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Alnylam Pharmaceuticals

Name Holding Trade Value Shares
Change
Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$604M +$5.84M +117,145 +1%
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$271M +$96.1M +1,928,635 +84%
Vanguard Group
3
Vanguard Group
Pennsylvania
$182M +$5.14M +103,095 +4%
BFA
4
BlackRock Fund Advisors
California
$144M +$16.8M +337,517 +18%
Wellington Management Group
5
Wellington Management Group
Massachusetts
$132M +$103M +2,062,847 New
Franklin Resources
6
Franklin Resources
California
$131M +$87.7M +1,759,640 +620%
GGHC
7
Gilder Gagnon Howe & Co
New York
$123M +$12.2M +244,650 +15%
State Street
8
State Street
Massachusetts
$97.8M -$3.01M -60,471 -4%
BIT
9
BlackRock Institutional Trust
California
$95.3M +$743K +14,911 +1%
CWAM
10
Columbia Wanger Asset Management
Illinois
$84.2M +$10.8M +216,856 +20%
SPC
11
Slate Path Capital
New York
$80.7M +$10.5M +210,000 +20%
UBS AM
12
UBS AM
Illinois
$78.5M -$5.99M -120,120 -9%
Capital World Investors
13
Capital World Investors
California
$77.6M -$24.3M -487,000 -29%
Jennison Associates
14
Jennison Associates
New York
$72.5M +$7.28M +146,005 +15%
BA
15
BlackRock Advisors
Delaware
$70.2M -$3.66M -73,347 -6%
Wells Fargo
16
Wells Fargo
California
$61.9M -$5.35M -107,360 -10%
CCI
17
Columbus Circle Investors
$61.3M +$17.1M +342,395 +56%
Northern Trust
18
Northern Trust
Illinois
$51.6M +$799K +16,023 +2%
Baillie Gifford & Co
19
Baillie Gifford & Co
United Kingdom
$48.2M -$7.37M -147,900 -16%
TCM
20
TimesSquare Capital Management
New York
$39.9M +$31M +622,800 New
Lord, Abbett & Co
21
Lord, Abbett & Co
New Jersey
$37.4M -$22.1M -442,397 -43%
Ameriprise
22
Ameriprise
Minnesota
$36.2M -$4.81M -96,578 -15%
Bank of New York Mellon
23
Bank of New York Mellon
New York
$33M -$2.61M -52,266 -9%
BB
24
BB Biotech
Switzerland
$30.2M +$822K +16,488 +4%
BM
25
Bridger Management
New York
$28.4M -$29.1M -583,467 -57%