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Disclosery

QTRX QUANTERIX CORP

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COMMON STOCK (common), issuer CIK 1503274

130 managers (134 13F filers) reported a position in QTRX shares at 2025-12-31, 35,112,562 shares in all. 20 filers opened a position and 13 filers sold out during the quarter.

Managers
130
13F filers
134
New
20
Added
42
Reduced
43
Sold out
13
Shares held by filers
35,112,562

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC4,996,073$31.8M0.01%+752,56113F-HRTimelineGroup
Portolan Capital Management, LLCin group Portolan Capital Management, …4,525,553$28.8M1.54%+265,70213F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.3,375,910$21.5M<0.01%+262,93013F-HRTimelineGroup
VANGUARD GROUP INCgroup of 2 filers holding2,691,005$17.1M+30,482Timeline
Blue Water Life Science Advisors, LP2,092,147$13.3M8.35%+1,134,40013F-HRTimeline
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC2,046,449$13M0.04%+731,16913F-HRTimeline
Invenomic Capital Management LP1,505,208$9.57M0.46%+112,20313F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,073,967$6.83M<0.01%+62,07713F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP893,401$5.68M<0.01%+73,86713F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY822,998$5.23M<0.01%+16,73513F-HR/ATimelineGroup
Trium Capital LLP817,451$5.2M4.04%+128,85413F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Williams Jones Wealth Management, LLC.638,939$4.06M0.05%-47,52513F-HRTimeline
Empire Financial Management Company, LLC617,830$3.93M0.85%+165,40013F-HRTimeline
EASTERLY INVESTMENT PARTNERS LLC616,681$3.92M0.24%-635,50313F-HRTimeline
Tikvah Management LLCin group Tikvah Management LLC571,619$3.64M0.97%013F-HRTimelineGroup
First Eagle Investment Management, LLCin group First Eagle Investment Manage…531,427$3.38M0.01%new13F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC402,631$2.56M<0.01%-806,56813F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP389,466$2.48M<0.01%-317,60513F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co362,740$2.31M<0.01%+31,49413F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding345,748$2.2M-46,516Timeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP345,564$2.2M<0.01%-8,09413F-HRTimelineGroup
Parkman Healthcare Partners LLC328,956$2.09M0.2%+76,74513F-HRTimeline
UBS Group AGgroup of 2 filers holding311,970$1.98M-61,630Timeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…256,140$1.63M<0.01%-177,92013F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC252,211$1.6M<0.01%-263,65013F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC248,242$1.58M<0.01%-29,83313F-HR/ATimelineGroup
IRONWOOD INVESTMENT MANAGEMENT LLC172,330$1.1M0.46%-21,74413F-HRTimeline
TUDOR INVESTMENT CORP ET AL169,695$1.08M0.01%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS168,430$1.07M<0.01%+18,10313F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN162,686$1.03M<0.01%+18,36813F-HRTimelineGroup
FMR LLCin group FMR LLC159,907$1.02M<0.01%+42,77413F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding158,788$1.01M-80,850Timeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP155,169$987K<0.01%-453,53913F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD147,824$940K<0.01%-47,93513F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC144,095$916K0.01%+25,74313F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp123,521$786K<0.01%+5,98313F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP121,525$773K0.07%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC120,203$764K<0.01%+52,93413F-HRTimelineGroup
SCS Capital Management LLC120,035$763K0.01%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO114,021$725K<0.01%-113,75013F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.113,200$720K<0.01%+14,50813F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC112,380$715K<0.01%-106,19813F-HRTimelineGroup
Aberdeen Group plcin group Aberdeen Group plc104,039$662K<0.01%-460,54213F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC103,208$656K<0.01%+5,61113F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA101,001$642K<0.01%-146,67713F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC98,572$627K<0.01%+15,39113F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd74,093$471K0.01%+62,78313F-HRTimelineGroup
Nuveen, LLCin group TIAA71,455$454K<0.01%013F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC69,383$441K<0.01%-80,39613F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC65,522$417K<0.01%-92,45313F-HRTimelineGroup
Quantinno Capital Management LP63,791$406K<0.01%+36,28113F-HRTimeline
Clarius Group, LLC62,060$395K0.02%013F-HRTimeline
Schonfeld Strategic Advisors LLC61,722$393K<0.01%-74,85313F-HRTimeline
Mount Lucas Management LP56,500$359K0.16%-3,50013F-HRTimeline
RHUMBLINE ADVISERS55,114$351K<0.01%-1,94313F-HRTimeline
PEDDOCK CAPITAL ADVISORS, LLC52,105$331K0.07%013F-HRTimeline
