Alnylam Pharmaceuticals, Inc. ALNY
163.58 USD +3.69 (+2.31%)
Nov 4, 2026, 9:47 AM EST
163.79 Day range 170.49
158.00 52-week range 473.29
- YTD
- -58.86%
- 1 year
- -61.37%
Held by funds
363 US ETFs and mutual funds hold ALNY · largest positions
Ownership
Held by insiders 0.18%
Held by institutions 101.64%
Float held by institutions 101.83%
Institutions 1,182
Top institutional holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| FMR, LLC | 11.22% | 15,023,962 | 2.40B | Jun 29, 2026 |
| Capital World Investors | 8.32% | 11,144,846 | 1.78B | Jun 29, 2026 |
| Blackrock Inc. | 8.14% | 10,907,675 | 1.74B | Jun 29, 2026 |
| Capital Research Global Investors | 7.28% | 9,750,699 | 1.56B | Jun 29, 2026 |
| Vanguard Portfolio Management LLC | 4.88% | 6,538,390 | 1.05B | Jun 29, 2026 |
| Vanguard Capital Management LLC | 4.50% | 6,029,478 | 964.05M | Jun 29, 2026 |
Top mutual fund holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| Growth Fund of America | 6.69% | 8,960,487 | 1.43B | Sep 29, 2026 |
| Amcap Fund | 3.38% | 4,526,680 | 723.77M | Sep 29, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund | 3.16% | 4,239,087 | 677.79M | Jun 29, 2026 |
| VANGUARD INDEX FUNDS-Vanguard Mid-Cap Index Fund | 2.16% | 2,893,030 | 462.57M | Jun 29, 2026 |
| Invesco QQQ Trust, Series 1 | 2.09% | 2,794,074 | 446.74M | Sep 29, 2026 |
| VANGUARD SPECIALIZED FUNDS-Vanguard Health Care Fund | 1.60% | 2,136,580 | 341.62M | Jul 30, 2026 |
Insiders
| Insider | Relation | Latest transaction | Date | Shares held |
|---|---|---|---|---|
| BONNEY MICHAEL W | Director | Sale | Aug 17, 2025 | 20,804 |
| FITZGERALD KEVIN JOSEPH | Officer | Sale | Mar 4, 2026 | 21,106 |
| GARG PUSHKAL | Officer | Sale | Mar 4, 2026 | 19,374 |
| GREENSTREET YVONNE L | Chief Executive Officer | Stock Award(Grant) | Sep 17, 2026 | 96,209 |
| POULTON JEFFREY V | Chief Financial Officer | Sale | Mar 3, 2026 | 61,862 |
| PYOTT DAVID E I | Director | Sale | May 31, 2026 | 29,482 |