Alnylam Pharmaceuticals, Inc.
ALNY- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001178670
No open-market purchases or sales by Alnylam Pharmaceuticals, Inc. insiders were filed in the last 90 days; 794 institutions reported holding it in 13F filings for Q2 2026, worth $40.1B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Alnylam Pharmaceuticals, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 793
- −48 vs. Q4 2025
- Shares held
- 131.4M
- +14.7M (+12.6%) vs. Q4 2025
- Total value
- $43.4B
- −$2.95B (−6.4%) vs. Q4 2025
- New holders
- 106
- 323 more added
- Sold out
- 154
- 258 more reduced
11 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ALNY on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 794 | $40.1B |
| Q1 2026 | 793 | $43.4B |
| Q4 2025 | 852 | $52.7B |
| Q3 2025 | 823 | $59.2B |
| Q2 2025 | 653 | $43.1B |
| Q1 2025 | 625 | $34.8B |
| Q4 2024 | 594 | $30.1B |
| Q3 2024 | 569 | $34.1B |
| Q2 2024 | 525 | $29.1B |
| Q1 2024 | 499 | $17.2B |
| Q4 2023 | 501 | $22.4B |
| Q3 2023 | 454 | $20.9B |
| Q2 2023 | 477 | $22.5B |
| Q1 2023 | 478 | $24.0B |
| Q4 2022 | 489 | $28.4B |
| Q3 2022 | 497 | $26.7B |
| Q2 2022 | 424 | $16.6B |
| Q1 2022 | 443 | $18.6B |
| Q4 2021 | 435 | $19.0B |
| Q3 2021 | 407 | $21.1B |
| Q2 2021 | 401 | $19.0B |
| Q1 2021 | 391 | $15.4B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Capital International Ltd | 29,078 | $9.62M | 0.36% | −38,589−57.0% | Reduced |
| IFM Investors Pty Ltd | 27,266 | $9.02M | 0.08% | +1,028+3.9% | Added |
| China Universal Asset Management Co., Ltd. | 27,266 | $9.02M | 0.68% | +1,999+7.9% | Added |
| Parkman Healthcare Partners LLC | 26,916 | $8.91M | 0.92% | −20,787−43.6% | Reduced |
| USS Investment Management Ltd | 26,848 | $8.88M | 0.04% | +624+2.4% | Added |
| CI Private Wealth, LLC | 25,718 | $8.50M | 0.01% | +1,955+8.2% | Added |
| EFG International AG | 25,565 | $8.46M | 0.18% | −835−3.2% | Reduced |
| Jefferies Financial Group Inc. | 25,553 | $8.45M | 0.10% | −769−2.9% | Reduced |
| Capital International Inc | 25,550 | $8.45M | 0.07% | −34,002−57.1% | Reduced |
| Daiwa Securities Group Inc. | 25,364 | $8.39M | 0.02% | −635−2.4% | Reduced |
| U.S. Capital Wealth Advisors, LLC | 24,537 | $8.12M | 0.20% | −2,806−10.3% | Reduced |
| Illinois Municipal Retirement Fund | 24,295 | $8.04M | 0.10% | −1,476−5.7% | Reduced |
| Ossiam | 24,183 | $8.00M | 0.14% | +22,397+1,254.0% | Added |
| Creative Planning | 24,122 | $7.98M | 0.01% | +307+1.3% | Added |
| Voleon Capital Management LP | 24,074 | $7.97M | 0.17% | −27,043−52.9% | Reduced |
| Eurizon Capital SGR S.p.A. | 24,184 | $7.96M | 0.02% | −226−0.9% | Reduced |
| Swiss Life Asset Management Ltd | 23,734 | $7.85M | 0.04% | +1,262+5.6% | Added |
| OP Asset Management Ltd | 23,477 | $7.77M | 0.08% | +8,707+59.0% | Added |
| Citadel Advisors LLC | 23,415 | $7.75M | 0.01% | −15,044−39.1% | Reduced |
| Cetera Investment Advisers | 23,173 | $7.67M | 0.01% | +5,624+32.0% | Added |
| Ieq Capital, LLC | 22,871 | $7.57M | 0.04% | −42,034−64.8% | Reduced |
| Mackenzie Financial Corp | 22,507 | $7.45M | 0.01% | +10,112+81.6% | Added |
