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Alnylam Pharmaceuticals

806 hedge funds and large institutions have $59B invested in Alnylam Pharmaceuticals in 2025 Q3 according to their latest regulatory filings, with 221 funds opening new positions, 274 increasing their positions, 221 reducing their positions, and 48 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

24% more repeat investments, than reductions

Existing positions increased: 274 | Existing positions reduced: 221

2.46% less ownership

Funds ownership: 101.24%98.78% (-2.5%)

13% less call options, than puts

Call options by funds: $562M | Put options by funds: $649M

Holders
806
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
13
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$562M
Puts
$649M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
DFCM
251
Dark Forest Capital Management
Puerto Rico
$5.29M
Mercer Global Advisors
252
Mercer Global Advisors
Colorado
$5.24M
RBI
253
Raiffeisen Bank International
Austria
$5.19M
CFB
254
Cullen/Frost Bankers
Texas
$5.04M
TCM
255
Traynor Capital Management
Pennsylvania
$4.96M
SAM
256
Silvercrest Asset Management
New York
$4.93M
Mirae Asset Global ETFs Holdings
257
Mirae Asset Global ETFs Holdings
Hong Kong
$4.86M
Schroder Investment Management Group
258
Schroder Investment Management Group
United Kingdom
$4.84M
Balyasny Asset Management
259
Balyasny Asset Management
Illinois
$4.68M
William Blair & Company
260
William Blair & Company
Illinois
$4.67M
HT
261
Headlands Technologies
Illinois
$4.65M
AB
262
Amalgamated Bank
New York
$4.63M
HCS
263
Himension Capital (Singapore)
Singapore
$4.6M
DP
264
Diadema Partners
New Jersey
$4.56M
Bank of Montreal
265
Bank of Montreal
Ontario, Canada
$4.53M
ERSOT
266
Employees Retirement System of Texas
Texas
$4.46M
Mackenzie Financial
267
Mackenzie Financial
Ontario, Canada
$4.46M
Lazard Asset Management
268
Lazard Asset Management
New York
$4.45M
EAMA
269
EFG Asset Management (Americas)
Florida
$4.44M
SSA
270
Schonfeld Strategic Advisors
New York
$4.43M
JSSH
271
J. Safra Sarasin Holding
$4.34M
Hudson Bay Capital Management
272
Hudson Bay Capital Management
Connecticut
$4.29M
Commonwealth Equity Services
273
Commonwealth Equity Services
Massachusetts
$4.29M
OSAM
274
O'Shaughnessy Asset Management
Connecticut
$4.24M
Prudential Financial
275
Prudential Financial
New Jersey
$4.16M