Investments, Llc | 69.52K | +34.6% | $11.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Capital World Investors | $222.74M | 0.0% |
| Bridgewater Associates | $48.33M | 0.2% |
| Qube Research & Technologies… | $24.29M | 0.0% |
Exited
| Norges Bank | $506.63M | was 0.1% |
| Holocene Advisors, LP | $139.43M | was 0.3% |
| Hrt Financial Lp | $1.04M | was 0.0% |
| Optiver Holding B.V. | $54,823 | was 0.0% |
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)
Sep 09
Brennan David R
Director · 25.00K sh · $3.10M
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: Q1 2026 ·
Methodology ·
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