We are live on ! Find out more
ALNY icon

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
ASN
326
Advisory Services Network
Georgia
$2.09M
PIM
327
Plato Investment Management
Australia
$2.07M
ALMGDA
328
AG2R La Mondiale Gestion d'Actifs
France
$2.05M
EFM
329
E Fund Management
China
$2.01M
Fisher Asset Management
330
Fisher Asset Management
Washington
$2M
BCV
331
Banque Cantonale Vaudoise
Switzerland
$1.98M
DILIC
332
Dai-ichi Life Insurance Company
Japan
$1.96M
Jane Street
333
Jane Street
New York
$1.95M
SA
334
Sanctuary Advisors
Indiana
$1.93M
EP
335
Edgestream Partners
New Jersey
$1.92M
AAIS
336
ABN AMRO Investment Solutions
$1.91M
Walleye Trading
337
Walleye Trading
New York
$1.9M
BAMF
338
BI Asset Management Fondsmaeglerselskab
Denmark
$1.89M
Principal Financial Group
339
Principal Financial Group
Iowa
$1.87M
Group One Trading
340
Group One Trading
Illinois
$1.83M
Vontobel Holding
341
Vontobel Holding
Switzerland
$1.81M
AS
342
Aware Super
Australia
$1.81M
EF
343
Empowered Funds
Pennsylvania
$1.79M
IWC
344
Integrated Wealth Concepts
Massachusetts
$1.78M
VI
345
Vestcor Inc
New Brunswick, Canada
$1.76M
TMAM
346
Tokio Marine Asset Management
Japan
$1.75M
FCM
347
Fieldview Capital Management
Michigan
$1.75M
SCM
348
Sterling Capital Management
North Carolina
$1.71M
II
349
Ishara Investments
California
$1.7M
SPS
350
Susquehanna Portfolio Strategies
Pennsylvania
$1.66M