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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
PSC
826
Portman Square Capital
United Kingdom
SGH
827
Sivik Global Healthcare
Connecticut
HSA
828
Hussman Strategic Advisors
Maryland
VSQM
829
V-Square Quantitative Management
Illinois
WSFS
830
Wilmington Savings Fund Society
Delaware
EMCIP
831
Ewing Morris & Co Investment Partners
Ontario, Canada
BS
832
Banco Santander
Spain
QIM
833
Quantitative Investment Management
Virginia
Group One Trading
834
Group One Trading
Illinois
JAM
835
Jupiter Asset Management
United Kingdom
FIM
836
Freedom Investment Management
Connecticut
NRD
837
Nebula Research & Development
New York
IC
838
Iconiq Capital
California
SFC
839
Strategic Financial Concepts
Texas
GS
840
GTS Securities
New York
FTUS
841
Flow Traders U.S.
New York
VT
842
Volterra Technologies
New York
BIG
843
Brooklyn Investment Group
New York
CCA
844
Catalyst Capital Advisors
New York
T
845
TOBAM
France
GWM
846
Geneos Wealth Management
Colorado
New York State Teachers Retirement System (NYSTRS)
847
New York State Teachers Retirement System (NYSTRS)
New York
MYIA
848
Mount Yale Investment Advisors
Colorado
SO
849
Sierra Ocean
California
WA
850
Whipplewood Advisors
Colorado