Security record
INSM
Insmed Incorporated · Healthcare · Biotechnology
158Tracked holders
-6Δ holders
147.56MShares held
$15.74BReported value
+6New positions
−11Exits
Momentum inputs (comparable managers):
holder breadth -3.7% ·
share flow -4.7% ·
net new positions -3.2%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026
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 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 16.14M | +22.7% | $1.72B | 0.1% | ▲ Add | 5 | SEC ↗ ×7 |
| 2 | BlackRock ✦ (passive) | 15.81M | -5.2% | $1.69B | 0.0% | ▼ Trim | 5 | SEC ↗ ×21 |
| 3 | JPMorgan Chase ✦ | 10.43M | -56.8% | $1.09B | 0.1% | ▼ Trim | 4 | SEC ↗ ×15 |
| 4 | Vanguard Capital Management Llc | 9.79M | +1.5% | $1.04B | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | Capital International Investors | 8.24M | +47.2% | $878.34M | 0.2% | ▲ Add | 3 | SEC ↗ |
| 6 | Ameriprise Financial Inc | 6.18M | +102.1% | $658.88M | 0.1% | ▲ Add | 3 | SEC ↗ ×8 |
| 7 | State Street Global Advisors ✦ (passive) | 6.05M | +9.0% | $645.28M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 8 | D. E. Shaw & Co. ✦ | 5.88M | +4.5% | $626.71M | 0.4% | ▲ Add | 9 | SEC ↗ ×2 |
| 9 | Artisan Partners Limited Partnership | 5.44M | -16.6% | $580.20M | 0.9% | ▼ Trim | 3 | SEC ↗ |
| 10 | Geode Capital Management ✦ (passive) | 4.22M | -5.2% | $448.76M | 0.0% | ▼ Trim | 9 | SEC ↗ ×2 |
| 11 | T. Rowe Price ✦ | 3.41M | +10.1% | $363.07M | 0.0% | ▲ Add | 9 | SEC ↗ ×2 |
| 12 | Norges Bank ✦ (passive) | 3.38M | New | $360.12M | 0.0% | New | 1 | SEC ↗ |
| 13 | UBS Group AG | 2.58M | +48.8% | $275.55M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 14 | Citadel Advisors ✦ | 2.56M | +17.1% | $272.62M | 0.2% | ▲ Add | 9 | SEC ↗ ×2 |
| 15 | Franklin Resources Inc | 2.27M | -13.1% | $242.37M | 0.1% | ▼ Trim | 3 | SEC ↗ ×8 |
| 16 | Millennium Management ✦ | 2.05M | +76.9% | $218.36M | 0.2% | ▲ Add | 9 | SEC ↗ |
| 17 | Qube Research & Technologies Ltd | 1.68M | +1032.8% | $179.37M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 18 | Duquesne Family Office ✦ | 1.42M | +23.4% | $151.90M | 3.5% | ▲ Add | 9 | SEC ↗ |
| 19 | Goldman Sachs Group ✦ | 1.41M | +49.6% | $150.32M | 0.0% | ▲ Add | 4 | SEC ↗ ×5 |
| 20 | UBS AM, a distinct business unit of… | 1.34M | +9.9% | $142.35M | 0.0% | ▲ Add | 3 | SEC ↗ ×11 |
| 21 | Balyasny Asset Management L.P. | 1.33M | +498.3% | $141.42M | 0.3% | ▲ Add | 3 | SEC ↗ |
| 22 | Northern Trust Corp | 1.32M | +1.6% | $140.24M | 0.0% | ▲ Add | 3 | SEC ↗ ×6 |
| 23 | Bank of New York Mellon Corp | 1.31M | +4.0% | $139.97M | 0.0% | ▲ Add | 3 | SEC ↗ ×21 |
| 24 | Two Sigma Investments ✦ | 1.24M | +424.1% | $132.45M | 0.1% | ▲ Add | 9 | SEC ↗ |
| 25 | Morgan Stanley ✦ | 1.23M | -7.4% | $131.52M | 0.0% | ▼ Trim | 4 | SEC ↗ ×14 |
| 26 | Pictet Asset Management Holding SA | 1.22M | +10.7% | $129.80M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 27 | Charles Schwab Investment… | 1.21M | +13.5% | $129.43M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 28 | Bank Of America Corp /De/ | 1.02M | -31.9% | $109.08M | 0.0% | ▼ Trim | 3 | SEC ↗ ×6 |
| 29 | Sei Investments Co | 1.02M | -27.2% | $108.31M | 0.1% | ▼ Trim | 3 | SEC ↗ ×2 |
| 30 | Jennison Associates Llc | 905.09K | +49.7% | $96.50M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 31 | FIL Ltd | 856.21K | +3.3% | $91.29M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 32 | Principal Financial Group Inc | 856.13K | -6.6% | $91.28M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 33 | Adage Capital Partners ✦ | 850.00K | -5.6% | $90.63M | 0.1% | ▼ Trim | 9 | SEC ↗ |
