Company · Ownership research

Quanterix Corp QTRX

CIK 0001503274 · CUSIP 74766Q101

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 74766Q101 (QTRX), not CUSIP 74766Q951 (QTRX), CUSIP 74766Q901 (QTRX), and does not merge CUSIPs.

This page lists the top 20 of 166 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock Inc. CIK 1364742 · View history	$73.57M 3,122,478 shares	0.00%	-68.15K(-2.10%)Reduced	SEC filing ↗ May 10, 2024	▾
02	ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history	$59.64M 2,531,528 shares	0.02%	+1.97M(+351.80%)Added	SEC filing ↗ May 14, 2024	▾
03	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$53.37M 2,265,195 shares	0.05%	+55.63K(+2.50%)Added	SEC filing ↗ May 15, 2024	▾
04	VANGUARD GROUP INC CIK 102909 · View history	$48.76M 2,069,423 shares	0.00%	+14.39K(+0.70%)Added	SEC filing ↗ May 10, 2024	▾
05	LORD, ABBETT & CO. LLC CIK 728100 · Amended · View history	$41.40M 1,757,153 shares	0.13%	+326.88K(+22.90%)Added	SEC filing ↗ Oct 7, 2024	▾
06	GILDER GAGNON HOWE & CO LLC CIK 902464 · View history	$27.66M 1,173,918 shares	0.35%	-28.49K(-2.40%)Reduced	SEC filing ↗ May 15, 2024	▾
07	Portolan Capital Management, LLC CIK 1350290 · View history	$27.40M 1,162,829 shares	2.09%	-134.26K(-10.40%)Reduced	SEC filing ↗ May 15, 2024	▾
08	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$23.48M 996,636 shares	0.01%	+22.52K(+2.30%)Added	SEC filing ↗ May 10, 2024	▾
09	ASHFORD CAPITAL MANAGEMENT INC CIK 897070 · View history	$19.59M 831,535 shares	2.65%	-350(0.00%)Reduced	SEC filing ↗ May 15, 2024	▾
10	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$19.43M 824,712 shares	0.01%	+154.00K(+23.00%)Added	SEC filing ↗ May 15, 2024	▾
11	STATE STREET CORP CIK 93751 · View history	$19.21M 815,487 shares	0.00%	+6.44K(+0.80%)Added	SEC filing ↗ May 15, 2024	▾
12	Invesco Ltd. CIK 914208 · View history	$19.10M 810,532 shares	0.00%	-59.49K(-6.80%)Reduced	SEC filing ↗ May 14, 2024	▾
13	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$18.83M 798,968 shares	0.00%	+35.12K(+4.60%)Added	SEC filing ↗ May 13, 2024	▾
14	EMERALD ADVISERS, LLC CIK 1015083 · View history	$16.62M 705,447 shares	0.67%	+130.99K(+22.80%)Added	SEC filing ↗ May 8, 2024	▾
15	Granahan Investment Management, LLC CIK 1026710 · View history	$15.83M 671,779 shares	0.56%	+4.92K(+0.70%)Added	SEC filing ↗ May 15, 2024	▾
16	BAILLIE GIFFORD & CO CIK 1088875 · View history	$14.69M 623,355 shares	0.01%	-8.22K(-1.30%)Reduced	SEC filing ↗ May 1, 2024	▾
17	Tikvah Management LLC CIK 1606477 · View history	$13.47M 571,619 shares	4.22%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
18	Nuveen Asset Management, LLC CIK 1521019 · View history	$13.39M 568,309 shares	0.00%	+44.36K(+8.50%)Added	SEC filing ↗ May 13, 2024	▾
19	EMERALD MUTUAL FUND ADVISERS TRUST CIK 1352895 · View history	$13.17M 558,841 shares	0.69%	+85.09K(+18.00%)Added	SEC filing ↗ May 8, 2024	▾
20	FARALLON CAPITAL MANAGEMENT LLC CIK 909661 · Amended · View history	$11.10M 471,000 shares	0.07%	+287.00K(+156.00%)Added	SEC filing ↗ May 24, 2024	▾

Showing 20 / 166 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

166

Cancelled or null records excluded

Disclosed shares

32,335,246

Not deduplicated across managers

Disclosed value

$761.42M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Quanterix Corp · Q1 2024

Explore all 166 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.