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Alnylam Pharmaceuticals

785 hedge funds and large institutions have $42.5B invested in Alnylam Pharmaceuticals in 2026 Q1 according to their latest regulatory filings, with 102 funds opening new positions, 320 increasing their positions, 257 reducing their positions, and 153 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 → $42.5B (-$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: 102 | Existing positions closed: 153

Holders
785
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
PPW
851
Parcion Private Wealth
Washington
Calamos Advisors
852
Calamos Advisors
Illinois
OC
853
Oppenheimer & Co
New York
ORG
854
Optimist Retirement Group
Washington
CG
855
Cynosure Group
Utah
PMAM
856
Picton Mahoney Asset Management
Ontario, Canada
PCM
857
Prelude Capital Management
New York
WWC
858
Waypoint Wealth Counsel
Georgia
BFIM
859
Beese Fulmer Investment Management
Ohio
JTWM
860
Jackson Thornton Wealth Management
Alabama
HAG
861
HighPoint Advisor Group
Illinois
BAM
862
Blueshift Asset Management
New Jersey
PWM
863
Perigon Wealth Management
California
WCP
864
Wick Capital Partners
Pennsylvania
KRW
865
Kaufman Rossin Wealth
Florida
BS
866
Banco Santander
Spain
SFC
867
SYM Financial Corp
Indiana
MF
868
Meridian Financial
Massachusetts
G
869
GenTrust
Florida
AWM
870
Ariadne Wealth Management
California
SRL
871
Scientech Research LLC
New Jersey
SAI
872
Savvy Advisors Inc
New York
WFI
873
West Family Investments
California
JRPIM
874
Journey Retirement Planning & Investment Management
Idaho
EA
875
Everpar Advisors
Oklahoma