Security record · archived quarter
ALNY
Alnylam Pharmaceuticals, Inc. · Healthcare · Biotechnology
162Tracked holders
-2Δ holders
118.83MShares held
$47.26BReported value
+1New positions
−2Exits
Momentum inputs (comparable managers):
holder breadth -1.2% ·
share flow -4.6% ·
net new positions -0.6%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 162 | +3 | 107.60M | $32.37B | +7 | −3 |
| Q1 2026 | 161 | -2 | 108.78M | $35.89B | +4 | −7 |
| Q4 2025 | 162 | -2 | 118.83M | $47.26B | +1 | −2 |
| Q3 2025 | 24 | +1 | 85.59M | $39.02B | +2 | −2 |
| Q2 2025 | 21 | -1 | 76.99M | $25.10B | — | −1 |
| Q1 2025 | 19 | +2 | 40.24M | $10.86B | +3 | −1 |
| Q4 2024 | 17 | 0 | 41.95M | $9.87B | — | — |
| Q3 2024 | 16 | +1 | 39.28M | $10.80B | +2 | −1 |
| Q2 2024 | 15 | — | 40.30M | $9.79B | — | — |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Capital World Investors ✦ | 16.30M | -0.8% | $6.48B | 0.9% | ▼ Trim | 7 | SEC ↗ |
| 2 | Fidelity (FMR) ✦ | 15.90M | -5.2% | $6.32B | 0.3% | ▼ Trim | 3 | SEC ↗ ×7 |
| 3 | The Vanguard Group ✦ (passive) | 13.55M | -0.1% | $5.39B | 0.1% | ▼ Trim | 3 | SEC ↗ ×5 |
| 4 | BlackRock ✦ (passive) | 10.40M | +5.0% | $4.14B | 0.1% | ▲ Add | 3 | SEC ↗ ×23 |
| 5 | Capital Research Global Investors | 6.78M | — | $2.70B | 0.5% | n/c | 1 | SEC ↗ |
| 6 | Invesco Ltd. | 5.13M | — | $2.04B | 0.2% | n/c | 1 | SEC ↗ ×23 |
| 7 | JPMorgan Chase ✦ | 4.72M | -48.1% | $1.88B | 0.1% | ▼ Trim | 2 | SEC ↗ ×17 |
| 8 | State Street Global Advisors ✦ (passive) | 3.23M | +4.8% | $1.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 9 | Geode Capital Management ✦ (passive) | 2.65M | +6.1% | $1.06B | 0.1% | ▲ Add | 7 | SEC ↗ ×2 |
| 10 | Baillie Gifford ✦ | 2.60M | -6.8% | $1.03B | 0.9% | ▼ Trim | 7 | SEC ↗ ×4 |
| 11 | Norges Bank ✦ (passive) | 2.25M | New | $895.82M | 0.1% | New | 1 | SEC ↗ |
| 12 | Dodge & Cox ✦ | 1.96M | -15.4% | $781.15M | 0.4% | ▼ Trim | 7 | SEC ↗ |
| 13 | T. Rowe Price ✦ | 1.70M | -5.4% | $677.13M | 0.1% | ▼ Trim | 7 | SEC ↗ ×2 |
| 14 | Wellington Management ✦ | 1.63M | -10.8% | $647.74M | 0.1% | ▼ Trim | 7 | SEC ↗ ×8 |
| 15 | American Century Companies Inc | 1.49M | — | $590.58M | 0.3% | n/c | 1 | SEC ↗ |
| 16 | Arrowstreet Capital ✦ | 1.13M | -16.9% | $448.22M | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 17 | Morgan Stanley ✦ | 970.16K | +33.6% | $385.78M | 0.0% | ▲ Add | 2 | SEC ↗ ×17 |
| 18 | Legal & General Group Plc | 961.50K | — | $382.34M | 0.1% | n/c | 1 | SEC ↗ ×3 |
| 19 | AQR Capital Management ✦ | 919.96K | +23.6% | $365.82M | 0.2% | ▲ Add | 7 | SEC ↗ ×9 |
| 20 | Northern Trust Corp | 857.74K | — | $341.08M | 0.0% | n/c | 1 | SEC ↗ ×7 |
| 21 | UBS Group AG | 825.84K | — | $328.40M | 0.1% | n/c | 1 | SEC ↗ ×5 |
| 22 | Franklin Resources Inc | 787.62K | — | $313.20M | 0.1% | n/c | 1 | SEC ↗ ×9 |
| 23 | Qube Research & Technologies Ltd | 774.68K | — | $308.05M | 0.4% | n/c | 1 | SEC ↗ |
| 24 | Deutsche Bank Ag\ | 711.98K | — | $283.12M | 0.1% | n/c | 1 | SEC ↗ ×7 |
| 25 | Bank Of America Corp /De/ | 685.18K | — | $272.46M | 0.0% | n/c | 1 | SEC ↗ ×8 |
| 26 | UBS AM, a distinct business unit of… | 652.37K | — | $259.41M | 0.1% | n/c | 1 | SEC ↗ ×11 |
| 27 | Charles Schwab Investment… | 647.84K | — | $257.61M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Federated Hermes, Inc. | 628.06K | — | $249.75M | 0.4% | n/c | 1 | SEC ↗ ×3 |
| 29 | Two Sigma Investments ✦ | 616.12K | +3.4% | $245.00M | 0.4% | ▲ Add | 7 | SEC ↗ |
| 30 | Amundi | 608.88K | — | $242.12M | 0.1% | n/c | 1 | SEC ↗ ×5 |
