Question 1

How many shares of QTRX does CHARLES SCHWAB INVESTMENT MANAGEMENT INC own?

Accepted Answer

As of 2026-Q1, CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds 345,913 shares of QTRX (QUANTERIX CORP).

Question 2

What is CHARLES SCHWAB INVESTMENT MANAGEMENT INC's QTRX position worth?

Accepted Answer

As of 2026-Q1, CHARLES SCHWAB INVESTMENT MANAGEMENT INC's QTRX position is worth $1.2M.

Question 3

Is CHARLES SCHWAB INVESTMENT MANAGEMENT INC buying or selling QTRX?

Accepted Answer

In 2026-Q1, CHARLES SCHWAB INVESTMENT MANAGEMENT INC decreased their QTRX position (-4.6% change in shares).

Question 4

When did CHARLES SCHWAB INVESTMENT MANAGEMENT INC first buy QTRX?

Accepted Answer

Based on available 13F filings, CHARLES SCHWAB INVESTMENT MANAGEMENT INC first reported a position in QTRX in 2018-Q4. They have held the position across 30 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Decreased	345,913	-4.6%	$1.2M	0.0%	$5.87	0
2025-Q4	Increased	362,740	+9.5%	$2.3M	0.0%	$6.33	29
2025-Q3	Increased	331,246	+10.8%	$1.8M	0.0%	$5.25	29
2025-Q2	Increased	298,989	+2.1%	$2M	0.0%	$6.65	26
2025-Q1	Increased	292,805	+9.8%	$1.9M	0.0%	$6.56	28
2024-Q4	Decreased	266,615	-18.1%	$2.8M	0.0%	$10.90	0
2024-Q3	Decreased	325,604	-0.9%	$4.2M	0.0%	$12.73	0
2024-Q2	Increased	328,519	+4.2%	$4.3M	0.0%	$13.21	28
2024-Q1	Increased	315,383	+6.6%	$7.4M	0.0%	$23.56	29
2023-Q4	Increased	295,811	+10.8%	$8.1M	0.0%	$27.34	30
2023-Q3	Increased	267,027	+2.3%	$7.2M	0.0%	$27.14	28
2023-Q2	Increased	261,046	+2.8%	$5.9M	0.0%	$23.22	28
2023-Q1	Increased	253,886	+0.4%	$2.9M	0.0%	$10.85	26
2022-Q4	Increased	252,785	+1.4%	$3.5M	0.0%	$13.85	27
2022-Q3	Increased	249,300	+3.6%	$2.7M	0.0%	$9.86	27
2022-Q2	Decreased	240,590	-6.7%	$3.9M	0.0%	$16.71	0
2022-Q1	Increased	257,718	+3.5%	$7.5M	0.0%	$28.58	28
2021-Q4	Decreased	249,104	-0.2%	$10.6M	0.0%	$42.26	0
2021-Q3	Increased	249,692	+15.0%	$12.4M	0.0%	$48.21	32
2021-Q2	Increased	217,040	+8.8%	$12.7M	0.0%	$63.94	30
2021-Q1	Increased	199,479	+35.9%	$11.7M	0.0%	$54.66	36
2020-Q4	Increased	146,835	+2.3%	$6.8M	0.0%	$47.51	28
2020-Q3	Increased	143,511	+38.5%	$4.8M	0.0%	$33.87	35
2020-Q2	Increased	103,613	+19.3%	$2.8M	0.0%	$26.77	31
2020-Q1	Increased	86,888	+1.3%	$1.6M	0.0%	$18.86	26
2019-Q4	Increased	85,796	+4.8%	$2M	0.0%	$23.37	27
2019-Q3	Increased	81,832	+29.3%	$1.8M	0.0%	$21.72	32
2019-Q2	Increased	63,271	+22.6%	$2.1M	0.0%	$33.79	31
2019-Q1	Increased	51,589	+6.0%	$1.3M	0.0%	$25.83	27
2018-Q4	New	48,666	-	$892,000	0.0%	$18.36	34

QTRX30 quarters

QTRX
30 quarters