PDT Partners, LLC47,668$303K0.02%013F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.45,627$290K<0.01%new13F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.44,480$283K<0.01%013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/43,778$279K<0.01%-15,00013F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC43,000$273K0.01%013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/42,547$271K<0.01%-45,81913F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\29,906$190K<0.01%+1,81713F-HRTimelineGroup
Numerai GP LLC29,762$189K0.02%-58,30213F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC34,978$175K<0.01%new13F-HRTimeline
PARAGON ASSOCIATES & PARAGON ASSOCIATES…25,000$159K0.33%-75,67113F-HRTimeline
LPL Financial LLC24,877$158K<0.01%new13F-HRTimeline
ExodusPoint Capital Management, LP24,080$153K<0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.23,221$148K<0.01%-1,51513F-HRTimelineGroup
Quadrature Capital Ltdin group Quadrature Capital Ltd21,707$138K<0.01%new13F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC20,626$131K0.01%new13F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…20,476$130K<0.01%+1,36713F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC19,065$121K<0.01%-9613F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…16,800$107K<0.01%-6,44413F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…15,967$102K<0.01%-6,97513F-HRTimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …15,560$100K<0.01%+1,45713F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …14,128$89.9K<0.01%+32713F-HRTimelineGroup
HUB Investment Partners, LLC13,661$86.9K<0.01%+1,50013F-HRTimeline
HRT FINANCIAL LP13,018$82K<0.01%new13F-HRTimeline
Jain Global LLC12,677$80.6K<0.01%-4,70013F-HRTimeline
DekaBank Deutsche Girozentrale4,566$80K<0.01%013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC11,800$75K<0.01%new13F-HRTimeline
Post Resch Tallon Group Inc.11,575$73.6K0.06%-50013F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC11,238$71.5K<0.01%-6,22713F-HRTimeline
AXQ CAPITAL, LP11,009$70K0.02%new13F-HRTimeline
Police & Firemen's Retirement System of…10,062$64K<0.01%013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND6,501$41.3K<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\6,357$40.4K<0.01%+6,31813F-HRTimelineGroup
Farther Finance Advisors, LLC4,078$25.9K<0.01%new13F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc3,993$25.4K<0.01%+68613F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…3,475$22.1K<0.01%013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…2,718$17.3K<0.01%+18013F-HRTimeline
Sterling Capital Management LLC2,323$14.8K<0.01%-25613F-HRTimeline
CWM, LLCin group CWM, LLC1,952$12K<0.01%+65813F-HRTimelineGroup
Versant Capital Management, Inc1,778$11.3K<0.01%+35713F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,620$10.3K<0.01%-1,40813F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,513$9.62K<0.01%-95013F-HR/ATimelineGroup
AMALGAMATED BANK1,387$9K<0.01%+19813F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1,169$7.43K<0.01%+23513F-HRTimelineGroup
NewEdge Advisors, LLC1,100$7K<0.01%013F-HRTimeline
QUADRANT CAPITAL GROUP LLC961$6.11K<0.01%new13F-HRTimeline
Wilmington Savings Fund Society, FSB800$5.09K<0.01%013F-HRTimeline
Caitong International Asset Management …763$4.85K<0.01%new13F-HR/ATimeline
GAMMA Investing LLC571$3.63K<0.01%+40213F-HRTimeline
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…563$3.58K<0.01%013F-HRTimelineGroup
Pinnacle Bancorp, Inc.520$3.31K<0.01%013F-HRTimeline
SIGNATUREFD, LLC387$2.46K<0.01%new13F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.345$2.19K<0.01%-38413F-HRTimelineGroup
AlphaQuest LLC336$2.14K<0.01%013F-HRTimeline
SIT INVESTMENT ASSOCIATES INCin group SIT INVESTMENT ASSOCIATES INC272$2K<0.01%013F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…223$1.42K<0.01%+8613F-HRTimelineGroup
LANARK FINANCIAL, INC.179$1.14K<0.01%-10213F-HRTimeline
Arax Advisory Partners154$979<0.01%-26513F-HRTimeline
True Wealth Design, LLC151$961<0.01%013F-HRTimeline
North Star Investment Management Corp.100$636<0.01%013F-HRTimeline
Concord Wealth Partnersin group Concord Wealth Partners100$636<0.01%013F-HRTimelineGroup
Rialto Wealth Management, LLC96$611<0.01%013F-HRTimeline
Basecamp Wealth Advisors LLC87$553<0.01%13F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/85$541<0.01%new13F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP73$464<0.01%013F-HRTimelineGroup
SBI Securities Co., Ltd.62$394<0.01%013F-HRTimeline
Cypress Capital Management LLC (WY)60$382<0.01%013F-HRTimeline
Allworth Financial LP56$357<0.01%+813F-HRTimeline
STRS OHIO29$184<0.01%013F-HRTimeline
Essential Partners LLC29$184<0.01%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC13$83<0.01%new13F-HRTimeline
IFP Advisors, Inc8$51<0.01%-413F-HRTimeline
Clearstead Advisors, LLC5$32<0.01%-12713F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK1$6<0.01%013F-HRTimelineGroup
Covestor Ltd10$00%013F-HRTimelineValue filed as zero, left out of ratios.