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Alnylam Pharmaceuticals

Name Holding Trade Value Shares
Change
Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$1.09B +$52.1M +815,270 +6%
Wellington Management Group
2
Wellington Management Group
Massachusetts
$947M -$11M -172,131 -1%
Dodge & Cox
3
Dodge & Cox
California
$733M -$13.6M -213,425 -2%
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$532M +$160M +2,500,634 +60%
Vanguard Group
5
Vanguard Group
Pennsylvania
$512M +$48.5M +759,295 +13%
BlackRock
6
BlackRock
New York
$414M +$28.2M +441,957 +9%
Baillie Gifford & Co
7
Baillie Gifford & Co
United Kingdom
$274M +$6.19M +96,805 +3%
State Street
8
State Street
Massachusetts
$155M -$14.6M -229,081 -11%
PA
9
Perceptive Advisors
New York
$146M +$46.6M +729,286 +66%
Goldman Sachs
10
Goldman Sachs
New York
$121M +$8.16M +127,718 +9%
UBS AM
11
UBS AM
Illinois
$116M -$18.1M -282,566 -16%
BRC
12
Blue Ridge Capital
New York
$110M -$13.6M -213,300 -13%
BB
13
BB Biotech
Switzerland
$97.4M -$1.28M -20,000 -2%
GGHC
14
Gilder Gagnon Howe & Co
New York
$94.5M -$1.32M -20,669 -2%
SPC
15
Slate Path Capital
New York
$90.5M -$55.3M -865,000 -43%
RI
16
RTW Investments
New York
$83M -$3.32M -51,909 -5%
Morgan Stanley
17
Morgan Stanley
New York
$81.2M +$20.2M +315,795 +45%
BM
18
Bridger Management
New York
$60.5M +$2.05M +32,036 +4%
Norges Bank
19
Norges Bank
Norway
$59.4M +$6.39M +100,000 +16%
D.E. Shaw & Co
20
D.E. Shaw & Co
New York
$58.5M +$15.2M +238,256 +48%
1WCM
21
12 West Capital Management
New York
$55.8M
Janus Henderson Group
22
Janus Henderson Group
$53.2M +$42.6M +667,333 New
Geode Capital Management
23
Geode Capital Management
Massachusetts
$52.8M +$5.47M +85,608 +15%
O
24
OrbiMed
New York
$51M +$35.6M +557,000 +678%
First Trust Advisors
25
First Trust Advisors
Illinois
$50M -$4.34M -67,853 -10%