Alnylam Pharmaceuticals, Inc.

MASSACHUSETTS FINANCIAL SERVICES CO /MA/ ALNY

Report date

12/31/2025

Quarter

2025 Q4

Filed

1/22/2026

Shares

495,307

Value ($000)

196,959

Weight

0.1%

2020 Q2 - 2025 Q4 (17 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	1/22/2026	196,959	0.1%	495,307	12/31/2025
2025 Q3	10/29/2025	162,577	0.1%	356,529	9/30/2025
2023 Q4	2/8/2024	21,484	0.0%	112,240	12/31/2023
2023 Q3	11/8/2023	121,885	0.0%	688,228	9/30/2023
2023 Q2	8/9/2023	127,715	0.0%	672,397	6/30/2023
2023 Q1	5/10/2023	153,399	0.1%	765,772	3/31/2023
2022 Q4	2/13/2023	179,555	0.1%	755,542	12/31/2022
2022 Q3	11/9/2022	107,206	0.0%	535,599	9/30/2022
2022 Q2	8/9/2022	50,215	0.0%	344,289	6/30/2022
2022 Q1	5/11/2022	49,434	0.0%	302,743	3/31/2022
2021 Q4	2/10/2022	224,221	0.1%	1,322,211	12/31/2021
2021 Q3	11/10/2021	257,780	0.1%	1,365,287	9/30/2021
2021 Q2	8/13/2021	233,115	0.1%	1,375,143	6/30/2021
2021 Q1	5/13/2021	206,429	0.1%	1,462,062	3/31/2021
2020 Q4	5/12/2021	229,185	0.1%	1,763,367	12/31/2020
2020 Q3	11/12/2020	277,424	0.1%	1,905,390	9/30/2020
2020 Q2	11/20/2020	157,467	0.1%	1,063,179	6/30/2020