Security record · archived quarter
ALNY
Alnylam Pharmaceuticals, Inc. · Healthcare · Biotechnology
161Tracked holders
-2Δ holders
108.78MShares held
$35.89BReported value
+4New positions
−7Exits
Momentum inputs (comparable managers):
holder breadth -1.2% ·
share flow -0.4% ·
net new positions -1.9%
· formula
Broad distribution: falling shares and fewer 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 | 220.72K | $53.70M | n/a | n/a |
| 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 | n/a | −1 |
| Q1 2025 | 19 | +2 | 40.24M | $10.86B | +3 | −1 |
| Q4 2024 | 17 | 0 | 41.95M | $9.87B | n/a | n/a |
| Q3 2024 | 16 | +1 | 39.28M | $10.80B | +2 | −1 |
| Q2 2024 | 15 | n/a | 40.30M | $9.79B | n/a | n/a |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 14.58M | -8.3% | $4.82B | 0.3% | ▼ Trim | 4 | SEC ↗ ×7 |
| 2 | Capital World Investors ✦ | 10.80M | -33.7% | $3.57B | 0.5% | ▼ Trim | 8 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 10.44M | +0.4% | $3.46B | 0.1% | ▲ Add | 4 | SEC ↗ ×23 |
| 4 | Capital Research Global Investors | 9.47M | +39.7% | $3.13B | 0.5% | ▲ Add | 2 | SEC ↗ |
| 5 | JPMorgan Chase ✦ | 6.32M | +34.0% | $2.00B | 0.1% | ▲ Add | 3 | SEC ↗ ×19 |
| 6 | Vanguard Capital Management Llc | 5.95M | n/a | $1.97B | 0.0% | n/c | 1 | SEC ↗ |
| 7 | Invesco Ltd. | 4.08M | -20.6% | $1.35B | 0.1% | ▼ Trim | 2 | SEC ↗ ×22 |
| 8 | State Street Global Advisors ✦ (passive) | 3.32M | +2.9% | $1.10B | 0.0% | ▲ Add | 6 | SEC ↗ |
| 9 | Geode Capital Management ✦ (passive) | 2.66M | +0.4% | $884.57M | 0.1% | ▲ Add | 8 | SEC ↗ ×2 |
| 10 | Baillie Gifford ✦ | 2.49M | -4.1% | $825.15M | 0.8% | ▼ Trim | 8 | SEC ↗ ×4 |
| 11 | Two Sigma Investments ✦ | 1.99M | +223.4% | $659.28M | 0.6% | ▲ Add | 8 | SEC ↗ |
| 12 | Wellington Management ✦ | 1.94M | +18.9% | $640.54M | 0.1% | ▲ Add | 8 | SEC ↗ ×7 |
| 13 | Dodge & Cox ✦ | 1.93M | -1.8% | $638.33M | 0.4% | ▼ Trim | 8 | SEC ↗ |
| 14 | American Century Companies Inc | 1.80M | +21.4% | $596.35M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 15 | T. Rowe Price ✦ | 1.43M | -15.9% | $474.06M | 0.1% | ▼ Trim | 8 | SEC ↗ ×2 |
| 16 | Clearbridge Investments, LLC | 1.36M | +127.1% | $448.67M | 0.4% | ▲ Add | 2 | SEC ↗ |
| 17 | Marshall Wace ✦ | 1.10M | +99.9% | $363.73M | 0.4% | ▲ Add | 7 | SEC ↗ ×3 |
| 18 | D. E. Shaw & Co. ✦ | 1.06M | +138.3% | $350.41M | 0.3% | ▲ Add | 8 | SEC ↗ ×2 |
| 19 | Morgan Stanley ✦ | 1.00M | +3.4% | $331.76M | 0.0% | ▲ Add | 3 | SEC ↗ ×16 |
| 20 | Bank Of America Corp /De/ | 966.91K | +41.1% | $319.92M | 0.0% | ▲ Add | 2 | SEC ↗ ×7 |
| 21 | Legal & General Group Plc | 934.88K | -2.8% | $309.32M | 0.1% | ▼ Trim | 2 | SEC ↗ ×3 |
| 22 | AQR Capital Management ✦ | 913.10K | -0.8% | $297.87M | 0.1% | ▼ Trim | 8 | SEC ↗ ×11 |
| 23 | Northern Trust Corp | 858.12K | 0.0% | $283.93M | 0.0% | ▲ Add | 2 | SEC ↗ ×7 |
| 24 | Qube Research & Technologies Ltd | 838.19K | +8.2% | $277.33M | 0.4% | ▲ Add | 2 | SEC ↗ |
| 25 | Royal Bank Of Canada | 791.51K | +33.8% | $261.89M | 0.1% | ▲ Add | 2 | SEC ↗ ×9 |
| 26 | Deutsche Bank Ag\ | 761.46K | +7.0% | $251.95M | 0.1% | ▲ Add | 2 | SEC ↗ ×7 |
| 27 | Amundi | 747.54K | +22.8% | $247.34M | 0.1% | ▲ Add | 2 | SEC ↗ ×4 |
| 28 | Federated Hermes, Inc. | 687.82K | +9.5% | $227.58M | 0.4% | ▲ Add | 2 | SEC ↗ ×3 |
| 29 | UBS AM, a distinct business unit of… | 677.52K | +3.9% | $224.17M | 0.0% | ▲ Add | 2 | SEC ↗ ×12 |
| 30 | Charles Schwab Investment… | 673.36K | +3.9% | $222.79M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 31 | Manufacturers Life Insurance… | 662.37K | +944.5% | $219.16M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 32 | Loomis Sayles & Co L P | 512.10K | +4.8% | $169.44M | 0.2% | ▲ Add | 2 | SEC ↗ ×2 |
| 33 | Massachusetts Financial Services Co… | 496.00K | +0.1% | $164.11M | 0.1% | ▲ Add | 2 | SEC ↗ ×6 |
