QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

Spark Investment Management LLC's Holding History (CIK: 0001554871)

Note: Option positions (PUT/CALL) are excluded.

Q1 2019

Shares 20,100 Value ($000) $519 Avg Close $22.33 Range $17.08 - $26.06

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	20,100	$519	$22.33	$17.08 - $26.06