ALNY icon

Alnylam Pharmaceuticals
ALNY

Overview Fund Activity

618 hedge funds and large institutions have $34.2B invested in Alnylam Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 108 funds opening new positions, 236 increasing their positions, 197 reducing their positions, and 67 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
618
Holders Change
+33
Holders Change %
+5.64%
% of All Funds
8.4%
Holding in Top 10
10
Holding in Top 10 Change
+6
Holding in Top 10 Change %
+150%
% of All Funds
0.14%
New
108
Increased
236
Reduced
197
Closed
67
Calls
$274M
Puts
$238M
Net Calls
+$35.4M
Net Calls Change
+$6.38M

Top Buyers

1
Fidelity Investments
Fidelity Investments
Massachusetts
+$493M
2
Bank of America
Bank of America
North Carolina
+$174M
3
Invesco
Invesco
Georgia
+$95.9M
4
Vanguard Group
Vanguard Group
Pennsylvania
+$87.3M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
+$81.2M

Top Sellers

1
Wellington Management Group
Wellington Management Group
Massachusetts
-$428M
2
Capital International Investors
Capital International Investors
California
-$334M
3
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
-$103M
4
BlackRock
BlackRock
New York
-$88M
5
Corient Private Wealth
Corient Private Wealth
Florida
-$63.7M
Name Holding Trade Value Shares
Change 		Shares
Change %
TCOV
576
Trust Company of Vermont
Vermont
$3.78K – – –
SFA
577
Semmax Financial Advisors
North Carolina
$3.52K – – –
DPW
578
DiNuzzo Private Wealth
Pennsylvania
$2.7K +$810 +3 +43%
MSFP
579
Mark Sheptoff Financial Planning
Connecticut
$2.7K – – –
CW
580
Curio Wealth
Maryland
$2.35K +$2.35K +1 New
FWM
581
FSA Wealth Management
Massachusetts
$2.16K – – –
CIR
582
Clear Investment Research
Georgia
$2.16K +$270 +1 +14%
WAM
583
WFA Asset Management
Wisconsin
$2.09K – – –
HFS
584
Hughes Financial Services
Virginia
$2.05K +$2.05K +8 New
HWA
585
HHM Wealth Advisors
Tennessee
$1.89K – – –
SIC
586
SJS Investment Consulting
Ohio
$1.89K +$810 +3 +75%
JSAM
587
J. Safra Asset Management
New York
$1.89K – – –
GFPC
588
Global Financial Private Client
Florida
$1.89K +$1.35K +5 +250%
STB
589
S&T Bank
Pennsylvania
$1.62K +$1.62K +6 New
OC
590
Oakworth Capital
Alabama
$1.62K +$1.62K +6 New
CH
591
Cromwell Holdings
Wyoming
$1.62K +$1.62K +6 New
MA
592
Montag & Associates
Georgia
$1.57K – – –
GC
593
Garde Capital
Washington
$1.35K +$1.35K +5 New
RFS
594
Richardson Financial Services
Massachusetts
$1.35K -$540 -2 -29%
CIAS
595
CBIZ Investment Advisory Services
Ohio
$1.35K +$540 +2 +67%
HWP
596
Highline Wealth Partners
California
$1.08K +$270 +1 +33%
WW
597
Winnow Wealth
Texas
$843 +$211 +1 +33%
AWM
598
Abound Wealth Management
Tennessee
$811 -$270 -1 -25%
AF
599
Advisornet Financial
Minnesota
$810 – – –
RIL
600
Rothschild Investment LLC
Illinois
$810 +$540 +2 +200%
22 23
24
25 26