| 34 | Legal & General Group Plc | 826.43K | +5.0% | $88.11M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 35 | American Century Companies Inc | 759.74K | -17.9% | $81.00M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 36 | Susquehanna International Group, Llp | 729.35K | +320.1% | $77.76M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 37 | Clearbridge Investments, LLC | 715.92K | +11.3% | $76.33M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 38 | Alliancebernstein L.P. | 462.80K | -32.8% | $75.68M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 39 | Hrt Financial Lp | 709.68K | New | $75.67M | 0.1% | New | 1 | SEC ↗ ×2 |
| 40 | Ensign Peak Advisors, Inc | 702.95K | +40.7% | $74.95M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 41 | Deutsche Bank Ag\ | 690.59K | +22.8% | $73.63M | 0.0% | ▲ Add | 3 | SEC ↗ ×7 |
| 42 | Raymond James Financial Inc | 660.60K | -14.8% | $70.43M | 0.0% | ▼ Trim | 3 | SEC ↗ ×5 |
| 43 | Squarepoint Ops LLC | 616.46K | +1468.0% | $65.73M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 44 | AQR Capital Management ✦ | 612.83K | -9.3% | $65.33M | 0.0% | ▼ Trim | 9 | SEC ↗ ×6 |
| 45 | Swiss National Bank | 593.51K | -5.2% | $63.28M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 46 | Nuveen, LLC | 591.84K | +10.7% | $63.10M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 47 | Aberdeen Group plc | 577.44K | +108.5% | $61.57M | 0.1% | ▲ Add | 3 | SEC ↗ ×3 |
| 48 | Wellington Management ✦ | 543.89K | +36.3% | $57.99M | 0.0% | ▲ Add | 9 | SEC ↗ ×7 |
| 49 | Point72 Asset Management ✦ | 537.00K | New | $57.25M | 0.1% | New | 1 | SEC ↗ |
| 50 | Marshall Wace ✦ | 501.93K | +60.6% | $53.52M | 0.0% | ▲ Add | 9 | SEC ↗ ×2 |
| 51 | Amundi | 487.52K | -39.4% | $51.98M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 52 | BNP Paribas Asset Management… | 475.31K | +1.6% | $50.67M | 0.1% | ▲ Add | 3 | SEC ↗ ×3 |
| 53 | Bridgewater Associates ✦ | 455.39K | +54.1% | $48.55M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 54 | Sumitomo Mitsui Trust Group, Inc. | 437.71K | -12.7% | $46.67M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 55 | Assenagon Asset Management S.A. | 436.54K | +590.1% | $46.54M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 56 | Royal Bank Of Canada | 416.49K | -20.4% | $44.41M | 0.0% | ▼ Trim | 3 | SEC ↗ ×9 |
| 57 | Dimensional Fund Advisors Lp | 408.39K | +1.9% | $43.53M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 58 | Bnp Paribas Financial Markets | 400.76K | -33.7% | $42.73M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 59 | Neuberger Berman Group LLC | 378.82K | +39.9% | $40.39M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 60 | Invesco Ltd. | 368.26K | -94.3% | $39.26M | 0.0% | ▼ Trim | 3 | SEC ↗ ×8 |
| 61 | Envestnet Asset Management Inc | 337.00K | +12.4% | $35.93M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 62 | Victory Capital Management Inc | 306.65K | -22.6% | $32.70M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 63 | New York State Common Retirement… | 304.24K | +3.6% | $32.44M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 64 | Schroder Investment Management Group | 298.37K | +148.7% | $31.81M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 65 | Mitsubishi UFJ Asset Management… | 289.59K | +13.5% | $30.88M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 66 | Hsbc Holdings Plc | 279.96K | +140.4% | $29.93M | 0.0% | ▲ Add | 3 | SEC ↗ ×6 |
| 67 | Rhumbline Advisers | 272.71K | 0.0% | $29.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 68 | Wells Fargo & Company/Mn | 259.85K | -56.5% | $27.71M | 0.0% | ▼ Trim | 3 | SEC ↗ ×5 |
| 69 | California Public Employees… | 250.35K | -27.4% | $26.69M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 70 | Td Asset Management Inc | 240.18K | +47.0% | $25.61M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 71 | Nomura Asset Management… | 219.12K | -80.8% | $23.36M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 72 | Connor, Clark & Lunn Investment… | 212.68K | +360.0% | $22.68M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | Tudor Investment Corp Et Al | 195.39K | New | $20.83M | 0.1% | New | 1 | SEC ↗ |
