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Alnylam Pharmaceuticals
ALNY

Overview Fund Activity

617 hedge funds and large institutions have $34.2B invested in Alnylam Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 107 funds opening new positions, 236 increasing their positions, 197 reducing their positions, and 67 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
617
Holders Change
+32
Holders Change %
+5.47%
% of All Funds
8.38%
Holding in Top 10
10
Holding in Top 10 Change
+6
Holding in Top 10 Change %
+150%
% of All Funds
0.14%
New
107
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 %
PWAM
551
Private Wealth Asset Management
Iowa
$12.7K +$12.7K +47 New
SS
552
SBI Securities
Japan
$10.8K +$1.08K +4 +11%
WA
553
Whipplewood Advisors
Colorado
$10.3K +$6.94K +71 +209%
BIA
554
Bell Investment Advisors
California
$9.99K +$1.62K +6 +19%
CFO
555
CVA Family Office
Colorado
$9.99K +$3.24K +12 +48%
WT
556
Whittier Trust
California
$9.72K – – –
BWL
557
Bogart Wealth LLC
Virginia
$9.45K +$1.08K +4 +13%
JWA
558
JFS Wealth Advisors
Pennsylvania
$9.45K +$2.43K +9 +35%
OP
559
ORG Partners
Indiana
$9.2K +$9.2K +36 New
CPG
560
Cornerstone Planning Group
New Jersey
$8.23K +$2.66K +11 +48%
TWC
561
TD Waterhouse Canada
Ontario, Canada
$7.64K – – –
BBHC
562
Brown Brothers Harriman & Co
New York
$7.29K -$810 -3 -10%
MAM
563
Meeder Asset Management
Ohio
$7.02K -$3.24K -12 -32%
PGAM
564
Princeton Global Asset Management
New Jersey
$6.75K -$6.75K -25 -50%
SC
565
SouthState Corp
Florida
$5.67K +$5.67K +21 New
MG
566
Mather Group
Illinois
$5.42K +$2.17K +8 +67%
TH
567
TCTC Holdings
Texas
$5.13K +$5.13K +19 New
QC
568
Quent Capital
New York
$4.59K – – –
NWM
569
Nova Wealth Management
Florida
$4.59K +$4.59K +17 New
CTC
570
Cetera Trust Company
Minnesota
$4.32K – – –
SS
571
Sunbelt Securities
Texas
$4.05K – – –
SAM
572
Sherman Asset Management
California
$4.05K – – –
AW
573
Avion Wealth
Texas
$4K – – –
FRA
574
Front Row Advisors
California
$3.78K – – –
TCOV
575
Trust Company of Vermont
Vermont
$3.78K – – –
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23
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