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Quanterix
QTRX

Name Holding Trade Value Shares
Change 		Change in
Stake
BlackRock
1
BlackRock
New York
$42.8M +$4.21M +204,590 +8%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$42.2M +$27.1M +1,319,824 +103%
Macquarie Group
3
Macquarie Group
Australia
$36.7M -$8.09M -393,707 -15%
RI
4
RTW Investments
New York
$29.5M +$11.7M +570,603 +46%
Vanguard Group
5
Vanguard Group
Pennsylvania
$28.6M +$284K +13,838 +0.8%
GGHC
6
Gilder Gagnon Howe & Co
New York
$26M -$13.3M -645,545 -29%
Millennium Management
7
Millennium Management
New York
$24.5M -$6.35M -309,020 -17%
CCM
8
Camber Capital Management
Massachusetts
$18.5M +$23.5M +1,141,700 New
Marshall Wace
9
Marshall Wace
United Kingdom
$17.4M -$8.49M -413,221 -28%
GIM
10
Granahan Investment Management
Massachusetts
$17.4M -$1.63M -79,127 -7%
T. Rowe Price Associates
11
T. Rowe Price Associates
Maryland
$17.2M -$4.15M -201,971 -16%
Bank of New York Mellon
12
Bank of New York Mellon
New York
$13.2M -$414K -20,124 -2%
ACM
13
Ashford Capital Management
Delaware
$13M +$8.74M +425,085 +113%
FCM
14
Frontier Capital Management
Massachusetts
$11.4M -$14.9M -723,630 -51%
State Street
15
State Street
Massachusetts
$10.6M +$363K +17,659 +3%
PIM
16
Platinum Investment Management
Australia
$10.4M +$906K +44,055 +7%
Baillie Gifford & Co
17
Baillie Gifford & Co
United Kingdom
$10.2M -$28.3K -1,378 -0.2%
Invesco
18
Invesco
Georgia
$10.1M -$9.69M -471,586 -43%
Geode Capital Management
19
Geode Capital Management
Massachusetts
$9.84M +$709K +34,484 +6%
ClearBridge Investments
20
ClearBridge Investments
New York
$7.87M +$30.3K +1,475 +0.3%
PVI
21
Pura Vida Investments
New York
$7.08M +$8.99M +437,500 New
TM
22
Tikvah Management
North Carolina
$7.06M – – –
PCM
23
Portolan Capital Management
Massachusetts
$6.18M +$7.85M +381,875 New
Northern Trust
24
Northern Trust
Illinois
$5.07M +$169K +8,203 +3%
FCM
25
Farallon Capital Management
California
$4.21M -$5.86M -285,000 -52%
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