QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q4 2025

Shares 98,572 Value ($000) $627 Avg Close $6.21 Range $4.50 - $7.88

Q3 2025

Shares 83,181 Value ($000) $452 Avg Close $5.32 Range $4.15 - $7.09

Q1 2025

Shares 189,960 Value ($000) $1,237 Avg Close $8.34 Range $6.16 - $12.41

Q4 2024

Shares 179,800 Value ($000) $1,911 Avg Close $12.16 Range $9.87 - $15.67

Q3 2024

Shares 186,085 Value ($000) $2,412 Avg Close $13.36 Range $10.50 - $16.74

Q2 2024

Shares 234,751 Value ($000) $3,101 Avg Close $16.71 Range $11.83 - $23.86

Q1 2024

Shares 61,789 Value ($000) $1,456 Avg Close $24.77 Range $21.53 - $29.70

Q4 2023

Shares 29,644 Value ($000) $810 Avg Close $23.54 Range $19.35 - $28.78

Q3 2023

Shares 43,563 Value ($000) $1,182 Avg Close $24.75 Range $20.57 - $28.77

Q2 2023

Shares 15,591 Value ($000) $352 Avg Close $17.82 Range $10.64 - $24.14

Q1 2023

Shares 68,349 Value ($000) $770 Avg Close $12.78 Range $10.02 - $15.63

Q4 2022

Shares 88,211 Value ($000) $1,222 Avg Close $11.51 Range $8.19 - $14.55

Q3 2022

Shares 57,370 Value ($000) $633 Avg Close $12.71 Range $6.31 - $19.46

Q2 2022

Shares 121,913 Value ($000) $1,974 Avg Close $20.56 Range $14.58 - $31.33

Q1 2022

Shares 52,909 Value ($000) $1,544 Avg Close $30.56 Range $22.70 - $43.32

Q4 2021

Shares 18,787 Value ($000) $796 Avg Close $46.70 Range $35.02 - $60.92

Q3 2021

Shares 116,237 Value ($000) $5,787 Avg Close $51.55 Range $44.20 - $60.95

Q2 2021

Shares 121,039 Value ($000) $7,100 Avg Close $58.04 Range $41.76 - $69.22

Q1 2021

Shares 89,863 Value ($000) $5,254 Avg Close $67.60 Range $42.92 - $92.57

Q4 2020

Shares 45,297 Value ($000) $2,106 Avg Close $43.65 Range $33.55 - $52.75

Q1 2020

Shares 69,575 Value ($000) $1,278 Avg Close $22.82 Range $10.89 - $29.00

Q4 2019

Shares 72,602 Value ($000) $1,716 Avg Close $22.82 Range $19.08 - $26.07

Q3 2019

Shares 97,616 Value ($000) $2,144 Avg Close $27.89 Range $21.17 - $35.69

Q2 2019

Shares 106,657 Value ($000) $3,604 Avg Close $25.87 Range $19.54 - $36.15

Q1 2019

Shares 8,575 Value ($000) $222 Avg Close $22.33 Range $17.08 - $26.06

Q1 2018

Shares 25,308 Value ($000) $431 Avg Close $20.04 Range $16.03 - $24.80

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	98,572	$627	$6.21	$4.50 - $7.88
Q3 2025	83,181	$452	$5.32	$4.15 - $7.09
Q1 2025	189,960	$1,237	$8.34	$6.16 - $12.41
Q4 2024	179,800	$1,911	$12.16	$9.87 - $15.67
Q3 2024	186,085	$2,412	$13.36	$10.50 - $16.74
Q2 2024	234,751	$3,101	$16.71	$11.83 - $23.86
Q1 2024	61,789	$1,456	$24.77	$21.53 - $29.70
Q4 2023	29,644	$810	$23.54	$19.35 - $28.78
Q3 2023	43,563	$1,182	$24.75	$20.57 - $28.77
Q2 2023	15,591	$352	$17.82	$10.64 - $24.14
Q1 2023	68,349	$770	$12.78	$10.02 - $15.63
Q4 2022	88,211	$1,222	$11.51	$8.19 - $14.55
Q3 2022	57,370	$633	$12.71	$6.31 - $19.46
Q2 2022	121,913	$1,974	$20.56	$14.58 - $31.33
Q1 2022	52,909	$1,544	$30.56	$22.70 - $43.32
Q4 2021	18,787	$796	$46.70	$35.02 - $60.92
Q3 2021	116,237	$5,787	$51.55	$44.20 - $60.95
Q2 2021	121,039	$7,100	$58.04	$41.76 - $69.22
Q1 2021	89,863	$5,254	$67.60	$42.92 - $92.57
Q4 2020	45,297	$2,106	$43.65	$33.55 - $52.75
Q1 2020	69,575	$1,278	$22.82	$10.89 - $29.00
Q4 2019	72,602	$1,716	$22.82	$19.08 - $26.07
Q3 2019	97,616	$2,144	$27.89	$21.17 - $35.69
Q2 2019	106,657	$3,604	$25.87	$19.54 - $36.15
Q1 2019	8,575	$222	$22.33	$17.08 - $26.06
Q1 2018	25,308	$431	$20.04	$16.03 - $24.80