QuanterixQTRX
13F holders, Q3 2025 (September 30)129holders −8
19new positions
25sold out
3famous investors
$5.43avg. 13F price*
At the end of Q3 2025, 129 institutions reported holding Quanterix Corp. (QTRX) in their 13F filings, down 8 from Q2 2025. 19 opened new positions and 25 sold out. The largest holders were Portolan Capital Management, LLC ($23.1M), Ameriprise Financial Inc. ($23.0M) and BlackRock, Inc. ($16.9M). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Cliff Asness (0.0% of AQR Capital Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Quanterix Corp.
- CUSIP
- 74766Q101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 19 | $2.2M |
| Exits | 25 | $11.8M |
All 13F filers, Q2 2025 → Q3 2025: 5,326,601 shares bought and 4,271,224 shares sold, net +1,055,377 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 129 holders
| Portolan Capital Management, LLC | 1.25% | Add +17.2% | 4,259,851 | $23.1M |
| Ameriprise Financial Inc. | 0.01% | Add +0.2% | 4,243,512 | $23.0M |
| BlackRock, Inc. | 0.00% | Add +6.4% | 3,112,980 | $16.9M |
| Vanguard Group Inc. | 0.00% | Add +4.7% | 2,647,515 | $14.4M |
| Invenomic Capital Management LP | 0.40% | Add +21.7% | 1,393,005 | $7.6M |
| William Blair Investment Management, LLC | 0.02% | Add +16.6% | 1,315,280 | $7.1M |
| Easterly Investment Partners LLC | 0.46% | Add +15.6% | 1,252,184 | $6.8M |
| Millennium Management | 0.01% | Add +9880.2% | 1,209,199 | $6.6M |
| Geode Capital Management, LLC | 0.00% | Add +14.1% | 1,011,890 | $5.5M |
| Kent Lake PR LLC | 2.78% | Reduce -56.5% | 1,001,000 | $5.4M |
| Blue Water Life Science Advisors, LP | 4.74% | No change | 957,747 | $5.2M |
| State Street Corp. | 0.00% | Add +7.2% | 819,534 | $4.5M |
| Morgan Stanley | 0.00% | Add +4.5% | 806,263 | $4.4M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -12.0% | 707,071 | $3.8M |
| Trium Capital LLP | 1.47% | Add +17.4% | 688,597 | $3.7M |
| Williams Jones Wealth Management, LLC. | 0.04% | Add +1.6% | 686,464 | $3.7M |
| Marshall Wace, LLP | 0.00% | Add +37.0% | 608,708 | $3.3M |
| Tikvah Management LLC | 0.93% | No change | 571,619 | $3.1M |
| Aberdeen Group plc | 0.00% | Add +34.1% | 564,581 | $3.1M |
| Envestnet Asset Management Inc. | 0.00% | Add +122.7% | 515,861 | $2.8M |
| Empire Financial Management Company, LLC | 0.56% | Add +264.9% | 452,430 | $2.5M |
| Russell Investments Group, Ltd. | 0.00% | Add +2.2% | 434,060 | $2.4M |
| UBS Group AG | 0.00% | Reduce -3.0% | 373,600 | $2.0M |
| Northern Trust Corp. | 0.00% | Add +10.2% | 353,658 | $1.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +10.8% | 331,246 | $1.8M |
| Cubist Systematic Strategies, LLC | 0.02% | Add +166.4% | 314,418 | $1.7M |
| Goldman Sachs Group Inc. | 0.00% | Add +9.6% | 278,075 | $1.5M |
| Parkman Healthcare Partners LLC | 0.15% | Reduce -51.1% | 252,211 | $1.4M |
| Two Sigma Investments, LP | 0.00% | Add +3.0% | 250,074 | $1.4M |
| Royal Bank of Canada | 0.00% | Add +11.7% | 247,678 | $1.3M |
| JPMorgan Chase & Co. | 0.00% | Reduce -12.6% | 227,771 | $1.2M |
| Citigroup Inc. | 0.00% | Reduce -22.1% | 218,578 | $1.2M |
| State of Wisconsin Investment Board | 0.00% | Reduce -32.4% | 195,759 | $1.1M |
| Ironwood Investment Management LLC | 0.46% | Add +811.3% | 194,074 | $1.1M |
| AQR Capital Management | 0.00% | Add +79.0% | 157,975 | $858K |
| BNP Paribas Financial Markets | 0.00% | Add +336.9% | 150,327 | $816K |
| Jane Street Group, LLC | 0.00% | Add +7.0% | 149,779 | $813K |
| Wells Fargo & Company | 0.00% | Add +4.0% | 144,318 | $784K |
| Two Sigma Advisers, LP | 0.00% | Add +4.2% | 142,190 | $772K |
| Susquehanna International Group, LLP | 0.00% | Add +120.7% | 141,969 | $771K |
| Schonfeld Strategic Advisors LLC | 0.01% | Reduce -58.1% | 136,575 | $742K |
| SCS Capital Management LLC | 0.01% | Reduce -66.1% | 120,035 | $652K |
| Jump Financial, LLC | 0.01% | Reduce -6.5% | 118,352 | $643K |
