Alnylam Pharmaceuticals, Inc.

ALNY

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0001178670

SEC filings (opens in a new tab)

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 2021

Institutional positions in Alnylam Pharmaceuticals, Inc. as of Mar 31, 2021. 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: 391; No complete 13F data for Q4 2020
Shares held: 109.4M; No complete 13F data for Q4 2020
Total value: $15.4B; No complete 13F data for Q4 2020

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.

Institutional holdersQ1 2021: 391 institutions

Value heldQ1 2021: $15.4B

Institutions holding ALNY and their total value by quarter
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 2021

Shares, value and share of portfolio for each institution holding Alnylam Pharmaceuticals, Inc..

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding ALNY in Q1 2021
Institution	Shares	Value	% of portfolio	Change in shares	Action
FMR LLC	17,549,901	$2.48B	0.21%	–	–
Vanguard Group Inc	10,585,821	$1.49B	0.04%	–	–
Baillie Gifford & Co	10,074,963	$1.42B	0.80%	–	–
Wellington Management Group LLP	9,147,950	$1.29B	0.23%	–	–
BlackRock Inc.	9,012,485	$1.27B	0.04%	–	–
Price T Rowe Associates Inc	5,575,213	$787.2M	0.08%	–	–
Dodge & Cox	4,321,627	$610.2M	0.44%	–	–
State Street Corp	2,630,856	$371.5M	0.02%	–	–
JPMorgan Chase & Co	2,178,401	$307.6M	0.04%	–	–
Morgan Stanley	1,785,954	$252.2M	0.04%	–	–
RTW Investments, LP	1,683,362	$237.7M	3.71%	–	–
Bellevue Group AG	1,627,114	$229.7M	2.43%	–	–
Manufacturers Life Insurance Company, The	1,604,858	$226.6M	0.20%	–	–
Massachusetts Financial Services Co	1,462,062	$206.4M	0.06%	–	–
Geode Capital Management, LLC	1,386,299	$195.5M	0.03%	–	–
Invesco Ltd.	1,216,103	$171.7M	0.05%	–	–
American Century Companies Inc	1,094,521	$154.5M	0.11%	–	–
Federated Hermes, Inc.	988,718	$139.6M	0.27%	–	–
Norges Bank	962,304	$135.9M	0.03%	–	–
Gilder Gagnon Howe & Co LLC	929,643	$131.3M	0.71%	–	–
Casdin Capital, LLC	880,000	$124.2M	3.70%	–	–
Maverick Capital LtdSuperinvestorMaverick Capital	796,234	$112.4M	1.05%	–	–
Northern Trust Corp	750,212	$105.9M	0.02%	–	–
Artal Group S.A.	750,000	$105.9M	2.24%	–	–
Farallon Capital Management, L.L.C.	700,000	$98.8M	0.51%	–	–
Goldman Sachs Group Inc	694,310	$98.0M	0.03%	–	–
UBS Asset Management Americas Inc	665,529	$94.0M	0.04%	–	–
Alkeon Capital Management LLC	658,582	$93.0M	0.35%	–	–
Legal & General Group Plc	646,438	$91.3M	0.03%	–	–
Blackstone Group Inc.	637,827	$90.1M	0.21%	–	–
Nuveen Asset Management, LLC	596,000	$84.1M	0.03%	–	–
Mitsubishi UFJ Trust & Banking Corp	522,091	$73.7M	0.16%	–	–
Pictet Asset Management Ltd	457,413	$64.6M	0.08%	–	–
Swiss National Bank	446,824	$63.1M	0.04%	–	–
Point72 Asset Management, L.P.	439,937	$62.1M	0.32%	–	–
First Trust Advisors LP	432,130	$61.0M	0.07%	–	–
Avidity Partners Management LP	427,969	$60.4M	1.69%	–	–
Bank of New York Mellon Corp	421,814	$59.6M	0.01%	–	–
Rockefeller Capital Management L.P.	400,560	$56.6M	0.38%	–	–
Sumitomo Mitsui Trust Holdings, Inc.	370,384	$52.3M	0.03%	–	–
Capital World Investors	352,546	$49.8M	0.01%	–	–
Swedbank AB	340,319	$48.0M	0.10%	–	–
