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Alnylam Pharmaceuticals

781 hedge funds and large institutions have $42.4B invested in Alnylam Pharmaceuticals in 2026 Q1 according to their latest regulatory filings, with 103 funds opening new positions, 319 increasing their positions, 254 reducing their positions, and 154 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less funds holding

Funds holding:

18% less capital invested

Capital invested by funds: $51.7B → $42.4B (-$9.26B)

25% less funds holding in top 10

Funds holding in top 10: 43 (-1)

33% less first-time investments, than exits

New positions opened: 103 | Existing positions closed: 154

Holders
781
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$450M
Puts
$205M
Net Calls
Net Calls Change

Top Buyers

1 +$1.17B
2 +$916M
3 +$546M
4
Two Sigma Investments
Two Sigma Investments
New York
+$468M
5
ClearBridge Investments
ClearBridge Investments
New York
+$258M

Top Sellers

1 -$1.87B
2 -$450M
3 -$448M
4
Invesco
Invesco
Georgia
-$297M
5
1832 Asset Management
1832 Asset Management
Ontario, Canada
-$175M
Name Holding Trade Value Shares
Change
Change in
Stake
LA
251
LBP AM
France
$4.7M
RIM
252
Rakuten Investment Management
Japan
$4.56M
DFCM
253
Dark Forest Capital Management
Puerto Rico
$4.54M
M
254
Mirova
France
$4.53M
HCS
255
Himension Capital (Singapore)
Singapore
$4.36M
Nordea Investment Management
256
Nordea Investment Management
Sweden
$4.35M
ELI
257
Empire Life Investments
Ontario, Canada
$4.34M
CM
258
Capula Management
Cayman Islands
$4.34M
Bank Julius Baer & Co
259
Bank Julius Baer & Co
Switzerland
$4.26M
FAM
260
Fred Alger Management
New York
$4.17M
CAPTRUST Financial Advisors
261
CAPTRUST Financial Advisors
North Carolina
$4.14M
IMPI
262
Ilmarinen Mutual Pension Insurance
Finland
$4.14M
Public Employees Retirement Association of Colorado
263
Public Employees Retirement Association of Colorado
Colorado
$4.12M
PNC Financial Services Group
264
PNC Financial Services Group
Pennsylvania
$4.08M
PFM
265
Privium Fund Management
Netherlands
$4.04M
VPIM
266
Vanguard Personalized Indexing Management
California
$4.04M
TCM
267
Traynor Capital Management
Pennsylvania
$3.98M
Credit Agricole
268
Credit Agricole
France
$3.89M
FDCDDQ
269
Federation des caisses Desjardins du Quebec
Quebec, Canada
$3.88M
Wealthfront Advisers
270
Wealthfront Advisers
California
$3.83M
Carson Wealth (CWM LLC)
271
Carson Wealth (CWM LLC)
Nebraska
$3.83M
YIH
272
Y-Intercept (HK)
Hong Kong
$3.76M
AV
273
ASR Vermogensbeheer
Netherlands
$3.71M
CFB
274
Cullen/Frost Bankers
Texas
$3.64M
Commonwealth Equity Services
275
Commonwealth Equity Services
Massachusetts
$3.5M