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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
NB
351
Norinchukin Bank
Japan
$1.64M
SCB
352
Saudi Central Bank
Saudi Arabia
$1.61M
A
353
AustralianSuper
Australia
$1.59M
Focus Partners Wealth
354
Focus Partners Wealth
Massachusetts
$1.59M
AIP
355
Ameritas Investment Partners
Nebraska
$1.58M
Envestnet Portfolio Solutions
356
Envestnet Portfolio Solutions
Illinois
$1.57M
BCI
357
Brinker Capital Investments
Pennsylvania
$1.56M
SGA
358
Strategic Global Advisors
California
$1.55M
BHCM
359
Brevan Howard Capital Management
Jersey
$1.53M
AAM
360
Azzad Asset Management
Virginia
$1.52M
EOJOAM
361
E. Ohman J:or Asset Management
Sweden
$1.52M
SFA
362
Sequoia Financial Advisors
Ohio
$1.51M
OAC
363
OMERS Administration Corp
Ontario, Canada
$1.49M
Pacer Advisors
364
Pacer Advisors
Pennsylvania
$1.48M
FC
365
FORA Capital
Florida
$1.48M
LCM
366
Laurion Capital Management
New York
$1.47M
HCM
367
Howland Capital Management
Massachusetts
$1.4M
UCFA
368
United Capital Financial Advisors
Texas
$1.35M
MGP
369
Metis Global Partners
California
$1.34M
NDSIB
370
North Dakota State Investment Board
North Dakota
$1.34M
FA
371
Faithward Advisors
Pennsylvania
$1.31M
GC
372
Gilbert & Cook
Iowa
$1.31M
AAM
373
Advisors Asset Management
Colorado
$1.31M
CT
374
Clearstead Trust
Maine
$1.3M
EI
375
Ethic Inc
New York
$1.28M