| Varma Mutual Pension Insurance Co | 21,100 | $6.98M | 0.04% | −5,000−19.2% | Reduced |
| 683 Capital Management, LLC | 21,000 | $6.95M | 0.64% | +17,218+455.3% | Added |
| Utah Retirement Systems | 20,601 | $6.82M | 0.07% | −124−0.6% | Reduced |
| KBC Group NV | 20,524 | $6.79M | 0.02% | −327,670−94.1% | Reduced |
| Thrivent Financial for Lutherans | 20,470 | $6.77M | 0.01% | −171−0.8% | Reduced |
| Cerity Partners LLC | 20,256 | $6.70M | 0.01% | −4,322−17.6% | Reduced |
| Oppenheimer Asset Management Inc. | 19,842 | $6.57M | 0.07% | +4,250+27.3% | Added |
| Police & Firemen's Retirement System of New Jersey | 19,653 | $6.50M | 0.06% | +358+1.9% | Added |
| Jump Financial, LLC | 19,152 | $6.34M | 0.09% | −11,410−37.3% | Reduced |
| Teacher Retirement System of Texas | 18,830 | $6.23M | 0.03% | −1,205−6.0% | Reduced |
| Toronto Dominion Bank | 18,602 | $6.15M | 0.01% | −4,597−19.8% | Reduced |
| Silvant Capital Management LLC | 18,258 | $6.04M | 0.21% | +294+1.6% | Added |
| Liontrust Investment Partners LLP | 18,218 | $6.03M | 0.10% | −169−0.9% | Reduced |
| British Columbia Investment Management Corp | 18,208 | $6.02M | 0.04% | −5,012−21.6% | Reduced |
| Public Sector Pension Investment Board | 18,014 | $5.96M | 0.02% | +18,014 | New |
| Hantz Financial Services, Inc. | 17,673 | $5.85M | 0.09% | +6,350+56.1% | Added |
| Slow Capital, Inc. | 17,461 | $5.78M | 0.75% | +17,461 | New |
| Natixis | 17,076 | $5.65M | 0.02% | −22,703−57.1% | Reduced |
| Portman Square Capital LLP | 16,924 | $5.60M | 0.85% | +14,467+588.8% | Added |
| Lazard Asset Management LLC | 16,280 | $5.39M | 0.01% | +6,128+60.4% | Added |
| Macquarie Group Ltd | 16,047 | $5.31M | 0.03% | −9,234−36.5% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 15,943 | $5.28M | 0.04% | +74+0.5% | Added |
| iA Global Asset Management Inc. | 15,922 | $5.27M | 0.07% | −1,858−10.4% | Reduced |
| MML Investors Services, LLC | 15,482 | $5.12M | 0.01% | −2,168−12.3% | Reduced |
| Shelton Capital Management | 14,837 | $4.91M | 0.11% | −227−1.5% | Reduced |
| Profund Advisors LLC | 14,647 | $4.85M | 0.18% | −942−6.0% | Reduced |
| Elo Mutual Pension Insurance Co | 14,621 | $4.84M | 0.08% | −2,820−16.2% | Reduced |
| Nomura Holdings Inc | 14,299 | $4.73M | 0.04% | −8,138−36.3% | Reduced |
| Assetmark, Inc | 14,207 | $4.70M | 0.01% | −1,826−11.4% | Reduced |
| La Banque Postale Asset Management SA | 14,206 | $4.70M | 0.06% | +6,416+82.4% | Added |
| Rakuten Investment Management, Inc. | 14,431 | $4.56M | 0.01% | +1,747+13.8% | Added |
| Dark Forest Capital Management LP | 13,707 | $4.54M | 0.40% | +6,992+104.1% | Added |
| Mirova | 13,678 | $4.53M | 0.18% | +13,678 | New |
| Himension Fund | 13,169 | $4.36M | 0.33% | +2,984+29.3% | Added |
| Nordea Investment Management AB | 13,346 | $4.35M | 0.00% | +491+3.8% | Added |
| Empire Life Investments Inc. | 13,215 | $4.34M | 0.26% | +13,215 | New |
| Capula Management Ltd | 13,115 | $4.34M | 0.04% | −66−0.5% | Reduced |
| Bank Julius Baer & Co. Ltd, Zurich | 13,281 | $4.26M | 0.01% | +13,281 | New |
| Fred Alger Management, LLC | 12,597 | $4.17M | 0.02% | +12,597 | New |
