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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 %
Jones Financial Companies
501
Jones Financial Companies
Missouri
$185K +$49.4K +153 +37%
FFO
502
Fortitude Family Office
Arizona
$169K +$5.54K +17 +3%
Northwestern Mutual Wealth Management
503
Northwestern Mutual Wealth Management
Wisconsin
$162K -$9.46K -29 -6%
VT
504
Volterra Technologies
New York
$160K +$160K +490 New
MCM
505
MAI Capital Management
Ohio
$159K +$13.4K +41 +9%
BIG
506
Brooklyn Investment Group
New York
$157K +$25.4K +78 +19%
CCA
507
Catalyst Capital Advisors
New York
$148K +$148K +453 New
EWA
508
EverSource Wealth Advisors
Alabama
$143K -$5.87K -18 -4%
OAM
509
Ostrum Asset Management
France
$128K -$3.91K -12 -3%
VCM
510
Versant Capital Management
Arizona
$126K +$16.6K +51 +15%
IWA
511
Icon Wealth Advisors
Texas
$126K +$126K +386 New
HFS
512
Hantz Financial Services
Michigan
$124K +$124K +379 New
FFA
513
Farther Finance Advisors
California
$123K +$45K +138 +57%
T
514
TOBAM
France
$115K -$982K -3,013 -90%
Walleye Trading
515
Walleye Trading
New York
$112K -$984K -3,017 -90%
C
516
Covestor
United Kingdom
$111K -$24.1K -74 -18%
HI
517
Horizon Investments
North Carolina
$111K +$111K +340 New
OIAM
518
OFI Invest Asset Management
France
$106K +$21.9K +79 +26%
IA
519
IFP Advisors
Florida
$81.5K -$13K -32 -14%
EPIM
520
Evelyn Partners Investment Management
$81.4K +$8.42K +30 +12%
GWM
521
Geneos Wealth Management
Colorado
$77.6K -$72.1K -221 -48%
LFG
522
Larson Financial Group
Missouri
$72.4K +$7.5K +23 +12%
SWM
523
Spire Wealth Management
Virginia
$66.8K +$326 +1 +0.5%
CWP
524
Concord Wealth Partners
Virginia
$65.2K – – –
AIM
525
Anchor Investment Management
South Carolina
$65.2K – – –
19 20
21
22 23