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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 %
MCM
601
Manchester Capital Management
Vermont
$541 – – –
WCM
602
WealthTrak Capital Management
Virginia
$541 +$271 +1 +100%
LCM
603
Logan Capital Management
Pennsylvania
$540 – – –
PWM
604
Parkworth Wealth Management
California
$540 +$270 +1 +100%
DWM
605
Dogwood Wealth Management
Kansas
$540 +$540 +2 New
TSMHT
606
Thurston Springer Miller Herd & Titak
Indiana
$540 +$540 +2 New
UB
607
UMB Bank
Missouri
$540 +$540 +2 New
BHWM
608
Bay Harbor Wealth Management
Maryland
$540 +$540 +2 New
CA
609
CoreCap Advisors
Michigan
$540 +$540 +2 New
HHGA
610
Halbert Hargrove Global Advisors
California
$271 +$271 +1 New
HIA
611
HFM Investment Advisors
New Jersey
$271 +$271 +1 New
NA
612
NewEdge Advisors
Louisiana
$270 -$262K -972 -100%
RJA
613
Ross\Johnson & Associates
Minnesota
$270 +$270 +1 New
CFD
614
Creative Financial Designs
Indiana
$270 +$270 +1 New
TPCW
615
TD Private Client Wealth
New York
$270 +$270 +1 New
BMC
616
Bear Mountain Capital
Washington
$257 +$257 +1 New
Norges Bank
617
Norges Bank
Norway
– -$578M -2,456,082 Closed
Capital International Investors
618
Capital International Investors
California
– -$334M -1,418,602 Closed
SCM
619
Soleus Capital Management
Connecticut
– -$18.1M -76,800 Closed
SFI
620
Susquehanna Fundamental Investments
Pennsylvania
– -$13.3M -56,585 Closed
BBL
621
Beck Bode LLC
Massachusetts
– -$13.2M -56,017 Closed
EAM
622
Empirical Asset Management
Massachusetts
– -$240K -51,614 Closed
TI
623
Trexquant Investment
Connecticut
– -$10.4M -44,024 Closed
ZIG
624
Zurich Insurance Group
Switzerland
– -$6.58M -27,977 Closed
Parallax Volatility Advisers
625
Parallax Volatility Advisers
California
– -$5.45M -23,161 Closed
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