How many shares of ALNY does GILDER GAGNON HOWE & CO LLC own?

As of 2026-Q2, GILDER GAGNON HOWE & CO LLC holds 269,051 shares of ALNY (ALNYLAM PHARMACEUTICALS INC).

What is GILDER GAGNON HOWE & CO LLC's ALNY position worth?

As of 2026-Q2, GILDER GAGNON HOWE & CO LLC's ALNY position is worth $81M.

Is GILDER GAGNON HOWE & CO LLC buying or selling ALNY?

In 2026-Q2, GILDER GAGNON HOWE & CO LLC decreased their ALNY position (-3.9% change in shares).

When did GILDER GAGNON HOWE & CO LLC first buy ALNY?

Based on available 13F filings, GILDER GAGNON HOWE & CO LLC first reported a position in ALNY in 2019-Q1. They have held the position across 30 quarters.

Back to GG GILDER GAGNON HOWE & CO LLC

ALNY
30 quarters

Position history for GGGILDER GAGNON HOWE & CO LLC's holdings in ALNYLAM PHARMACEUTICALS INC

Current Value

$81M

Current Shares

269,051

Total Value Change

-$11.3M

Total Shares Change

-718,719

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	269,051	-3.9%	$81M	0.8%	$301.03	0
2026-Q1	Decreased	280,092	-12.3%	$92.7M	1.1%	$330.87	0
2025-Q4	Decreased	319,305	-3.0%	$127M	1.3%	$397.65	0
2025-Q3	Decreased	329,321	-2.3%	$150.2M	1.5%	$456.00	0
2025-Q2	Decreased	337,088	-2.5%	$109.9M	1.2%	$326.09	0
2025-Q1	Decreased	345,575	-5.4%	$93.3M	1.2%	$270.02	0
2024-Q4	Decreased	365,463	-4.8%	$86M	0.9%	$235.31	0
2024-Q3	Decreased	383,993	-3.7%	$105.6M	1.3%	$275.03	0
2024-Q2	Decreased	398,616	-1.6%	$96.9M	1.2%	$243.00	0
2024-Q1	Decreased	405,173	-31.0%	$60.6M	0.8%	$149.45	0
2023-Q4	Decreased	587,045	-1.3%	$112.4M	1.5%	$191.41	0
2023-Q3	Decreased	594,979	-0.6%	$105.4M	1.6%	$177.10	0
2023-Q2	Decreased	598,696	-3.6%	$113.7M	1.6%	$189.94	0
2023-Q1	Decreased	621,208	-4.4%	$124.4M	2.1%	$200.32	0
2022-Q4	Decreased	649,617	-2.2%	$154.4M	2.9%	$237.65	0
2022-Q3	Decreased	663,983	-12.0%	$132.9M	2.3%	$200.16	0
2022-Q2	Decreased	754,575	-4.6%	$110.1M	2.0%	$145.85	0
2022-Q1	Decreased	791,224	-5.8%	$129.2M	1.2%	$163.29	0
2021-Q4	Decreased	839,568	-9.1%	$142.4M	0.8%	$169.58	0
2021-Q3	Decreased	923,684	-0.2%	$174.4M	0.9%	$188.81	0
2021-Q2	Decreased	925,726	-0.4%	$156.9M	0.8%	$169.52	0
2021-Q1	Increased	929,643	+5.2%	$131.3M	0.7%	$141.19	45
2020-Q4	Decreased	884,130	-0.7%	$114.9M	0.6%	$129.97	0
2020-Q3	Increased	890,416	+0.8%	$129.6M	0.8%	$145.60	43
2020-Q2	Decreased	883,768	-3.9%	$130.9M	1.0%	$148.11	0
2020-Q1	Decreased	919,177	-1.9%	$100.1M	1.2%	$108.85	0
2019-Q4	Decreased	936,479	-1.9%	$107.9M	1.1%	$115.17	0
2019-Q3	Decreased	954,105	-2.4%	$76.7M	0.9%	$80.42	0
2019-Q2	Decreased	977,819	-1.0%	$71M	0.7%	$72.56	0
2019-Q1	New	987,770	-	$92.3M	1.0%	$93.45	58

Other major holders of ALNY: BNP PARIBAS FINANCIAL MARKETS, FMR LLC, Capital World Investors

ALNY30 quarters

ALNY
30 quarters