Security record
ALNY
Alnylam Pharmaceuticals, Inc. · Healthcare · Biotechnology
162Tracked holders
+3Δ holders
107.60MShares held
$32.37BReported value
+7New positions
−3Exits
Momentum inputs (comparable managers):
holder breadth +1.9% ·
share flow -2.8% ·
net new positions +2.5%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
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 | 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 · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 15.02M | +3.0% | $4.52B | 0.2% | ▲ Add | 5 | SEC ↗ ×7 |
| 2 | Capital World Investors ✦ | 11.14M | +3.2% | $3.35B | 0.4% | ▲ Add | 9 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ ×22 |
| 4 | Capital Research Global Investors | 9.75M | +3.0% | $2.94B | 0.4% | ▲ Add | 3 | SEC ↗ |
| 5 | Vanguard Capital Management Llc | 6.03M | +1.4% | $1.82B | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ ×11 |
| 7 | State Street Global Advisors ✦ (passive) | 3.56M | +7.0% | $1.07B | 0.0% | ▲ Add | 7 | SEC ↗ |
| 8 | Geode Capital Management ✦ (passive) | 2.64M | -0.9% | $791.35M | 0.0% | ▼ Trim | 9 | SEC ↗ ×2 |
| 9 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ ×16 |
| 10 | Baillie Gifford ✦ | 2.44M | -2.2% | $734.48M | 0.7% | ▼ Trim | 9 | SEC ↗ ×4 |
| 11 | Norges Bank ✦ (passive) | 2.27M | New | $683.88M | 0.1% | New | 1 | SEC ↗ |
| 12 | Wellington Management ✦ | 2.11M | +9.0% | $635.30M | 0.1% | ▲ Add | 9 | SEC ↗ ×7 |
| 13 | Dodge & Cox ✦ | 1.96M | +1.4% | $588.63M | 0.3% | ▲ Add | 9 | SEC ↗ |
| 14 | Two Sigma Investments ✦ | 1.88M | -5.8% | $564.71M | 0.4% | ▼ Trim | 9 | SEC ↗ |
| 15 | American Century Companies Inc | 1.85M | +2.9% | $558.10M | 0.2% | ▲ Add | 3 | SEC ↗ |
| 16 | Clearbridge Investments, LLC | 1.26M | -7.1% | $379.14M | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 17 | T. Rowe Price ✦ | 1.15M | -19.8% | $345.94M | 0.0% | ▼ Trim | 9 | SEC ↗ ×2 |
| 18 | D. E. Shaw & Co. ✦ | 1.10M | +4.2% | $332.37M | 0.2% | ▲ Add | 9 | SEC ↗ ×2 |
| 19 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ ×17 |
| 20 | Bank Of America Corp /De/ | 994.48K | +2.9% | $299.37M | 0.0% | ▲ Add | 3 | SEC ↗ ×7 |
| 21 | Legal & General Group Plc | 924.56K | -1.1% | $278.32M | 0.1% | ▼ Trim | 3 | SEC ↗ ×3 |
| 22 | Manufacturers Life Insurance… | 893.79K | +34.9% | $269.06M | 0.2% | ▲ Add | 3 | SEC ↗ |
| 23 | Northern Trust Corp | 886.90K | +3.4% | $266.98M | 0.0% | ▲ Add | 3 | SEC ↗ ×7 |
| 24 | Royal Bank Of Canada | 875.86K | +10.7% | $263.66M | 0.0% | ▲ Add | 3 | SEC ↗ ×10 |
| 25 | Deutsche Bank Ag\ | 815.40K | +7.1% | $245.46M | 0.1% | ▲ Add | 3 | SEC ↗ ×8 |
| 26 | Qube Research & Technologies Ltd | 798.72K | -4.7% | $240.44M | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 27 | Charles Schwab Investment… | 755.38K | +12.2% | $227.39M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 28 | UBS AM, a distinct business unit of… | 727.85K | +7.4% | $219.10M | 0.0% | ▲ Add | 3 | SEC ↗ ×12 |
| 29 | AQR Capital Management ✦ | 728.04K | -20.3% | $218.99M | 0.1% | ▼ Trim | 9 | SEC ↗ ×9 |
| 30 | Federated Hermes, Inc. | 719.90K | +4.7% | $216.71M | 0.3% | ▲ Add | 3 | SEC ↗ ×3 |
| 31 | UBS Group AG | 627.00K | +36.6% | $188.75M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 32 | Amundi | 617.47K | -17.4% | $185.88M | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 33 | Loomis Sayles & Co L P | 580.19K | +13.3% | $174.65M | 0.2% | ▲ Add | 3 | SEC ↗ ×2 |
| 34 | Goldman Sachs Group ✦ | 574.76K | +22.4% | $173.02M | 0.0% | ▲ Add | 4 | SEC ↗ ×5 |
| 35 | Bank of New York Mellon Corp | 492.07K | +0.2% | $148.13M | 0.0% | ▲ Add | 3 | SEC ↗ ×14 |
