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Alnylam Pharmaceuticals

812 hedge funds and large institutions have $59B invested in Alnylam Pharmaceuticals in 2025 Q3 according to their latest regulatory filings, with 222 funds opening new positions, 277 increasing their positions, 222 reducing their positions, and 49 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:

25% more repeat investments, than reductions

Existing positions increased: 277 | Existing positions reduced: 222

2.48% less ownership

Funds ownership: 101.29%98.81% (-2.5%)

13% less call options, than puts

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

Holders
812
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
VF
251
Virtu Financial
New York
$5.32M
DFCM
252
Dark Forest Capital Management
Puerto Rico
$5.29M
Mercer Global Advisors
253
Mercer Global Advisors
Colorado
$5.24M
RBI
254
Raiffeisen Bank International
Austria
$5.19M
CFB
255
Cullen/Frost Bankers
Texas
$5.04M
TCM
256
Traynor Capital Management
Pennsylvania
$4.96M
SAM
257
Silvercrest Asset Management
New York
$4.93M
Mirae Asset Global ETFs Holdings
258
Mirae Asset Global ETFs Holdings
Hong Kong
$4.86M
Schroder Investment Management Group
259
Schroder Investment Management Group
United Kingdom
$4.84M
Balyasny Asset Management
260
Balyasny Asset Management
Illinois
$4.68M
William Blair & Company
261
William Blair & Company
Illinois
$4.67M
HT
262
Headlands Technologies
Illinois
$4.65M
AB
263
Amalgamated Bank
New York
$4.63M
HCS
264
Himension Capital (Singapore)
Singapore
$4.6M
DP
265
Diadema Partners
New Jersey
$4.56M
Bank of Montreal
266
Bank of Montreal
Ontario, Canada
$4.53M
ERSOT
267
Employees Retirement System of Texas
Texas
$4.46M
Mackenzie Financial
268
Mackenzie Financial
Ontario, Canada
$4.46M
Lazard Asset Management
269
Lazard Asset Management
New York
$4.45M
EAMA
270
EFG Asset Management (Americas)
Florida
$4.44M
SSA
271
Schonfeld Strategic Advisors
New York
$4.43M
JSSH
272
J. Safra Sarasin Holding
$4.34M
Hudson Bay Capital Management
273
Hudson Bay Capital Management
Connecticut
$4.29M
Commonwealth Equity Services
274
Commonwealth Equity Services
Massachusetts
$4.29M
OSAM
275
O'Shaughnessy Asset Management
Connecticut
$4.24M