ALNY NASDAQ
Alnylam Pharmaceuticals, Inc.
1W: +2.4%
1M: -3.2%
3M: -10.6%
YTD: -24.9%
1Y: +3.0%
3Y: +57.4%
5Y: +121.5%
$297.45
-3.06 (-1.02%)
Weekly Expected Move ±4.3%
$262
$275
$287
$299
$312
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🏦 Institutional Activity
Latest: Q1 2026947
Institutions Holding
-44 vs prior
93.5%
Ownership
-32.33%
98
New
283
Increased
468
Reduced
237
Closed
👔 Insider Trades
25 records| Date | Name | Title | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-20 | Reitan Colleen F | director | A-Grant/Award | 671 | $— | $0 | Filing |
| 2026-05-20 | SCHULMAN AMY W | director | A-Grant/Award | 838 | $— | $0 | Filing |
| 2026-05-20 | Sigal Charles Elliott | director | A-Grant/Award | 671 | $— | $0 | Filing |
| 2026-05-20 | Ausiello Dennis A | director | A-Grant/Award | 671 | $— | $0 | Filing |
| 2026-04-06 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 199 | $333.94 | $66K | Filing |
| 2026-04-06 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 293 | $331.89 | $97K | Filing |
| 2026-04-06 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 829 | $330.46 | $274K | Filing |
| 2026-04-06 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 909 | $329.76 | $300K | Filing |
| 2026-04-06 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 56 | $320.14 | $18K | Filing |
| 2026-04-02 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 224 | $321.64 | $72K | Filing |
| 2026-04-02 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 86 | $319.69 | $27K | Filing |
| 2026-04-02 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 147 | $320.62 | $47K | Filing |
| 2026-04-02 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 245 | $322.86 | $79K | Filing |
| 2026-04-02 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 81 | $323.64 | $26K | Filing |
| 2026-04-02 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 8 | $325.49 | $3K | Filing |
| 2026-04-02 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 209 | $318.47 | $67K | Filing |
| 2026-04-02 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 359 | $317.44 | $114K | Filing |
| 2026-04-02 | McLaughlin Melissa | officer: chief human resources officer | S-Sale | 265 | $316.61 | $84K | Filing |
| 2026-03-05 | Fitzgerald Kevin Joseph | officer: cso & evp, head of research | S-Sale | 148 | $324.60 | $48K | Filing |
| 2026-03-05 | Garg Pushkal | officer: evp chief r&d | S-Sale | 500 | $326.08 | $163K | Filing |
| 2026-03-05 | Garg Pushkal | officer: evp chief r&d | S-Sale | 510 | $324.59 | $166K | Filing |
| 2026-03-05 | Garg Pushkal | officer: evp chief r&d | S-Sale | 740 | $323.55 | $239K | Filing |
| 2026-03-05 | Fitzgerald Kevin Joseph | officer: cso & evp, head of research | S-Sale | 153 | $326.24 | $50K | Filing |
| 2026-03-05 | Fitzgerald Kevin Joseph | officer: cso & evp, head of research | S-Sale | 233 | $323.25 | $75K | Filing |
| 2026-03-05 | Fitzgerald Kevin Joseph | officer: cso & evp, head of research | S-Sale | 124 | $321.81 | $40K | Filing |
🏛️ Congressional Trades
13 records| Date | Politician | Chamber | Type | Amount | Filing |
|---|---|---|---|---|---|
| 2025-05-12 | Jefferson Shreve | House | Sell | $15,001 - $50,000 | Filing |
| 2024-01-29 | Josh Gottheimer | House | Sell | $1,001 - $15,000 | Filing |
| 2024-01-11 | Josh Gottheimer | House | Buy | $1,001 - $15,000 | Filing |
| 2023-12-11 | Josh Gottheimer | House | Sell | $1,001 - $15,000 | Filing |
| 2023-03-06 | Daniel Goldman | House | Buy | $15,001 - $50,000 | Filing |
| 2023-02-10 | Ro Khanna | House | Sell | $1,001 - $15,000 | Filing |
| 2023-01-31 | Daniel Goldman | House | Sell | $15,001 - $50,000 | Filing |
| 2022-12-06 | Ro Khanna | House | Buy | $1,001 - $15,000 | Filing |
| 2022-09-28 | Josh Gottheimer | House | Buy | $1,001 - $15,000 | Filing |
| 2020-11-13 | Josh Gottheimer | House | Sell | $1,001 - $15,000 | Filing |
| 2020-04-06 | Josh Gottheimer | House | Buy | $1,001 - $15,000 | Filing |
| 2018-10-18 | Josh Gottheimer | House | Sell | $1,001 - $15,000 | Filing |
| 2018-06-01 | Josh Gottheimer | House | Buy | $1,001 - $15,000 | Filing |
🏦 Top Institutional Holders
20 holders| Holder | Shares | Value | Date Reported | Filing | |
|---|---|---|---|---|---|
| FMR LLC | 14,579,166 | $4.8B | -1,322,983 | 2026-03-31 | Filing |
| Capital World Investors | 10,802,348 | $3.6B | -5,499,424 | 2026-03-31 | Filing |
| BlackRock, Inc. | 10,444,908 | $3.5B | +44,034 | 2026-03-31 | Filing |
| Capital Research Global Investors | 9,471,181 | $3.1B | +2,691,473 | 2026-03-31 | Filing |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6,491,280 | $2.1B | +6,491,280 | 2026-03-31 | Filing |
| JPMORGAN CHASE & CO | 6,323,752 | $2.0B | +1,603,753 | 2026-03-31 | Filing |
| VANGUARD CAPITAL MANAGEMENT LLC | 5,946,706 | $2.0B | +5,946,706 | 2026-03-31 | Filing |
| STATE STREET CORP | 3,322,698 | $1.1B | +93,742 | 2026-03-31 | Filing |
| GEODE CAPITAL MANAGEMENT, LLC | 2,660,385 | $885M | +9,663 | 2026-03-31 | Filing |
| BAILLIE GIFFORD & CO | 2,493,866 | $825M | -107,113 | 2026-03-31 | Filing |
| WELLINGTON MANAGEMENT GROUP LLP | 1,935,925 | $641M | +306,994 | 2026-03-31 | Filing |
| Dodge & Cox | 1,929,253 | $638M | -35,162 | 2026-03-31 | Filing |
| AMERICAN CENTURY COMPANIES INC | 1,802,363 | $596M | +317,202 | 2026-03-31 | Filing |
| Clearbridge Investments, LLC | 1,356,036 | $449M | +759,023 | 2026-03-31 | Filing |
| Orbis Allan Gray Ltd | 1,334,825 | $442M | -283,394 | 2026-03-31 | Filing |
| Invesco Ltd. | 1,291,726 | $427M | -874,114 | 2026-03-31 | Filing |
| BANK OF AMERICA CORP /DE | 966,912 | $320M | +281,735 | 2026-03-31 | Filing |
| Legal & General Group Plc | 934,881 | $309M | -26,615 | 2026-03-31 | Filing |
| AQR CAPITAL MANAGEMENT LLC | 913,104 | $298M | -6,855 | 2026-03-31 | Filing |
| NORTHERN TRUST CORP | 858,120 | $284M | +378 | 2026-03-31 | Filing |