| 31 | Clearbridge Investments, LLC | 597.01K | — | $237.40M | 0.2% | n/c | 1 | SEC ↗ |
| 32 | Royal Bank Of Canada | 591.50K | — | $235.21M | 0.0% | n/c | 1 | SEC ↗ ×10 |
| 33 | Nuveen, LLC | 565.79K | — | $224.99M | 0.1% | n/c | 1 | SEC ↗ ×3 |
| 34 | Marshall Wace ✦ | 549.92K | +8.2% | $218.68M | 0.2% | ▲ Add | 6 | SEC ↗ ×3 |
| 35 | Bank of New York Mellon Corp | 504.13K | — | $200.47M | 0.0% | n/c | 1 | SEC ↗ ×15 |
| 36 | Massachusetts Financial Services Co… | 495.31K | — | $196.96M | 0.1% | n/c | 1 | SEC ↗ ×6 |
| 37 | Loomis Sayles & Co L P | 488.90K | — | $194.41M | 0.2% | n/c | 1 | SEC ↗ ×2 |
| 38 | D. E. Shaw & Co. ✦ | 444.49K | +122.9% | $176.75M | 0.1% | ▲ Add | 7 | SEC ↗ ×2 |
| 39 | 1832 Asset Management L.P. | 440.14K | — | $175.02M | 0.2% | n/c | 1 | SEC ↗ |
| 40 | Bnp Paribas Financial Markets | 389.44K | — | $154.86M | 0.1% | n/c | 1 | SEC ↗ |
| 41 | Raymond James Financial Inc | 388.70K | — | $154.43M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 42 | Goldman Sachs Group ✦ | 375.32K | -30.3% | $149.25M | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 43 | Swiss National Bank | 359.20K | — | $142.84M | 0.1% | n/c | 1 | SEC ↗ |
| 44 | Squarepoint Ops LLC | 350.97K | — | $139.56M | 0.3% | n/c | 1 | SEC ↗ |
| 45 | Sumitomo Mitsui Trust Group, Inc. | 327.76K | — | $130.33M | 0.1% | n/c | 1 | SEC ↗ |
| 46 | Pictet Asset Management Holding SA | 316.05K | — | $125.78M | 0.1% | n/c | 1 | SEC ↗ |
| 47 | Nomura Asset Management… | 311.76K | — | $123.97M | 0.2% | n/c | 1 | SEC ↗ |
| 48 | Jane Street Group, Llc | 311.29K | — | $123.78M | 0.1% | n/c | 1 | SEC ↗ ×2 |
| 49 | Dimensional Fund Advisors Lp | 301.87K | — | $120.03M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 50 | Allspring Global Investments… | 278.66K | — | $111.51M | 0.2% | n/c | 1 | SEC ↗ ×3 |
| 51 | Jennison Associates Llc | 277.76K | — | $110.45M | 0.1% | n/c | 1 | SEC ↗ |
| 52 | Td Asset Management Inc | 269.10K | — | $107.01M | 0.1% | n/c | 1 | SEC ↗ |
| 53 | Canada Pension Plan Investment Board | 258.71K | — | $102.88M | 0.1% | n/c | 1 | SEC ↗ |
| 54 | Wells Fargo & Company/Mn | 257.64K | — | $102.45M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 55 | First Trust Advisors Lp | 256.95K | — | $102.18M | 0.1% | n/c | 1 | SEC ↗ |
| 56 | Royal London Asset Management Ltd | 253.07K | — | $100.63M | 0.2% | n/c | 1 | SEC ↗ |
| 57 | California Public Employees… | 237.00K | — | $94.25M | 0.1% | n/c | 1 | SEC ↗ |
| 58 | Barclays Plc | 222.56K | — | $88.50M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 59 | Victory Capital Management Inc | 220.87K | — | $87.83M | 0.1% | n/c | 1 | SEC ↗ |
| 60 | ProShare Advisors LLC | 211.08K | — | $83.93M | 0.1% | n/c | 1 | SEC ↗ |
| 61 | California State Teachers… | 201.82K | — | $80.25M | 0.1% | n/c | 1 | SEC ↗ |
| 62 | Voya Investment Management Llc | 198.61K | — | $78.98M | 0.1% | n/c | 1 | SEC ↗ ×3 |
| 63 | Rhumbline Advisers | 195.27K | — | $77.65M | 0.1% | n/c | 1 | SEC ↗ |
| 64 | Susquehanna International Group, Llp | 191.82K | — | $76.28M | 0.1% | n/c | 1 | SEC ↗ |
| 65 | Korea Investment CORP | 189.77K | — | $75.46M | 0.1% | n/c | 1 | SEC ↗ |
| 66 | Ameriprise Financial Inc | 181.14K | — | $72.03M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 67 | Hsbc Holdings Plc | 179.03K | — | $71.35M | 0.0% | n/c | 1 | SEC ↗ ×14 |
| 68 | Citigroup Inc | 172.56K | — | $68.62M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 69 | National Pension Service | 168.15K | — | $66.86M | 0.1% | n/c | 1 | SEC ↗ |
