Security record
ALNY
Alnylam Pharmaceuticals, Inc. · Healthcare · Biotechnology
162Tracked holders
+3Δ holders
107.61MShares 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 | 107.61M | $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 ↗ |
| 2 | Fidelity (FMR) ✦ | 15.02M | +3.0% | $4.52B | 0.2% | ▲ Add | 5 | SEC ↗ |
| 3 | Fidelity (FMR) ✦ | 15.02M | +3.0% | $4.52B | 0.2% | ▲ Add | 5 | SEC ↗ |
| 4 | Fidelity (FMR) ✦ | 15.02M | +3.0% | $4.52B | 0.2% | ▲ Add | 5 | SEC ↗ |
| 5 | Fidelity (FMR) ✦ | 15.02M | +3.0% | $4.52B | 0.2% | ▲ Add | 5 | SEC ↗ |
| 6 | Fidelity (FMR) ✦ | 15.02M | +3.0% | $4.52B | 0.2% | ▲ Add | 5 | SEC ↗ |
| 7 | Fidelity (FMR) ✦ | 15.02M | +3.0% | $4.52B | 0.2% | ▲ Add | 5 | SEC ↗ |
| 8 | Capital World Investors ✦ | 11.14M | +3.2% | $3.35B | 0.4% | ▲ Add | 9 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 25 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 26 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 27 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 28 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 29 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 30 | BlackRock ✦ (passive) | 10.91M | +4.4% | $3.28B | 0.0% | ▲ Add | 5 | SEC ↗ |
| 31 | Capital Research Global Investors | 9.75M | +3.0% | $2.94B | 0.4% | ▲ Add | 3 | SEC ↗ |
| 32 | Vanguard Capital Management Llc | 6.03M | +1.4% | $1.82B | 0.0% | ▲ Add | 2 | SEC ↗ |
| 33 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 34 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 35 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 36 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 37 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 38 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 39 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 40 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 41 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 42 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 43 | Invesco Ltd. | 3.75M | -7.9% | $1.13B | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 44 | State Street Global Advisors ✦ (passive) | 3.56M | +7.0% | $1.07B | 0.0% | ▲ Add | 7 | SEC ↗ |
| 45 | Geode Capital Management ✦ (passive) | 2.64M | -0.9% | $791.35M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 46 | Geode Capital Management ✦ (passive) | 2.64M | -0.9% | $791.35M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 47 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 48 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 49 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 50 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 51 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 52 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 53 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 54 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 55 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 56 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 57 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 58 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 59 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 60 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 61 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 62 | JPMorgan Chase ✦ | 2.68M | -57.7% | $785.32M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 63 | Baillie Gifford ✦ | 2.44M | -2.2% | $734.48M | 0.7% | ▼ Trim | 9 | SEC ↗ |
| 64 | Baillie Gifford ✦ | 2.44M | -2.2% | $734.48M | 0.7% | ▼ Trim | 9 | SEC ↗ |
| 65 | Baillie Gifford ✦ | 2.44M | -2.2% | $734.48M | 0.7% | ▼ Trim | 9 | SEC ↗ |
| 66 | Baillie Gifford ✦ | 2.44M | -2.2% | $734.48M | 0.7% | ▼ Trim | 9 | SEC ↗ |
| 67 | Norges Bank ✦ (passive) | 2.27M | New | $683.88M | 0.1% | New | 1 | SEC ↗ |
| 68 | Wellington Management ✦ | 2.11M | +9.0% | $635.30M | 0.1% | ▲ Add | 9 | SEC ↗ |
| 69 | Wellington Management ✦ | 2.11M | +9.0% | $635.30M | 0.1% | ▲ Add | 9 | SEC ↗ |
| 70 | Wellington Management ✦ | 2.11M | +9.0% | $635.30M | 0.1% | ▲ Add | 9 | SEC ↗ |
| 71 | Wellington Management ✦ | 2.11M | +9.0% | $635.30M | 0.1% | ▲ Add | 9 | SEC ↗ |
| 72 | Wellington Management ✦ | 2.11M | +9.0% | $635.30M | 0.1% | ▲ Add | 9 | SEC ↗ |
| 73 | Wellington Management ✦ | 2.11M | +9.0% | $635.30M | 0.1% | ▲ Add | 9 | SEC ↗ |
| 74 | Wellington Management ✦ | 2.11M | +9.0% | $635.30M | 0.1% | ▲ Add | 9 | SEC ↗ |
| 75 | Dodge & Cox ✦ | 1.96M | +1.4% | $588.63M | 0.3% | ▲ Add | 9 | SEC ↗ |
| 76 | Two Sigma Investments ✦ | 1.88M | -5.8% | $564.71M | 0.4% | ▼ Trim | 9 | SEC ↗ |
| 77 | American Century Companies Inc | 1.85M | +2.9% | $558.10M | 0.2% | ▲ Add | 3 | SEC ↗ |
| 78 | Clearbridge Investments, LLC | 1.26M | -7.1% | $379.14M | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 79 | T. Rowe Price ✦ | 1.15M | -19.8% | $345.94M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 80 | T. Rowe Price ✦ | 1.15M | -19.8% | $345.94M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 81 | D. E. Shaw & Co. ✦ | 1.10M | +4.2% | $332.37M | 0.2% | ▲ Add | 9 | SEC ↗ |
| 82 | D. E. Shaw & Co. ✦ | 1.10M | +4.2% | $332.37M | 0.2% | ▲ Add | 9 | SEC ↗ |
| 83 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 84 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 85 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 86 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 87 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 88 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 89 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 90 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 91 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 92 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 93 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 94 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 95 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 96 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 97 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 98 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 99 | Morgan Stanley ✦ | 1.03M | +2.9% | $310.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 100 | Bank Of America Corp /De/ | 994.48K | +2.9% | $299.37M | 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 | $683.88M | 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): 1 holders, 4.30K shares, $1,422 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.
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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