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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 %
Mirae Asset Global Investments
276
Mirae Asset Global Investments
South Korea
$1.76M -$697K -2,596 -28%
NIM
277
NEOS Investment Management
Connecticut
$1.75M -$2.66M -9,848 -60%
TE
278
Tema ETFs
New York
$1.75M -$2.66M -9,848 -60%
QCM
279
Quantinno Capital Management
New York
$1.74M +$507K +1,876 +41%
Assenagon Asset Management
280
Assenagon Asset Management
Luxembourg
$1.73M -$3.65M -13,513 -68%
CAPTRUST Financial Advisors
281
CAPTRUST Financial Advisors
North Carolina
$1.72M -$8.91K -33 -0.5%
SC
282
SummitTX Capital
Texas
$1.71M +$1.71M +6,326 New
Pathstone Holdings
283
Pathstone Holdings
New Jersey
$1.7M +$31.1K +115 +2%
Squarepoint
284
Squarepoint
New York
$1.69M -$32.8M -121,429 -95%
JG
285
Jain Global
New York
$1.68M +$1.68M +6,221 New
BC
286
Burney Company
Virginia
$1.67M -$5.28M -19,536 -76%
Group One Trading
287
Group One Trading
Illinois
$1.67M +$1.67M +6,202 New
GCM
288
Genus Capital Management
British Columbia, Canada
$1.66M +$1.66M +6,130 New
TI
289
Tidal Investments
Wisconsin
$1.65M -$1.91M -7,061 -54%
MFAM
290
Motley Fool Asset Management
Virginia
$1.63M +$1.12M +4,130 +217%
MSRPS
291
Maryland State Retirement & Pension System
Maryland
$1.63M -$262K -969 -14%
EF
292
Empowered Funds
Pennsylvania
$1.59M -$467K -1,729 -23%
IIM
293
INTECH Investment Management
Florida
$1.59M -$452K -1,675 -22%
CWM
294
CIBC World Markets
New York
$1.58M +$15.7K +58 +1%
AAM
295
Advisors Asset Management
Colorado
$1.58M +$55.1K +204 +4%
ProShare Advisors
296
ProShare Advisors
Maryland
$1.58M -$72.9K -270 -4%
EOJOAM
297
E. Ohman J:or Asset Management
Sweden
$1.57M -$81K -300 -5%
PFM
298
Privium Fund Management
Netherlands
$1.54M +$1.54M +5,716 New
SAM
299
Shell Asset Management
Netherlands
$1.53M -$91K -337 -6%
MGP
300
Metis Global Partners
California
$1.5M +$227K +839 +18%
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