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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 %
BCG
451
Breakwater Capital Group
New Jersey
$278K – – –
FIM
452
Freedom Investment Management
Connecticut
$278K -$38.1K -141 -12%
CFO
453
Callan Family Office
Pennsylvania
$275K -$6.48K -24 -2%
CGH
454
Crossmark Global Holdings
Texas
$275K +$275K +1,018 New
SFC
455
SYM Financial Corp
Indiana
$274K +$13.8K +51 +5%
GCM
456
Greenland Capital Management
New York
$270K -$270K -1,000 -50%
WP
457
Westmount Partners
California
$270K – – –
LS
458
Livforsakringsbolaget Skandia
Sweden
$270K – – –
EWA
459
EP Wealth Advisors
California
$269K +$269K +998 New
SBF
460
Sara-Bay Financial
Florida
$268K +$4.03K +15 +2%
MAS
461
Meeder Advisory Services
Ohio
$264K +$19.4K +72 +8%
PCM
462
Polymer Capital Management
New York
$259K +$259K +961 New
KAS
463
Kestra Advisory Services
Texas
$259K -$170K -629 -40%
DILIC
464
Dai-ichi Life Insurance Company
Japan
$258K – – –
HWA
465
HCR Wealth Advisors
California
$249K – – –
FMLI
466
Fukoku Mutual Life Insurance
Japan
$247K – – –
NL
467
NWAM LLC
Washington
$245K +$270 +1 +0.1%
SAM
468
Smartleaf Asset Management
Massachusetts
$240K +$39.7K +148 +20%
Envestnet Portfolio Solutions
469
Envestnet Portfolio Solutions
Illinois
$234K -$323K -1,195 -58%
BPA
470
Beacon Pointe Advisors
California
$234K -$18.4K -68 -7%
PA
471
Parallel Advisors
California
$233K +$8.37K +31 +4%
PAG
472
Poinciana Advisors Group
Florida
$230K -$2.7K -10 -1%
SCA
473
Snowden Capital Advisors
New York
$224K +$224K +829 New
P
474
&Partners
Tennessee
$223K +$223K +828 New
CD
475
Chapin Davis
Maryland
$223K – – –
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19
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