| 34 | Bank of New York Mellon Corp | 491.20K | -2.6% | $162.52M | 0.0% | ▼ Trim | 2 | SEC ↗ ×15 |
| 35 | Franklin Resources Inc | 470.39K | -40.3% | $155.64M | 0.0% | ▼ Trim | 2 | SEC ↗ ×8 |
| 36 | Goldman Sachs Group ✦ | 469.39K | +25.1% | $155.31M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 37 | UBS Group AG | 458.87K | -44.4% | $151.83M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 38 | Millennium Management ✦ | 447.89K | +493.8% | $148.19M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 39 | Squarepoint Ops LLC | 426.72K | +21.6% | $141.19M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 40 | Raymond James Financial Inc | 406.96K | +4.7% | $129.97M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 41 | Swiss National Bank | 387.72K | +7.9% | $128.28M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 42 | Dimensional Fund Advisors Lp | 384.20K | +27.3% | $127.07M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 43 | First Trust Advisors Lp | 382.70K | +48.9% | $126.62M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 44 | Wells Fargo & Company/Mn | 342.76K | +33.0% | $113.41M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 45 | Nuveen, LLC | 322.23K | -43.0% | $106.62M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 46 | Sumitomo Mitsui Trust Group, Inc. | 314.42K | -4.1% | $104.03M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 47 | Td Asset Management Inc | 281.85K | +4.7% | $93.26M | 0.1% | ▲ Add | 2 | SEC ↗ ×2 |
| 48 | Bnp Paribas Financial Markets | 280.96K | -27.9% | $92.96M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 49 | Allspring Global Investments… | 281.79K | +1.1% | $92.63M | 0.2% | ▲ Add | 2 | SEC ↗ ×3 |
| 50 | Citigroup Inc | 263.38K | +52.6% | $87.14M | 0.1% | ▲ Add | 2 | SEC ↗ ×3 |
| 51 | Nomura Asset Management… | 258.90K | -16.9% | $85.66M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 52 | Ameriprise Financial Inc | 239.94K | +32.5% | $79.39M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 53 | Pictet Asset Management Holding SA | 237.92K | -24.7% | $77.49M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 54 | Man Group plc | 232.37K | +61.1% | $76.88M | 0.2% | ▲ Add | 2 | SEC ↗ ×2 |
| 55 | California Public Employees… | 228.00K | -3.8% | $75.44M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 56 | Barclays Plc | 220.62K | -0.9% | $73.00M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 57 | Royal London Asset Management Ltd | 215.07K | -15.0% | $71.16M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 58 | Canada Pension Plan Investment Board | 208.94K | -19.2% | $69.13M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 59 | Korea Investment CORP | 200.32K | +5.6% | $66.28M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 60 | California State Teachers… | 196.86K | -2.5% | $65.14M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 61 | Victory Capital Management Inc | 195.94K | -11.3% | $64.83M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 62 | Rhumbline Advisers | 195.28K | 0.0% | $64.61M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 63 | National Pension Service | 183.79K | +9.3% | $60.81M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | BNP Paribas Asset Management… | 180.01K | +64.2% | $59.56M | 0.1% | ▲ Add | 2 | SEC ↗ ×2 |
| 65 | Susquehanna International Group, Llp | 174.27K | -9.2% | $57.66M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 66 | ProShare Advisors LLC | 174.01K | -17.6% | $57.58M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 67 | Envestnet Asset Management Inc | 171.80K | +42.5% | $56.84M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | CIBC Bancorp USA Inc. | 169.03K | n/a | $55.92M | 0.1% | n/c | 1 | SEC ↗ ×3 |
