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Alnylam Pharmaceuticals

593 hedge funds and large institutions have $30.1B invested in Alnylam Pharmaceuticals in 2024 Q4 according to their latest regulatory filings, with 98 funds opening new positions, 239 increasing their positions, 180 reducing their positions, and 62 closing their positions.

New
Increased
Maintained
Reduced
Closed

58% more first-time investments, than exits

New positions opened: 98 | Existing positions closed: 62

33% more repeat investments, than reductions

Existing positions increased: 239 | Existing positions reduced: 180

17% more call options, than puts

Call options by funds: $195M | Put options by funds: $166M

5% more funds holding

Funds holding: 566593 (+27)

2.61% more ownership

Funds ownership: 96.47%99.08% (+2.6%)

12% less capital invested

Capital invested by funds: $34.1B → $30.1B (-$3.99B)

43% less funds holding in top 10

Funds holding in top 10: 74 (-3)

Holders
593
Holders Change
+27
Holders Change %
+4.77%
% of All Funds
7.81%
Holding in Top 10
4
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-42.86%
% of All Funds
0.05%
New
98
Increased
239
Reduced
180
Closed
62
Calls
$195M
Puts
$166M
Net Calls
+$29M
Net Calls Change
-$10.2M
Name Holding Trade Value Shares
Change
Change in
Stake
Capital World Investors
1
Capital World Investors
California
$3.91B +$24.2M +92,101 +0.6%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$3.17B -$312M -1,186,369 -8%
Vanguard Group
3
Vanguard Group
Pennsylvania
$3B +$25.9M +98,303 +0.8%
BlackRock
4
BlackRock
New York
$2.33B +$46.8M +177,839 +2%
Capital Research Global Investors
5
Capital Research Global Investors
California
$1.64B +$454M +1,724,610 +33%
RP
6
Regeneron Pharmaceuticals
New York
$1.05B +$1.17B +4,444,445 New
T. Rowe Price Investment Management
7
T. Rowe Price Investment Management
Maryland
$1.03B +$327M +1,245,195 +40%
Wellington Management Group
8
Wellington Management Group
Massachusetts
$988M -$199M -756,724 -15%
Baillie Gifford & Co
9
Baillie Gifford & Co
United Kingdom
$951M -$223M -846,741 -17%
Dodge & Cox
10
Dodge & Cox
California
$833M -$21.6M -82,273 -2%
State Street
11
State Street
Massachusetts
$805M -$11.9M -45,438 -1%
T. Rowe Price Associates
12
T. Rowe Price Associates
Maryland
$781M -$34.8M -132,448 -4%
Norges Bank
13
Norges Bank
Norway
$578M +$21.2M +80,547 +3%
JP Morgan Chase
14
JP Morgan Chase
New York
$529M +$22.9M +87,116 +4%
Geode Capital Management
15
Geode Capital Management
Massachusetts
$518M +$15.7M +59,597 +3%
American Century Companies
16
American Century Companies
Missouri
$377M +$2.97M +11,291 +0.7%
OAG
17
Orbis Allan Gray
Bermuda
$347M +$53.8M +204,690 +16%
Capital International Investors
18
Capital International Investors
California
$334M -$671M -2,552,261 -64%
Winslow Capital Management
19
Winslow Capital Management
Minnesota
$240M +$15.5M +58,960 +6%
Northern Trust
20
Northern Trust
Illinois
$207M +$37.9M +143,941 +20%
Legal & General Group
21
Legal & General Group
United Kingdom
$195M +$9.78M +37,188 +5%
AQR Capital Management
22
AQR Capital Management
Connecticut
$191M +$80.9M +307,702 +61%
BG
23
Bellevue Group
Switzerland
$181M -$10.2M -38,827 -5%
Morgan Stanley
24
Morgan Stanley
New York
$171M +$28.6M +108,661 +18%
UBS AM
25
UBS AM
Illinois
$167M +$1.15M +4,367 +0.6%