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Alnylam Pharmaceuticals

846 hedge funds and large institutions have $51.7B invested in Alnylam Pharmaceuticals in 2025 Q4 according to their latest regulatory filings, with 169 funds opening new positions, 288 increasing their positions, 290 reducing their positions, and 118 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding

Funds holding:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

0.83% less ownership

Funds ownership: 99.03%98.2% (-0.83%)

13% less capital invested

Capital invested by funds: $59.2B → $51.7B (-$7.48B)

69% less funds holding in top 10

Funds holding in top 10: 134 (-9)

Holders
846
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
4
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$760M
Puts
$494M
Net Calls
Net Calls Change

Top Buyers

1 +$303M
2 +$220M
3 +$149M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$108M
5
Morgan Stanley
Morgan Stanley
New York
+$108M

Top Sellers

1 -$635M
2 -$383M
3 -$360M
4
Jane Street
Jane Street
New York
-$287M
5
Macquarie Group
Macquarie Group
Australia
-$276M
Name Holding Trade Value Shares
Change
Change in
Stake
SBFM
501
S-Bank Fund Management
Finland
$509K
CGH
502
Crossmark Global Holdings
Texas
$509K
Winslow Capital Management
503
Winslow Capital Management
Minnesota
$503K
FRA
504
Frank Rimerman Advisors
California
$497K
PFPG
505
Pinnacle Financial Partners (Georgia)
Georgia
$492K
FFA
506
Farther Finance Advisors
California
$491K
CI
507
Cigna Investments
Connecticut
$490K
BIM
508
Bridges Investment Management
Nebraska
$484K
SAM
509
Smartleaf Asset Management
Massachusetts
$478K
NG
510
Norden Group
Utah
$473K
WPC
511
Wedmont Private Capital
Pennsylvania
$470K
CIA
512
Caerus Investment Advisors
Texas
$466K
MC
513
Mathes Company
New York
$459K
LAM
514
LECAP Asset Management
United Kingdom
$458K
HH
515
Hilltop Holdings
Texas
$453K
SWP
516
Sagespring Wealth Partners
Tennessee
$452K
FTUS
517
Flow Traders U.S.
New York
$451K
TAA
518
TB Alternative Assets
Cayman Islands
$451K
BPC
519
Banque Pictet & Cie
Switzerland
$445K
AHL
520
Abel Hall LLC
Louisiana
$442K
SAM
521
Simplify Asset Management
Nevada
$441K
NSAM
522
North Star Asset Management
Wisconsin
$439K
CGPCS
523
Capital Group Private Client Services
California
$425K
EWA
524
EverSource Wealth Advisors
Alabama
$422K
SL
525
Sentinus LLC
Illinois
$418K