Charles Schwab Investment Management Inc	334,213	$47.2M	0.02%	–	–
California Public Employees Retirement System	320,047	$45.2M	0.03%	–	–
Rock Springs Capital Management LP	300,000	$42.4M	0.92%	–	–
Bank of America Corp	284,691	$40.2M	0.00%	–	–
Deutsche Bank AG	258,582	$36.5M	0.02%	–	–
Eagle Asset Management Inc	256,158	$36.3M	0.16%	–	–
Artisan Partners Limited Partnership	228,188	$32.2M	0.04%	–	–
Dimensional Fund Advisors LP	227,702	$32.2M	0.01%	–	–
Credit Suisse AG	227,197	$32.1M	0.02%	–	–
Bridger Management, LLC	226,504	$32.0M	2.99%	–	–
California State Teachers Retirement System	216,276	$30.5M	0.04%	–	–
Amundi Asset Management US, Inc.	216,007	$30.5M	0.02%	–	–
APG Asset Management N.V.	238,935	$28.7M	0.05%	–	–
Polar Capital Holdings Plc	198,500	$28.0M	0.17%	–	–
TD Asset Management Inc	192,022	$27.1M	0.03%	–	–
New York State Common Retirement Fund	184,454	$26.0M	0.03%	–	–
National Pension Service	182,861	$25.8M	0.05%	–	–
Parametric Portfolio Associates LLC	180,942	$25.5M	0.01%	–	–
Ensign Peak Advisors, Inc	167,801	$23.7M	0.05%	–	–
AXA S.A.	158,472	$22.4M	0.07%	–	–
Wells Fargo & Company	155,510	$22.0M	0.01%	–	–
Tekla Capital Management LLC	154,902	$21.9M	0.75%	–	–
State Board of Administration of Florida Retirement System	154,776	$21.9M	0.04%	–	–
Candriam Luxembourg S.C.A.	162,558	$20.3M	0.17%	–	–
Rhenman & Partners Asset Management AB	135,000	$19.1M	1.33%	–	–
Alexandria Capital, LLC	127,431	$18.0M	1.82%	–	–
CIBC Private Wealth Group, LLC	126,260	$17.8M	0.04%	–	–
Assenagon Asset Management S.A.	123,768	$17.5M	0.09%	–	–
Citadel Advisors LLC	123,226	$17.4M	0.02%	–	–
Balyasny Asset Management LLC	123,199	$17.4M	0.10%	–	–
Rhumbline Advisers	122,023	$17.2M	0.02%	–	–
State of Wisconsin Investment Board	121,857	$17.2M	0.04%	–	–
Canada Pension Plan Investment Board	118,357	$16.7M	0.02%	–	–
Sectoral Asset Management Inc	109,746	$15.5M	1.17%	–	–
International Biotechnology Trust PLC	108,800	$15.4M	4.06%	–	–
Eagle Health Investments LP	108,179	$15.3M	6.20%	–	–
Van Eck Associates Corp	100,254	$14.2M	0.04%	–	–
Alberta Investment Management Corp	88,800	$12.5M	0.11%	–	–
Citigroup Inc	85,477	$12.1M	0.01%	–	–
Putnam Investments LLC	82,300	$11.6M	0.02%	–	–
Eversept Partners, LP	80,937	$11.4M	0.94%	–	–
Great West Life Assurance Co	79,565	$11.2M	0.03%	–	–
D. E. Shaw & Co., Inc.	77,903	$11.0M	0.01%	–	–
Barclays PLC	77,865	$11.0M	0.01%	–	–
Parnassus Investments	77,587	$11.0M	0.03%	–	–
Millennium Management LLC	75,780	$10.7M	0.01%	–	–
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	75,661	$10.7M	0.04%	–	–
Morningstar Investment Services LLC	76,550	$10.3M	0.13%	–	–
Treasurer of the State of North Carolina	71,965	$10.2M	0.06%	–	–
State of New Jersey Common Pension Fund D	71,288	$10.1M	0.04%	–	–
DekaBank Deutsche Girozentrale	73,695	$9.91M	0.03%	–	–
Alliancebernstein L.P.	67,719	$9.56M	0.00%	–	–
Susquehanna International Group, LLP	66,674	$9.41M	0.01%	–	–
Parkman Healthcare Partners LLC	65,043	$9.18M	2.21%	–	–
Public Employees Retirement System of Ohio	62,249	$8.79M	0.03%	–	–
Sector Gamma AS	59,789	$8.44M	1.55%	–	–
Victory Capital Management Inc	58,044	$8.20M	0.01%	–	–
Russell Investments Group, Ltd.	57,210	$7.91M	0.01%	–	–