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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
PCP
501
Perbak Capital Partners
United Kingdom
$399K
BFS
502
Bradley Foster & Sargent
Connecticut
$398K
CG
503
Caprock Group
Idaho
$394K
KAS
504
Kestra Advisory Services
Texas
$392K
Lido Advisors
505
Lido Advisors
California
$390K
MK
506
MASTERINVEST Kapitalanlage
$390K
BPA
507
Beacon Pointe Advisors
California
$383K
MC
508
Mathes Company
New York
$382K
SWP
509
Sagespring Wealth Partners
Tennessee
$379K
KF
510
Krilogy Financial
Missouri
$376K
NSAM
511
North Star Asset Management
Wisconsin
$365K
EPW
512
Evolve Private Wealth
California
$364K
BEI
513
Benjamin Edwards Inc
Missouri
$359K
ALAM
514
Asahi Life Asset Management
Japan
$358K
SP
515
SIH Partners
Delaware
$355K
EAM
516
Eventide Asset Management
Massachusetts
$351K
CPC
517
Cookson Peirce & Co
Pennsylvania
$351K
GS
518
GTS Securities
New York
$348K
PCG
519
Prosperity Consulting Group
Maryland
$344K
NPA
520
Nichols & Pratt Advisers
Massachusetts
$344K
DO
521
denkapparat Operations
Germany
$341K
CIM
522
Cambria Investment Management
California
$337K
WA
523
Wealth Alliance
New York
$336K
BCG
524
Breakwater Capital Group
New Jersey
$333K
WP
525
Westmount Partners
California
$331K