| 70 | Russell Investments Group, Ltd. | 165.74K | — | $65.90M | 0.1% | n/c | 1 | SEC ↗ ×18 |
| 71 | Robeco Institutional Asset… | 144.72K | — | $57.55M | 0.1% | n/c | 1 | SEC ↗ |
| 72 | Man Group plc | 144.21K | — | $57.35M | 0.1% | n/c | 1 | SEC ↗ ×2 |
| 73 | Mitsubishi UFJ Asset Management… | 138.79K | — | $55.54M | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Janus Henderson Group Plc | 136.43K | — | $54.25M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 75 | Aberdeen Group plc | 132.85K | — | $52.83M | 0.1% | n/c | 1 | SEC ↗ ×3 |
| 76 | Universal- Beteiligungs- und… | 124.64K | — | $49.40M | 0.1% | n/c | 1 | SEC ↗ |
| 77 | Envestnet Asset Management Inc | 120.52K | — | $47.92M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Neuberger Berman Group LLC | 115.20K | — | $45.81M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 79 | State Board Of Administration Of… | 114.60K | — | $45.57M | 0.1% | n/c | 1 | SEC ↗ |
| 80 | Sei Investments Co | 111.11K | — | $44.19M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 81 | Aviva Plc | 110.66K | — | $44.00M | 0.1% | n/c | 1 | SEC ↗ |
| 82 | BNP Paribas Asset Management… | 109.60K | — | $43.59M | 0.1% | n/c | 1 | SEC ↗ ×2 |
| 83 | HighTower Advisors, LLC | 106.49K | — | $42.35M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Nomura Asset Management Co Ltd | 94.28K | — | $37.49M | 0.1% | n/c | 1 | SEC ↗ ×3 |
| 85 | FIL Ltd | 94.16K | — | $37.44M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 86 | Zurcher Kantonalbank (Zurich… | 89.80K | — | $35.71M | 0.1% | n/c | 1 | SEC ↗ |
| 87 | Bridgewater Associates ✦ | 85.62K | +152.5% | $34.05M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 88 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 80.10K | — | $31.85M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 89 | Mitsubishi UFJ Trust & Banking Corp | 79.40K | — | $31.57M | 0.1% | n/c | 1 | SEC ↗ ×2 |
| 90 | Millennium Management ✦ | 75.43K | -86.3% | $29.99M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 91 | Storebrand Asset Management As | 74.78K | — | $29.74M | 0.1% | n/c | 1 | SEC ↗ |
| 92 | Danske Bank A/S | 67.20K | — | $26.72M | 0.1% | n/c | 1 | SEC ↗ ×2 |
| 93 | National Bank Of Canada /Fi/ | 66.43K | — | $26.42M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 94 | State Of Wisconsin Investment Board | 66.06K | — | $26.27M | 0.1% | n/c | 1 | SEC ↗ |
| 95 | Asset Management One Co., Ltd. | 65.19K | — | $26.00M | 0.1% | n/c | 1 | SEC ↗ |
| 96 | New York State Common Retirement… | 64.42K | — | $25.62M | 0.0% | n/c | 1 | SEC ↗ |
| 97 | Manufacturers Life Insurance… | 63.41K | — | $25.19M | 0.0% | n/c | 1 | SEC ↗ |
| 98 | Swedbank AB | 61.94K | — | $24.63M | 0.0% | n/c | 1 | SEC ↗ |
| 99 | LMR Partners LLP | 59.02K | — | $23.47M | 0.3% | n/c | 1 | SEC ↗ |
| 100 | Ensign Peak Advisors, Inc | 57.93K | — | $23.04M | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $895.82M | 0.1% |
Exited
| Point72 Asset Management | $2.83M | was 0.0% |
| Soros Fund Management | $1.96M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 781 holders, 122.25M shares, $37.95B 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)
Oct 02
SUPRAN BRYAN
Officer · 1.76K sh · $398,855
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
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: Q4 2025 ·
Methodology ·
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