| 36 | Franklin Resources Inc | 447.70K | -4.8% | $134.77M | 0.0% | ▼ Trim | 3 | SEC ↗ ×8 |
| 37 | First Trust Advisors Lp | 421.53K | +10.2% | $126.89M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 38 | Raymond James Financial Inc | 392.80K | -3.5% | $118.24M | 0.0% | ▼ Trim | 3 | SEC ↗ ×5 |
| 39 | Dimensional Fund Advisors Lp | 392.02K | +2.0% | $117.97M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 40 | Swiss National Bank | 374.08K | -3.5% | $112.61M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 41 | Massachusetts Financial Services Co… | 350.56K | -29.3% | $105.52M | 0.0% | ▼ Trim | 3 | SEC ↗ ×6 |
| 42 | Canada Pension Plan Investment Board | 334.25K | +60.0% | $100.62M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 43 | Sumitomo Mitsui Trust Group, Inc. | 325.38K | +3.5% | $97.95M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 44 | Millennium Management ✦ | 316.00K | -29.4% | $95.13M | 0.1% | ▼ Trim | 9 | SEC ↗ |
| 45 | Nuveen, LLC | 315.63K | -2.0% | $95.01M | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 46 | Assenagon Asset Management S.A. | 311.39K | +141.6% | $93.74M | 0.1% | ▲ Add | 3 | SEC ↗ ×2 |
| 47 | Wells Fargo & Company/Mn | 310.05K | -9.5% | $93.33M | 0.0% | ▼ Trim | 3 | SEC ↗ ×5 |
| 48 | Nomura Asset Management… | 300.19K | +15.9% | $90.37M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 49 | Susquehanna International Group, Llp | 294.46K | +69.0% | $88.64M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 50 | Pictet Asset Management Holding SA | 278.61K | +17.1% | $83.26M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 51 | Bnp Paribas Financial Markets | 271.02K | -3.5% | $81.59M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 52 | Marshall Wace ✦ | 259.80K | -76.4% | $78.21M | 0.1% | ▼ Trim | 8 | SEC ↗ ×2 |
| 53 | California Public Employees… | 254.05K | +11.4% | $76.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 54 | Korea Investment CORP | 247.66K | +23.6% | $74.55M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 55 | Squarepoint Ops LLC | 234.00K | -45.2% | $70.44M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 56 | Td Asset Management Inc | 233.70K | -17.1% | $70.35M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 57 | Citigroup Inc | 227.79K | -13.5% | $68.57M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 58 | Royal London Asset Management Ltd | 213.59K | -0.7% | $64.30M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 59 | Ameriprise Financial Inc | 204.60K | -14.7% | $61.60M | 0.0% | ▼ Trim | 3 | SEC ↗ ×5 |
| 60 | National Pension Service | 198.29K | +7.9% | $59.69M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 61 | Citadel Advisors ✦ | 191.03K | +715.8% | $57.51M | 0.0% | ▲ Add | 9 | SEC ↗ ×2 |
| 62 | Robeco Institutional Asset… | 188.08K | +48.7% | $56.62M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 63 | Victory Capital Management Inc | 172.84K | -11.8% | $52.03M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 64 | Man Group plc | 170.91K | -26.4% | $51.45M | 0.1% | ▼ Trim | 3 | SEC ↗ ×2 |
| 65 | Mitsubishi UFJ Asset Management… | 168.66K | +10.8% | $50.77M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 66 | Rhumbline Advisers | 165.58K | -15.2% | $49.84M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 67 | CIBC Bancorp USA Inc. | 163.73K | -3.1% | $49.29M | 0.1% | ▼ Trim | 2 | SEC ↗ ×3 |
| 68 | BNP Paribas Asset Management… | 161.77K | -10.1% | $48.63M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 69 | Russell Investments Group, Ltd. | 158.23K | +7.2% | $47.46M | 0.0% | ▲ Add | 3 | SEC ↗ ×13 |
