QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q3 2025
Shares 1,563 Value ($000) $0 Avg Close $5.32 Range $4.15 - $7.09
Q2 2025
Shares 3,152 Value ($000) $0 Avg Close $5.57 Range $4.05 - $7.03
Q4 2023
Shares 681 Value ($000) $0 Avg Close $23.54 Range $19.35 - $28.78
Q3 2023
Shares 5,863 Value ($000) $0 Avg Close $24.75 Range $20.57 - $28.77
Q4 2022
Shares 137,836 Value ($000) $2 Avg Close $11.51 Range $8.19 - $14.55
Q3 2022
Shares 103,913 Value ($000) $1,145 Avg Close $12.71 Range $6.31 - $19.46
Q2 2022
Shares 1,495 Value ($000) $24 Avg Close $20.56 Range $14.58 - $31.33
Q3 2021
Shares 8,253 Value ($000) $490 Avg Close $51.55 Range $44.20 - $60.95
Q2 2021
Shares 9,753 Value ($000) $572 Avg Close $58.04 Range $41.76 - $69.22
Q1 2021
Shares 708 Value ($000) $41 Avg Close $67.60 Range $42.92 - $92.57
Q4 2020
Shares 200 Value ($000) $9 Avg Close $43.65 Range $33.55 - $52.75