Clearbridge Investments, LLC

Position in ALNY — Alnylam Pharmaceuticals, Inc.

CIK 1348883 NEW YORK, NY

Position in ALNY

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$379,142,167

-$69,529,464 QoQ

Shares Held

1,259,483

-7.1% QoQ

Ownership

0.941%

of shares outstanding

% of Portfolio

0.32%

of 13F equity value

Holder Rank

#19

of 780 holders

Holding Since

Mar 2020

11 quarters on record

Voting authority Sole 96% Shared 0% None 4%

Healthcare · as of Jun 30, 2026

Clearbridge Investments, LLC holds $2,924,434,154 across 28 Biotechnology names. ALNY ranks #2 (13.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	2,342,915	$1,163,796,167
2	ALNY	Alnylam Pharmaceuticals, Inc. This page	1,259,483	$379,142,167
3	ARGX	Argenx SE	253,776	$235,445,759
4	TGTX	Tg Therapeutics, Inc.	2,650,192	$145,601,548
5	PTGX	Protagonist Therapeutics, Inc	725,335	$88,911,564
6	RYTM	Rhythm Pharmaceuticals, Inc.	696,473	$77,329,397
7	INSM	INSMED Inc	715,922	$76,331,603
8	MIRM	Mirum Pharmaceuticals, Inc.	639,734	$74,893,659

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$379,142,167	1,259,483	-7.1%	Shares	Sole	2026-08-13
2026-03-31	$448,671,631	1,356,036	+127.1%	Shares	Sole	2026-05-13
2025-12-31	$237,402,219	597,013	-4.1%	Shares	Sole	2026-02-11
2025-09-30	$283,830,360	622,435	+11.7%	Shares	Sole	2025-11-13
2025-06-30	$181,664,412	557,099	+7063.4%	Shares	Sole	2025-08-12
2025-03-31	$2,099,945	7,777	-90.7%	Shares	Sole	2025-05-13
2023-06-30	$15,800,158	83,185	+9.1%	Shares	Sole	2023-08-11
2023-03-31	$15,279,207	76,274	+34.6%	Shares	Sole	2023-05-12
2022-12-31	$13,465,249	56,660	+15423.3%	Shares	Sole	2023-02-10
2020-06-30	$54,060	365	0.0%	Shares	Defined	2020-08-14
2020-03-31	$39,730	365	—	Shares	Defined	2020-05-22
No filing history on record for this holder in this stock.