Explore more topics
Public ownership evidence

Quanterix Corporation Common Stock (QTRX) Ownership Disclosures

Read QTRX insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-14T23:32:50.005Z

Jump to a section

Read one actual disclosure before using it

Show the table · 1 row, 6 columns

Scroll sideways to compare all columns. Select a heading to sort.

2026-10-022026-10-01Mendel ScottA4,398Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-01 and its public availability date is 2026-10-02. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001515051-26-000005 ↗SEC 0001207928-26-000011 ↗SEC 0002148276-26-000002 ↗

Recent Form 4 activity

Show the table · 6 rows, 6 columns

Scroll sideways to compare all columns. Select a heading to sort.

2026-10-022026-10-01Mendel ScottA4,398Not reported
2026-10-022026-10-01DONNELLY WILLIAM PA6,964Not reported
2026-09-172026-09-15Gute James Edward Jr.A260,315Not reported
2026-08-152026-08-13DONNELLY WILLIAM PP72,245Not reported
2026-08-152026-08-12DONNELLY WILLIAM PP27,155Not reported
2026-07-172026-07-15Faessler Jason F.A141,820Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Scroll sideways to compare all columns. Select a heading to sort.

First Eagle Investment Management, LLC2026-06-302026-08-252,753,165$11,893,673None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25585$2,527None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-252,527$585,000None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2025,731$111,158None
Transamerica Financial Advisors, LLC2026-06-302026-08-1839$168None
Susquehanna Portfolio Strategies, LLC2026-06-302026-08-15148,618$642,030None
XTX Topco Ltd2026-06-302026-08-15228,035$985,111None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15310,701$1,342,228None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15310,701$1,342,228None
Qube Research & Technologies Ltd2026-06-302026-08-1511,987$51,784None
OSAIC HOLDINGS, INC.2026-06-302026-08-1524,176$104,438None
Schonfeld Strategic Advisors LLC2026-06-302026-08-1512,663$54,702None
MetLife Investment Management, LLC2026-06-302026-08-1524,801$107,140None
Engineers Gate Manager LP2026-06-302026-08-1514,807$63,966None
JANE STREET GROUP, LLC2026-06-302026-08-156,990$30,197None
JANE STREET GROUP, LLC2026-06-302026-08-15412,060$1,780,099None
JANE STREET GROUP, LLC2026-06-302026-08-1514,300$61,776Call
Legal & General Group Plc2026-06-302026-08-153,993$17,270None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1521,800$94,176Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15156,396$675,631None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1512,224$52,808None
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC2026-06-302026-08-1538,961$168,312None
Aigen Investment Management, LP2026-06-302026-08-1524,328$105,097None
Blue Water Life Science Advisors, LP2026-06-302026-08-153,474,202$15,008,553None
IRONWOOD INVESTMENT MANAGEMENT LLC2026-06-302026-08-15170,555$736,798None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-1540,662$175,660None
Balyasny Asset Management L.P.2026-06-302026-08-15260,000$1,123,200Call
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-1573$315None
AMERIPRISE FINANCIAL INC2026-06-302026-08-15987,424$4,265,671None
Cerity Partners LLC2026-06-302026-08-1515,267$65,953None
Cerity Partners LLC2026-06-302026-08-1559,135$255,464None
Cerity Partners LLC2026-06-302026-08-153,681$15,902None
Cresset Asset Management, LLC2026-06-302026-08-1510,000$43,200None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1577$333None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-156,888$29,756None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-151,328,880$5,740,762None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-152,815$12,161None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-154,345$18,770None
MANUFACTURERS LIFE INSURANCE COMPANY, THE2026-06-302026-08-1513,788$59,564None
ROYAL BANK OF CANADA2026-06-302026-08-151,292$6,000None
ROYAL BANK OF CANADA2026-06-302026-08-15183$1,000None
ALLIANCEBERNSTEIN L.P.2026-06-302026-08-1556,780$199,866None
BRIDGEWAY CAPITAL MANAGEMENT, LLC2026-06-302026-08-1568,226$294,736None
CANADA PENSION PLAN INVESTMENT BOARD2026-06-302026-08-1538,100$164,592None
D. E. Shaw & Co., Inc.2026-06-302026-08-1517,672$76,343None
CITADEL ADVISORS LLC2026-06-302026-08-15229,736$992,460None
Portolan Capital Management, LLC2026-06-302026-08-151,899,308$8,205,011None
GROUP ONE TRADING LLC2026-06-302026-08-151,933$8,351None
Point72 Asset Management, L.P.2026-06-302026-08-15225,653$974,821None
Invesco Ltd.2026-06-302026-08-15138,816$599,685None

90-day public filing window, up to 50 source positions.

First Eagle Investment Management, LLC ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗MERCER GLOBAL ADVISORS INC /ADV ↗Transamerica Financial Advisors, LLC ↗Susquehanna Portfolio Strategies, LLC ↗XTX Topco Ltd ↗CHARLES SCHWAB INVESTMENT MANAGEMENT INC ↗Sixth Street Partners Management Company, L.P. ↗Qube Research & Technologies Ltd ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

Show the table · 0 rows, 5 columns

Scroll sideways to compare all columns. Select a heading to sort.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.