Alnylam Pharmaceuticals, Inc. ALNY

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151.64 USD -4.97 (-3.17%)

At closeNov 10, 2026, 4:00 PM EST

151.64 0.00 0.00%

After hours · Nov 10, 4:00 PM ET

149.18 Day range 158.82

149.18 52-week range 479.79

Held by insiders 0.18%

Held by institutions 103.83%

Float held by institutions 104.02%

Institutions 1,178

Top institutional holders
Holder	% held	Shares	Value	Reported
FMR, LLC	11.22%	15,023,962	2.28B	Jun 29, 2026
Capital World Investors	8.32%	11,144,846	1.69B	Jun 29, 2026
Blackrock Inc.	8.14%	10,907,675	1.65B	Jun 29, 2026
Capital Research Global Investors	7.28%	9,750,699	1.48B	Jun 29, 2026
Vanguard Portfolio Management LLC	4.88%	6,538,390	991.48M	Jun 29, 2026
Vanguard Capital Management LLC	4.50%	6,029,478	914.31M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
Growth Fund of America	6.69%	8,960,487	1.36B	Sep 29, 2026
Amcap Fund	3.38%	4,526,680	686.43M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	3.16%	4,239,087	642.82M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Mid-Cap Index Fund	2.16%	2,893,030	438.70M	Jun 29, 2026
Invesco QQQ Trust, Series 1	2.09%	2,794,074	423.69M	Sep 29, 2026
VANGUARD SPECIALIZED FUNDS-Vanguard Health Care Fund	1.60%	2,136,580	323.99M	Jul 30, 2026

ALNY insiders
Insider	Relation	Latest transaction	Date	Shares held
BONNEY MICHAEL W	Director	Sale	Aug 17, 2025	20,804
FITZGERALD KEVIN JOSEPH	Officer	Sale	Mar 4, 2026	21,106
GARG PUSHKAL	Officer	Sale	Mar 4, 2026	19,374
GREENSTREET YVONNE L	Chief Executive Officer	Stock Award(Grant)	Sep 17, 2026	96,209
POULTON JEFFREY V	Chief Financial Officer	Sale	Mar 3, 2026	61,862
PYOTT DAVID E I	Director	Sale	May 31, 2026	29,482

Held by funds