| 74 | Jane Street Group, Llc | 193.53K | +1597.5% | $20.63M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 75 | Holocene Advisors, LP | 192.88K | New | $20.56M | 0.0% | New | 1 | SEC ↗ |
| 76 | Alyeska Investment Group, L.P. | 190.26K | +295.4% | $20.29M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 77 | Barclays Plc | 185.64K | -32.7% | $19.79M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 78 | State Board Of Administration Of… | 181.19K | +0.4% | $19.32M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 79 | First Trust Advisors Lp | 170.89K | -25.6% | $18.22M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 80 | Citigroup Inc | 170.27K | -27.0% | $18.15M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 81 | Aviva Plc | 144.13K | +18.1% | $15.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 82 | Russell Investments Group, Ltd. | 140.22K | -17.1% | $14.95M | 0.0% | ▼ Trim | 3 | SEC ↗ ×10 |
| 83 | Voya Investment Management Llc | 139.86K | -42.6% | $14.91M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 84 | Swedbank AB | 129.52K | +56.3% | $13.81M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 85 | LPL Financial LLC | 128.55K | -7.0% | $13.71M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 86 | Storebrand Asset Management As | 124.85K | +37.5% | $13.31M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 87 | Danske Bank A/S | 119.82K | +7.9% | $12.78M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 88 | State Of Wisconsin Investment Board | 118.06K | +3.2% | $12.59M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 89 | Universal- Beteiligungs- und… | 104.47K | -13.2% | $11.14M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 90 | Mitsubishi UFJ Trust & Banking Corp | 91.08K | +8.2% | $9.71M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 91 | Canada Pension Plan Investment Board | 89.50K | +124.3% | $9.54M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 92 | Asset Management One Co., Ltd. | 79.51K | -3.5% | $8.48M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 93 | IMC-Chicago, LLC | 76.13K | +1602.3% | $8.12M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 94 | Tidal Investments LLC | 75.83K | +22.8% | $8.09M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 95 | DZ BANK AG Deutsche Zentral… | 70.69K | +17.5% | $7.54M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 96 | Nomura Asset Management Co Ltd | 69.16K | -22.9% | $7.37M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 97 | Creative Planning | 67.76K | -6.2% | $7.22M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 98 | Jones Financial Companies Lllp | 68.80K | +66.2% | $7.11M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 99 | Manufacturers Life Insurance… | 64.58K | -11.2% | $6.89M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 100 | Mackenzie Financial Corp | 60.22K | +153.3% | $6.42M | 0.0% | ▲ Add | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $360.12M | 0.0% |
| Hrt Financial Lp | $75.67M | 0.1% |
| Point72 Asset Management | $57.25M | 0.1% |
| Tudor Investment Corp Et Al | $20.83M | 0.1% |
| Holocene Advisors, LP | $20.56M | 0.0% |
Exited
| Capital World Investors | $222.74M | was 0.0% |
| Loomis Sayles & Co L P | $31.88M | was 0.0% |
| Parnassus Investments, Llc | $11.37M | was 0.0% |
| Healthcare Of Ontario Pension… | $9.24M | was 0.0% |
| 1832 Asset Management L.P. | $4.73M | was 0.0% |
| Mariner, LLC | $3.61M | was 0.0% |
| Renaissance Technologies | $3.32M | was 0.0% |
| Baird Financial Group, Inc. | $2.89M | was 0.0% |
| Simplex Trading, Llc | $1.75M | was 0.1% |
| Lido Advisors, LLC | $324,025 | was 0.0% |
| Parallax Volatility Advisers… | $21,147 | 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: Q2 2026 ·
Methodology ·
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