ALNY icon

Alnylam Pharmaceuticals
ALNY

Overview Fund Activity

646 hedge funds and large institutions have $43B invested in Alnylam Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 97 funds opening new positions, 257 increasing their positions, 214 reducing their positions, and 62 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
646
Holders Change
+29
Holders Change %
+4.7%
% of All Funds
8.66%
Holding in Top 10
9
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-10%
% of All Funds
0.12%
New
97
Increased
257
Reduced
214
Closed
62
Calls
$188M
Puts
$203M
Net Calls
-$15.5M
Net Calls Change
-$50.8M

Top Buyers

1
Citadel Advisors
Citadel Advisors
Florida
+$195M
2
Holocene Advisors
Holocene Advisors
New York
+$195M
3
ClearBridge Investments
ClearBridge Investments
New York
+$179M
4
Macquarie Group
Macquarie Group
Australia
+$172M
5
Fidelity Investments
Fidelity Investments
Massachusetts
+$162M

Top Sellers

1
AQR Capital Management
AQR Capital Management
Connecticut
-$208M
2
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
-$204M
3
Wellington Management Group
Wellington Management Group
Massachusetts
-$175M
4
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$117M
5
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
-$89.2M
Name Holding Trade Value Shares
Change 		Shares
Change %
Allspring Global Investments
51
Allspring Global Investments
North Carolina
$101M +$13.3M +41,292 +15%
Dimensional Fund Advisors
52
Dimensional Fund Advisors
Texas
$99.6M -$1.39M -4,256 -1%
Sumitomo Mitsui Trust Group
53
Sumitomo Mitsui Trust Group
Japan
$95.7M +$674K +2,066 +0.7%
Raymond James Financial
54
Raymond James Financial
Florida
$88.2M +$483K +1,480 +0.6%
Two Sigma Advisers
55
Two Sigma Advisers
New York
$86.8M -$3.16M -9,700 -4%
Royal London Asset Management
56
Royal London Asset Management
United Kingdom
$84.5M -$9.09M -27,872 -10%
First Trust Advisors
57
First Trust Advisors
Illinois
$82.1M +$23.3M +71,357 +40%
Citigroup
58
Citigroup
New York
$80.9M +$17.4M +53,504 +27%
Marshall Wace
59
Marshall Wace
United Kingdom
$77.8M -$9.9M -30,359 -11%
CS
60
Candriam SCA
Luxembourg
$77.6M -$3.86M -11,835 -5%
PCH
61
Polar Capital Holdings
United Kingdom
$77.4M -$13.9M -42,500 -15%
1832 Asset Management
62
1832 Asset Management
Ontario, Canada
$72.8M +$25.9M +79,300 +55%
CIBC Private Wealth Group
63
CIBC Private Wealth Group
Georgia
$71.2M +$4.18M +12,818 +6%
Aberdeen Group
64
Aberdeen Group
United Kingdom
$70.4M +$1.04M +3,239 +2%
California Public Employees Retirement System
65
California Public Employees Retirement System
California
$69M +$3.29M +10,100 +5%
VOYA Investment Management
66
VOYA Investment Management
Georgia
$68.8M +$39.1M +119,901 +132%
Susquehanna International Group
67
Susquehanna International Group
Pennsylvania
$67.9M +$44.9M +137,797 +196%
Allianz Asset Management
68
Allianz Asset Management
Germany
$67.2M -$4.08M -12,510 -6%
Point72 Asset Management
69
Point72 Asset Management
Connecticut
$65.7M -$32.4M -99,239 -33%
RhumbLine Advisers
70
RhumbLine Advisers
Massachusetts
$65.4M +$6.2M +19,022 +10%
California State Teachers Retirement System (CalSTRS)
71
California State Teachers Retirement System (CalSTRS)
California
$65M +$611K +1,873 +0.9%
Ameriprise
72
Ameriprise
Minnesota
$63.1M +$27.6M +84,513 +77%
KBC Group
73
KBC Group
Belgium
$63.1M +$56.8M +174,238 +902%
AQR Capital Management
74
AQR Capital Management
Connecticut
$61.3M -$208M -640,095 -77%
Westfield Capital Management
75
Westfield Capital Management
Massachusetts
$60.9M -$1.72M -5,267 -3%
1 2
3
4 5