| Captrust Financial Advisors | 12,503 | $4.14M | 0.01% | −752−5.7% | Reduced |
| Ilmarinen Mutual Pension Insurance Co | 12,500 | $4.14M | 0.03% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 12,445 | $4.12M | 0.02% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 12,322 | $4.08M | 0.00% | −356−2.8% | Reduced |
| Privium Fund Management B.V. | 12,222 | $4.04M | 0.84% | +12,222 | New |
| JustInvest LLC | 12,215 | $4.04M | 0.04% | −1,512−11.0% | Reduced |
| Traynor Capital Management, Inc. | 12,592 | $3.98M | 0.24% | +1,022+8.8% | Added |
| Credit Agricole S A | 11,751 | $3.89M | 0.01% | −9,789−45.4% | Reduced |
| Federation des caisses Desjardins du Quebec | 11,731 | $3.88M | 0.01% | −818−6.5% | Reduced |
| Wealthfront Advisers LLC | 11,587 | $3.83M | 0.01% | −6,667−36.5% | Reduced |
| CWM, LLC | 11,580 | $3.83M | 0.01% | −13,895−54.5% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 11,361 | $3.76M | 0.07% | +11,361 | New |
| ASR Vermogensbeheer N.V. | 11,223 | $3.71M | 0.04% | +201+1.8% | Added |
| Cullen/Frost Bankers, Inc. | 10,999 | $3.64M | 0.04% | −34−0.3% | Reduced |
| Commonwealth Equity Services, LLC | 10,577 | $3.50M | 0.00% | +832+8.5% | Added |
| Motley Fool Asset Management LLC | 10,492 | $3.47M | 0.15% | −2,034−16.2% | Reduced |
| Silvercrest Asset Management Group LLC | 10,429 | $3.45M | 0.02% | +19+0.2% | Added |
| Panagora Asset Management Inc | 10,343 | $3.42M | 0.01% | −20,500−66.5% | Reduced |
| Gulf International Bank (UK) Ltd | 10,197 | $3.37M | 0.08% | +3,570+53.9% | Added |
| Martingale Asset Management L P | 10,114 | $3.35M | 0.08% | +990+10.9% | Added |
| Raiffeisen Bank International AG | 10,413 | $3.29M | 0.05% | −1,093−9.5% | Reduced |
| Amalgamated Bank | 9,937 | $3.29M | 0.03% | −742−6.9% | Reduced |
| Atria Investments LLC | 9,874 | $3.27M | 0.04% | +3,701+60.0% | Added |
| Harvest Fund Management Co., Ltd | 9,854 | $3.26M | 0.14% | −465−4.5% | Reduced |
| PEAK6 LLC | 9,716 | $3.21M | 0.09% | +9,714+485,700.0% | Added |
| O'Shaughnessy Asset Management, LLC | 9,637 | $3.19M | 0.02% | −290−2.9% | Reduced |
| Tower Research Capital LLC (TRC) | 9,627 | $3.19M | 0.08% | +3,786+64.8% | Added |
| Vestmark Advisory Solutions, Inc. | 9,589 | $3.17M | 0.04% | +811+9.2% | Added |
| Fifth Third Bancorp | 9,568 | $3.17M | 0.01% | +9,441+7,433.9% | Added |
| Commerce Bank | 9,480 | $3.14M | 0.02% | −1,053−10.0% | Reduced |
| Blair William & Co | 9,430 | $3.12M | 0.01% | −344−3.5% | Reduced |
| Nisa Investment Advisors, LLC | 9,357 | $3.10M | 0.01% | −292−3.0% | Reduced |
| Janney Montgomery Scott LLC | 9,339 | $3.09M | 0.01% | +2,836+43.6% | Added |
| Transamerica Financial Advisors, Inc. | 9,303 | $3.08M | 0.26% | +697+8.1% | Added |
| NewEdge Wealth, LLC | 9,201 | $3.04M | 0.04% | +1,671+22.2% | Added |
| Mutual of America Capital Management LLC | 8,952 | $2.96M | 0.03% | −6,514−42.1% | Reduced |
| Blackstone Group Inc. | 8,775 | $2.90M | 0.01% | +8,775 | New |
| Louisiana State Employees Retirement System | 8,700 | $2.88M | 0.05% | −100−1.1% | Reduced |
| Mercer Global Advisors Inc | 8,579 | $2.84M | 0.00% | −3,207−27.2% | Reduced |