ALNYLAM PHARMACEUTICALS, INC. - COMMON STOCK (ALNY)

Q4 2025 13F Holders as of 31 Dec 2025

Type / Class
Equity / COMMON STOCK
Shares outstanding
131,516,365
Total 13F shares
129,254,569
Share change
-1,052,195
Total reported value
$51,413,982,947
Put/Call ratio
61%
Price per share
$397.65
Number of holders
825
Value change
-$559,942,742
Number of buys
400
Number of sells
402

Institutional Holders of ALNYLAM PHARMACEUTICALS, INC. - COMMON STOCK (ALNY) as of Q4 2025

As of 31 Dec 2025, ALNYLAM PHARMACEUTICALS, INC. - COMMON STOCK (ALNY) was held by 825 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 129,254,569 shares. The largest 10 holders included Capital World Investors, FMR LLC, VANGUARD GROUP INC, BlackRock, Inc., Capital Research Global Investors, JPMORGAN CHASE & CO, STATE STREET CORP, GEODE CAPITAL MANAGEMENT, LLC, BAILLIE GIFFORD & CO, and NORGES BANK. This page lists 827 institutional shareholders reporting positions in this security for the Q4 2025 filing period.
Investor Option Weight % Change % Value $ * Price Shares Share Change Activity Report Period
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.