QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

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

Q4 2025
Shares 362,740 Value ($000) $2,307 Avg Close $6.21 Range $4.50 - $7.88
Q3 2025
Shares 331,246 Value ($000) $1,799 Avg Close $5.32 Range $4.15 - $7.09
Q2 2025
Shares 298,989 Value ($000) $1,988 Avg Close $5.57 Range $4.05 - $7.03
Q1 2025
Shares 292,805 Value ($000) $1,906 Avg Close $8.34 Range $6.16 - $12.41
Q4 2024
Shares 266,615 Value ($000) $2,834 Avg Close $12.16 Range $9.87 - $15.67
Q3 2024
Shares 325,604 Value ($000) $4,220 Avg Close $13.36 Range $10.50 - $16.74
Q2 2024
Shares 328,519 Value ($000) $4,340 Avg Close $16.71 Range $11.83 - $23.86
Q1 2024
Shares 315,383 Value ($000) $7,430 Avg Close $24.77 Range $21.53 - $29.70
Q4 2023
Shares 295,811 Value ($000) $8,087 Avg Close $23.54 Range $19.35 - $28.78
Q3 2023
Shares 267,027 Value ($000) $7,247 Avg Close $24.75 Range $20.57 - $28.77
Q2 2023
Shares 261,046 Value ($000) $5,887 Avg Close $17.82 Range $10.64 - $24.14
Q1 2023
Shares 253,886 Value ($000) $2,861 Avg Close $12.78 Range $10.02 - $15.63
Q4 2022
Shares 252,785 Value ($000) $3,501 Avg Close $11.51 Range $8.19 - $14.55
Q3 2022
Shares 249,300 Value ($000) $2,748 Avg Close $12.71 Range $6.31 - $19.46
Q2 2022
Shares 240,590 Value ($000) $3,896 Avg Close $20.56 Range $14.58 - $31.33
Q1 2022
Shares 257,718 Value ($000) $7,523 Avg Close $30.56 Range $22.70 - $43.32
Q4 2021
Shares 249,104 Value ($000) $10,563 Avg Close $46.70 Range $35.02 - $60.92
Q3 2021
Shares 249,692 Value ($000) $12,433 Avg Close $51.55 Range $44.20 - $60.95
Q2 2021
Shares 217,040 Value ($000) $12,732 Avg Close $58.04 Range $41.76 - $69.22
Q1 2021
Shares 199,479 Value ($000) $11,664 Avg Close $67.60 Range $42.92 - $92.57
Q4 2020
Shares 146,835 Value ($000) $6,828 Avg Close $43.65 Range $33.55 - $52.75
Q3 2020
Shares 143,511 Value ($000) $4,843 Avg Close $32.20 Range $26.01 - $37.77
Q2 2020
Shares 103,613 Value ($000) $2,838 Avg Close $25.27 Range $17.12 - $28.99
Q1 2020
Shares 86,888 Value ($000) $1,597 Avg Close $22.82 Range $10.89 - $29.00
Q4 2019
Shares 85,796 Value ($000) $2,028 Avg Close $22.82 Range $19.08 - $26.07
Q3 2019
Shares 81,832 Value ($000) $1,798 Avg Close $27.89 Range $21.17 - $35.69
Q2 2019
Shares 63,271 Value ($000) $2,138 Avg Close $25.87 Range $19.54 - $36.15
Q1 2019
Shares 51,589 Value ($000) $1,333 Avg Close $22.33 Range $17.08 - $26.06
Q4 2018
Shares 48,666 Value ($000) $892 Avg Close $17.94 Range $16.00 - $22.23
Q3 2018
Shares 52,415 Value ($000) $1,123 Avg Close $15.81 Range $13.00 - $22.61
Q2 2018
Shares 22,676 Value ($000) $326 Avg Close $17.31 Range $13.53 - $20.83
Q1 2018
Shares 21,902 Value ($000) $374 Avg Close $20.04 Range $16.03 - $24.80