| 70 | Universal- Beteiligungs- und… | 157.22K | +12.5% | $47.23M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 71 | Envestnet Asset Management Inc | 136.40K | -20.6% | $41.06M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 72 | Barclays Plc | 135.52K | -38.6% | $40.79M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 73 | LMR Partners LLP | 134.21K | +79.8% | $40.40M | 0.4% | ▲ Add | 3 | SEC ↗ ×2 |
| 74 | ProShare Advisors LLC | 128.51K | -26.1% | $38.69M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 75 | Sei Investments Co | 121.96K | +21.6% | $36.71M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 76 | Voya Investment Management Llc | 121.90K | -17.9% | $36.70M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 77 | Hsbc Holdings Plc | 115.28K | +28.6% | $34.57M | 0.0% | ▲ Add | 3 | SEC ↗ ×6 |
| 78 | Aviva Plc | 114.53K | +0.5% | $34.48M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 79 | State Board Of Administration Of… | 112.18K | -0.5% | $33.77M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 80 | HighTower Advisors, LLC | 105.05K | -0.8% | $31.62M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 81 | Bridgewater Associates ✦ | 99.58K | -6.6% | $29.98M | 0.1% | ▼ Trim | 4 | SEC ↗ |
| 82 | Schroder Investment Management Group | 95.19K | +42.8% | $28.66M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 83 | Aberdeen Group plc | 94.45K | -31.7% | $28.43M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 84 | Mitsubishi UFJ Trust & Banking Corp | 93.65K | +28.7% | $28.19M | 0.1% | ▲ Add | 3 | SEC ↗ ×2 |
| 85 | FIL Ltd | 92.04K | +0.6% | $27.71M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 86 | Balyasny Asset Management L.P. | 89.51K | New | $26.95M | 0.1% | New | 1 | SEC ↗ |
| 87 | Nomura Asset Management Co Ltd | 88.84K | -4.7% | $26.74M | 0.1% | ▼ Trim | 3 | SEC ↗ ×3 |
| 88 | Caisse De Depot Et Placement Du… | 85.75K | +4213.3% | $25.81M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 89 | Jones Financial Companies Lllp | 80.49K | +9.3% | $23.45M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 90 | Brown Advisory Inc | 77.40K | -42.2% | $23.30M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 91 | State Of Wisconsin Investment Board | 70.17K | +1.9% | $21.12M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 92 | New York State Common Retirement… | 68.12K | +4.1% | $20.51M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 93 | Danske Bank A/S | 64.56K | -2.1% | $19.43M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 94 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 63.27K | -22.2% | $19.04M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 95 | Neuberger Berman Group LLC | 62.02K | -33.7% | $18.67M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 96 | Swedbank AB | 61.89K | -0.5% | $18.63M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 97 | Mirae Asset Global Investments Co.… | 61.53K | +9.1% | $18.52M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 98 | Asset Management One Co., Ltd. | 60.10K | +4.1% | $18.09M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 99 | LPL Financial LLC | 57.89K | -14.4% | $17.43M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 100 | Storebrand Asset Management As | 57.58K | -10.9% | $17.33M | 0.0% | ▼ Trim | 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 | $683.88M | 0.1% |
| Balyasny Asset Management L.P. | $26.95M | 0.1% |
Exited
| Parnassus Investments, Llc | $16.21M | was 0.0% |
| DZ BANK AG Deutsche Zentral… | $1.16M | was 0.0% |
| Lido Advisors, LLC | $390,484 | 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: Q2 2026 ·
Methodology ·
Get this via the API