Quanterix Corp (QTRX)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Ameriprise Financial Inc	3,205,928	$34,079,014	0%
2.	Blackrock, Inc.	3,164,221	$33,635,667	0%
3.	Alliancebernstein L.p.	2,439,805	$25,935,127	0%
4.	Vanguard Group Inc	2,217,225	$23,569,102	0%
5.	William Blair Investment Management, Llc	1,062,105	$11,290,176	0.02%