Capital World Investors

CIK

1422849

City

LOS ANGELES

State / Country

Stock

ALNY — Alnylam Pharmaceuticals, Inc.

Top Portfolio Positions

598 positions · $717,040,322,628 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
AVGO	Broadcom Inc. Technology	116,188,483	$35,961,497,373	5.02%
META	Meta Platforms, Inc. Communication Services	41,055,422	$23,489,038,588	3.28%
MSFT	Microsoft Corp Technology	61,734,339	$22,852,200,267	3.19%
NVDA	Nvidia Corp Technology	130,266,430	$22,718,465,392	3.17%
PM	Philip Morris International Inc. Consumer Defensive	133,450,504	$22,064,706,331	3.08%
GOOGL	Alphabet Inc. Communication Services	65,347,108	$18,791,214,376	2.62%
TSLA	Tesla, Inc. Consumer Cyclical	42,904,073	$15,949,589,137	2.22%
LLY	ELI LILLY & Co Healthcare	15,621,813	$14,368,474,943	2.00%
MU	Micron Technology Inc Technology	42,054,392	$14,207,655,793	1.98%
VRTX	Vertex Pharmaceuticals Inc / Ma Healthcare	25,368,124	$11,327,882,090	1.58%

Portfolio Trend

25 quarters · across all stocks

Holdings in ALNY

Compact Export CSV

Shares Held

Position Value (USD)

25 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$3,574,172,882	10,802,348	-33.7%	Shares	Defined	2026-05-13
2025-12-31	$6,482,399,635	16,301,772	-0.8%	Shares	Defined	2026-02-11
2025-09-30	$7,494,019,368	16,434,253	-2.2%	Shares	Defined	2025-11-13
2025-06-30	$5,479,944,732	16,805,007	+0.3%	Shares	Defined	2025-08-13
2025-03-31	$4,522,733,202	16,749,623	+0.9%	Shares	Defined	2025-05-12
2024-12-31	$3,906,269,537	16,600,525	+0.6%	Shares	Defined	2025-02-13
2024-09-30	$4,540,311,852	16,508,424	+10.3%	Shares	Defined	2024-11-13
2024-06-30	$3,638,036,349	14,971,343	+17.1%	Shares	Defined	2024-08-13
2024-03-31	$1,911,351,320	12,789,236	-20.9%	Shares	Defined	2024-05-14
2023-12-31	$3,095,973,103	16,174,563	-2.1%	Shares	Defined	2024-02-13
2023-09-30	$2,927,340,446	16,529,308	+0.2%	Shares	Defined	2023-11-13
2023-06-30	$3,133,544,836	16,497,551	+0.1%	Shares	Defined	2023-08-11
2023-03-31	$3,300,512,584	16,476,201	+0.5%	Shares	Defined	2023-05-15
2022-12-31	$3,895,148,853	16,390,275	+17.5%	Shares	Defined	2023-02-14
2022-09-30	$2,792,161,343	13,949,647	+35.6%	Shares	Defined	2022-11-14
2022-06-30	$1,500,944,100	10,291,012	+71.5%	Shares	Defined	2022-08-15
2022-03-31	$979,686,767	5,999,674	+1781.1%	Shares	Defined	2022-05-19
2021-12-31	$54,086,862	318,946	0.0%	Shares	Defined	2022-02-14
2021-09-30	$60,220,194	318,946	0.0%	Shares	Defined	2021-11-15
2021-06-30	$54,067,725	318,946	-9.5%	Shares	Defined	2021-08-16
2021-03-31	$49,775,969	352,546	0.0%	Shares	Defined	2021-05-14
2020-12-31	$45,820,403	352,546	0.0%	Shares	Defined	2021-02-12
2020-09-30	$51,330,697	352,546	0.0%	Shares	Defined	2020-11-13
2020-06-30	$52,215,588	352,546	0.0%	Shares	Defined	2020-08-14
2020-03-31	$38,374,632	352,546	—	Shares	Defined	2020-05-15
No 13F history on record for this holder in this stock.