| 69 | Mitsubishi UFJ Asset Management… | 152.20K | +9.7% | $50.36M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | Voya Investment Management Llc | 148.49K | -25.2% | $49.13M | 0.1% | ▼ Trim | 2 | SEC ↗ ×3 |
| 71 | Janus Henderson Group Plc | 147.09K | +7.8% | $48.66M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 72 | Russell Investments Group, Ltd. | 147.53K | -11.0% | $48.47M | 0.1% | ▼ Trim | 2 | SEC ↗ ×13 |
| 73 | Universal- Beteiligungs- und… | 139.71K | +12.1% | $46.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 74 | Aberdeen Group plc | 138.33K | +4.1% | $45.77M | 0.1% | ▲ Add | 2 | SEC ↗ ×3 |
| 75 | Brown Advisory Inc | 133.95K | +438.9% | $44.32M | 0.1% | ▲ Add | 2 | SEC ↗ ×3 |
| 76 | Hrt Financial Lp | 132.93K | New | $43.98M | 0.1% | New | 1 | SEC ↗ ×2 |
| 77 | Assenagon Asset Management S.A. | 128.90K | +403.7% | $42.65M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 78 | Robeco Institutional Asset… | 126.46K | -12.6% | $41.84M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 79 | Aviva Plc | 114.00K | +3.0% | $37.72M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 80 | State Board Of Administration Of… | 112.72K | -1.6% | $37.30M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 81 | Bridgewater Associates ✦ | 106.59K | +24.5% | $35.27M | 0.2% | ▲ Add | 3 | SEC ↗ |
| 82 | HighTower Advisors, LLC | 105.86K | -0.6% | $35.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 83 | Sei Investments Co | 100.31K | -9.7% | $33.19M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 84 | Neuberger Berman Group LLC | 93.50K | -18.8% | $30.94M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 85 | Nomura Asset Management Co Ltd | 93.22K | -1.1% | $30.85M | 0.1% | ▼ Trim | 2 | SEC ↗ ×3 |
| 86 | FIL Ltd | 91.50K | -2.8% | $30.27M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 87 | Hsbc Holdings Plc | 89.62K | -49.9% | $29.64M | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 88 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 81.33K | +1.5% | $26.89M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 89 | Zurcher Kantonalbank (Zurich… | 74.92K | -16.6% | $24.79M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 90 | LMR Partners LLP | 74.66K | +26.5% | $24.70M | 0.3% | ▲ Add | 2 | SEC ↗ ×2 |
| 91 | Mitsubishi UFJ Trust & Banking Corp | 72.78K | -8.3% | $24.08M | 0.1% | ▼ Trim | 2 | SEC ↗ ×3 |
| 92 | Jones Financial Companies Lllp | 73.64K | +9341.4% | $23.37M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 93 | Ensign Peak Advisors, Inc | 69.65K | +20.2% | $23.04M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 94 | State Of Wisconsin Investment Board | 68.88K | +4.3% | $22.79M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 95 | LPL Financial LLC | 67.64K | +47.3% | $22.38M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 96 | Schroder Investment Management Group | 66.66K | n/a | $22.06M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 97 | Danske Bank A/S | 65.95K | -1.9% | $21.82M | 0.1% | ▼ Trim | 2 | SEC ↗ ×3 |
| 98 | New York State Common Retirement… | 65.42K | +1.6% | $21.65M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 99 | Storebrand Asset Management As | 64.59K | -13.6% | $21.37M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 100 | National Bank Of Canada /Fi/ | 63.61K | -4.2% | $21.05M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Hrt Financial Lp | $43.98M | 0.1% |
Exited
| Norges Bank | $895.82M | was 0.1% |
| Arrowstreet Capital | $448.22M | was 0.3% |
| 1832 Asset Management L.P. | $175.02M | was 0.2% |
| Jennison Associates Llc | $110.45M | was 0.1% |
| Cibc World Market Inc. | $4.86M | was 0.0% |
| Bamco Inc /Ny/ | $1.39M | was 0.0% |
| Balyasny Asset Management L.P. | $1.20M | 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: Q1 2026 ·
Methodology ·
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