Quanterix Corporation (QTRX) Institutional Ownership & Insider Trading

133 institutions reported holding Quanterix Corporation shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 3 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

QTRXQuanterix CorporationFollow QTRX — free

Medical Devices · Healthcare

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Market cap: 135.3M
P/E TTM: —
Dividend yield: —
52-week: —
Next earnings: 10 Nov, in 16 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

133 institutions held 68.0% of the shares. Across filers that reported both quarters, shares held changed -15.8%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	133	32	-15.8%	41	33	29	30
Mar 26	127	36	+4.7%	49	14	35	18
Dec 25	131	35	+1.6%	42	19	42	12
Sep 25	126	36	+2.9%	45	14	34	23
Jun 25	136	35	-1.6%	43	21	40	34
Mar 25	148	35	-0.6%	52	29	34	35
Dec 24	151	35	+4.2%	51	19	42	20
Sep 24	148	33	-0.0%	38	20	47	27

Quanterix Corporation — questions

Who owns Quanterix Corporation stock?: 133 institutions reported Quanterix Corporation shares in 13F filings for the quarter ended 2026-06-30. The largest: First Eagle Investment Management, LLC (11.6%), BlackRock, Inc. (7.7%), Blue Water Life Science Advisors, LP (7.3%).
Are Quanterix Corporation insiders buying or selling?: 3 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from Quanterix Corporation's own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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