Alnylam Pharmaceuticals, Inc. ALNY

Set alert

155.94 USD -0.72 (-0.46%)

At closeNov 6, 2026, 7:45 PM EST

155.42 -0.52 -0.33%

After hours · Nov 6, 7:45 PM ET

154.30 Day range 159.45

155.94 52-week range 473.29

Held by insiders 0.18%

Held by institutions 101.82%

Float held by institutions 102.00%

Institutions 1,179

Top institutional holders
Holder	% held	Shares	Value	Reported
FMR, LLC	11.22%	15,023,962	2.34B	Jun 29, 2026
Capital World Investors	8.32%	11,144,846	1.74B	Jun 29, 2026
Blackrock Inc.	8.14%	10,907,675	1.70B	Jun 29, 2026
Capital Research Global Investors	7.28%	9,750,699	1.52B	Jun 29, 2026
Vanguard Portfolio Management LLC	4.88%	6,538,390	1.02B	Jun 29, 2026
Vanguard Capital Management LLC	4.50%	6,029,478	940.24M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
Growth Fund of America	6.69%	8,960,487	1.40B	Sep 29, 2026
Amcap Fund	3.38%	4,526,680	705.89M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	3.16%	4,239,087	661.04M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Mid-Cap Index Fund	2.16%	2,893,030	451.14M	Jun 29, 2026
Invesco QQQ Trust, Series 1	2.09%	2,794,074	435.71M	Sep 29, 2026
VANGUARD SPECIALIZED FUNDS-Vanguard Health Care Fund	1.60%	2,136,580	333.18M	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