| Bank of New York Mellon Corp | 0.00% | Add +5.0% | 117,538 | $638K |
| FMR LLC | 0.00% | Reduce -7.5% | 117,133 | $636K |
| Paragon Associates & Paragon Associates II Joint Venture | 0.97% | New | 100,671 | $547K |
| Invesco Ltd. | 0.00% | Add +31.3% | 98,692 | $536K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | Reduce -38.4% | 97,669 | $530K |
| American Century Companies Inc. | 0.00% | Add +13.2% | 97,597 | $530K |
| Bank of America Corp. | 0.00% | Add +43.0% | 88,366 | $480K |
| Numerai GP LLC | 0.07% | New | 88,064 | $478K |
| Citadel Advisors | 0.00% | New | 83,181 | $452K |
| Nuveen, LLC | 0.00% | No change | 71,455 | $388K |
| Barclays PLC | 0.00% | Reduce -14.8% | 67,269 | $365K |
| Clarius Group, LLC | 0.02% | No change | 62,060 | $337K |
| Mount Lucas Management LP | 0.15% | No change | 60,000 | $326K |
| T. Rowe Price Associates Inc. | 0.00% | Add +48.4% | 58,778 | $320K |
| Rhumbline Advisers | 0.00% | Reduce -5.9% | 57,057 | $310K |
| Peddock Capital Advisors, LLC | 0.06% | Add +196.0% | 52,105 | $283K |
| PDT Partners, LLC | 0.02% | No change | 47,668 | $259K |
| Alliancebernstein L.P. | 0.00% | No change | 44,480 | $242K |
| Bridgeway Capital Management, LLC | 0.01% | New | 43,000 | $233K |
| PharVision Advisers, LLC | 0.11% | New | 36,144 | $196K |
| Deutsche Bank AG | 0.00% | Add +15.5% | 28,089 | $153K |
| Quantinno Capital Management LP | 0.00% | Reduce -34.4% | 27,510 | $149K |
| Brevan Howard Capital Management LP | 0.00% | Add +60.3% | 23,244 | $126K |
| MetLife Investment Management, LLC | 0.00% | Reduce -3.7% | 22,942 | $125K |
| Osaic Holdings, Inc. | 0.00% | Add +20.7% | 24,736 | $113K |
| Atom Investors LP | 0.01% | New | 19,571 | $106K |
| Intech Investment Management LLC | 0.00% | Add +13.4% | 19,161 | $104K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -6.5% | 19,109 | $104K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -2.5% | 17,465 | $95K |
| Jain Global LLC | 0.00% | New | 17,377 | $94K |
| Prelude Capital Management, LLC | 0.01% | Reduce -8.8% | 15,393 | $84K |
| DekaBank Deutsche Girozentrale | 0.00% | No change | 4,566 | $79K |
| State of Wyoming | 0.01% | Reduce -4.8% | 14,109 | $77K |
| Allspring Global Investments Holdings, LLC | 0.00% | Reduce -1.0% | 14,103 | $77K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +1.7% | 13,801 | $75K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Reduce -13.4% | 13,008 | $71K |
| HUB Investment Partners, LLC | 0.00% | No change | 12,161 | $66K |
| Post Resch Tallon Group Inc. | 0.06% | Reduce -0.8% | 12,075 | $66K |
| R Squared Ltd | 0.03% | New | 11,771 | $64K |
| XTX Topco Ltd | 0.00% | Reduce -79.8% | 11,310 | $61K |
| Kestra Private Wealth Services, LLC | 0.00% | Add +1.8% | 10,294 | $56K |
| HSBC Holdings PLC | 0.00% | Reduce -64.9% | 10,516 | $56K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 10,062 | $55K |
| Quantbot Technologies LP | 0.00% | Reduce -72.8% | 8,673 | $47K |
| New York State Common Retirement Fund | 0.00% | No change | 6,501 | $35K |
| Quarry LP | 0.01% | Add +277300.0% | 5,548 | $30K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 3,475 | $19K |
| Legal & General Group Plc | 0.00% | No change | 3,307 | $18K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -42.6% | 3,028 | $16K |
| Sterling Capital Management LLC | 0.00% | Add +195.1% | 2,579 | $14K |
| California State Teachers Retirement System | 0.00% | Reduce -2.5% | 2,538 | $14K |
| Rockefeller Capital Management L.P. | 0.00% | New | 2,463 | $13K |
| Simplex Trading, LLC | 0.00% | Reduce -50.4% | 1,563 | $8K |
| Versant Capital Management, Inc | 0.00% | Reduce -83.1% | 1,421 | $8K |
| Cwm, LLC | 0.00% | Reduce -54.2% | 1,294 | $7K |
| Amalgamated Bank | 0.00% | No change | 1,189 | $6K |
| NewEdge Advisors, LLC | 0.00% | No change | 1,100 | $6K |
"% of holder's portfolio" is QTRX's weight in each manager's 13F, not the share of Quanterix Corp. the manager owns.