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 %
MPWT
526
MassMutual Private Wealth & Trust
Connecticut
$63.9K +$17K +52 +36%
HNB
527
Huntington National Bank
Ohio
$63.6K -$978 -3 -2%
Bessemer Group
528
Bessemer Group
New Jersey
$63K +$27.6K +84 +78%
New York State Teachers Retirement System (NYSTRS)
529
New York State Teachers Retirement System (NYSTRS)
New York
$62K -$483K -1,487 -89%
EDRH
530
Edmond de Rothschild Holding
Switzerland
$61.3K -$42.4K -130 -41%
FHA
531
First Horizon Advisors
Tennessee
$61K +$20.5K +63 +51%
SC
532
Steph & Co
Wisconsin
$60.3K +$60.3K +185 New
PWMG
533
Prestige Wealth Management Group
New Jersey
$60K -$43K -132 -42%
WTA
534
Washington Trust Advisors
Massachusetts
$59.3K +$2.28K +7 +4%
PFBT
535
Parkside Financial Bank & Trust
Missouri
$58.4K +$14.3K +44 +33%
IUHSA
536
Itau Unibanco Holding S.A.
Brazil
$54.8K -$652 -2 -1%
CAL
537
Capital Advisors Ltd
Ohio
$53K – – –
BBHC
538
Brown Brothers Harriman & Co
New York
$50.2K +$41.4K +127 +470%
GRP
539
Global Retirement Partners
California
$49.2K +$49.2K +151 New
AAP
540
Arax Advisory Partners
Colorado
$48.9K +$21.2K +65 +76%
BLC
541
Brown, Lisle/Cummings
Rhode Island
$43K – – –
A
542
AlphaQuest
New York
$43K +$43K +132 New
AAS
543
Ameritas Advisory Services
Nebraska
$41.7K +$41.7K +128 New
MYIA
544
Mount Yale Investment Advisors
Colorado
$36.8K +$36.8K +113 New
PD
545
Point72 (DIFC)
United Arab Emirates
$34.2K -$524K -1,607 -94%
HFM
546
Hartford Financial Management
Connecticut
$32.6K – – –
CIA
547
Cape Investment Advisory
Georgia
$32.6K +$3.26K +10 +11%
HI
548
Harbour Investments
Wisconsin
$31.3K +$1.63K +5 +5%
AUB
549
Atlantic Union Bankshares
Virginia
$30K +$30K +92 New
HWM
550
Hemington Wealth Management
Virginia
$28K +$6.76K +21 +32%
20 21
22
23 24