QuanterixQTRX
13F holders, Q1 2026 (March 31)128holders −6
15new positions
21sold out
6famous investors
$3.52avg. 13F price*
At the end of Q1 2026, 128 institutions reported holding Quanterix Corp. (QTRX) in their 13F filings, down 6 from Q4 2025. 15 opened new positions and 21 sold out. The largest holders were Ameriprise Financial Inc. ($12.5M), BlackRock, Inc. ($11.5M) and Portolan Capital Management, LLC ($10.4M). 6 famous investors held it, including Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Quanterix Corp.
- CUSIP
- 74766Q101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 15 | $9.7M |
| Exits | 21 | $6.6M |
All 13F filers, Q4 2025 → Q1 2026: 7,003,376 shares bought and 5,493,094 shares sold, net +1,510,282 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 128 holders
| Ameriprise Financial Inc. | 0.00% | Reduce -29.1% | 3,542,374 | $12.5M |
| BlackRock, Inc. | 0.00% | Reduce -2.9% | 3,277,595 | $11.5M |
| Portolan Capital Management, LLC | 0.55% | Reduce -34.9% | 2,945,823 | $10.4M |
| Blue Water Life Science Advisors, LP | 6.05% | Add +2.4% | 2,142,147 | $7.5M |
| William Blair Investment Management, LLC | 0.02% | Add +1.8% | 2,083,699 | $7.3M |
| Invenomic Capital Management LP | 0.31% | Add +28.4% | 1,932,386 | $6.8M |
| Vanguard Capital Management LLC | 0.00% | — | 1,784,613 | $6.3M |
| Levin Capital Strategies, L.P. | 0.39% | New | 1,464,052 | $5.2M |
| First Eagle Investment Management, LLC | 0.01% | Add +144.6% | 1,300,087 | $4.6M |
| Geode Capital Management, LLC | 0.00% | Reduce -7.4% | 994,764 | $3.5M |
| Trium Capital LLP | 2.54% | Add +21.6% | 994,217 | $3.5M |
| State Street Corp. | 0.00% | Add +0.6% | 898,277 | $3.2M |
| Empire Financial Management Company, LLC | 0.59% | Add +19.1% | 736,068 | $2.6M |
| Millennium Management | 0.00% | Add +71.2% | 689,167 | $2.4M |
| Envestnet Asset Management Inc. | 0.00% | Add +170.7% | 682,711 | $2.4M |
| Russell Investments Group, Ltd. | 0.00% | Add +150.6% | 641,981 | $2.3M |
| Marshall Wace, LLP | 0.00% | Add +301.1% | 622,380 | $2.2M |
| Williams Jones Wealth Management, LLC. | 0.03% | Reduce -4.0% | 613,439 | $2.2M |
| Morgan Stanley | 0.00% | Reduce -26.1% | 607,856 | $2.1M |
| Vanguard Portfolio Management LLC | 0.00% | — | 576,600 | $2.0M |
| Tikvah Management LLC | 0.62% | No change | 571,619 | $2.0M |
| Topline Capital Management, LLC | 0.33% | New | 563,135 | $2.0M |
| Pier Capital, LLC | 0.29% | New | 492,368 | $1.7M |
| Dimensional Fund Advisors LP | 0.00% | Add +13.8% | 443,118 | $1.6M |
| UBS Group AG | 0.00% | Add +21.0% | 376,982 | $1.3M |
| Northern Trust Corp. | 0.00% | Add +1.2% | 349,658 | $1.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -4.6% | 345,913 | $1.2M |
| Parkman Healthcare Partners LLC | 0.12% | Add +3.8% | 341,453 | $1.2M |
| Tudor Investment Corporation | 0.01% | Add +86.2% | 316,001 | $1.1M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 270,529 | $952K |
| Goldman Sachs Group Inc. | 0.00% | Add +8.8% | 270,187 | $951K |
| Royal Bank of Canada | 0.00% | Add +129.8% | 232,101 | $817K |
| FMR LLC | 0.00% | Add +14.7% | 183,356 | $645K |
| Ironwood Investment Management LLC | 0.25% | Reduce -1.4% | 169,825 | $598K |
| Jane Street Group, LLC | 0.00% | Add +124.3% | 155,655 | $548K |
| Renaissance Technologies | 0.00% | Add +1054.3% | 136,207 | $479K |
| BNP Paribas Financial Markets | 0.00% | Reduce -20.2% | 134,403 | $473K |
| Wells Fargo & Company | 0.00% | Reduce -20.7% | 129,024 | $454K |
| Bank of New York Mellon Corp | 0.00% | Add +2.3% | 126,363 | $445K |
| Clearstead Advisors, LLC | 0.00% | Add +2482300.0% | 124,120 | $437K |
| SCS Capital Management LLC | 0.00% | No change | 120,035 | $423K |
| Invesco Ltd. | 0.00% | Add +2.7% | 116,216 | $409K |
| XTX Topco Ltd | 0.01% | Add +50.7% | 111,660 | $393K |
| American Century Companies Inc. | 0.00% | Reduce -1.4% | 101,810 | $358K |
| Gsa Capital Partners LLP | 0.02% | Reduce -21.4% | 95,528 | $336K |
| Point72 Asset Management | 0.00% | New | 93,253 | $328K |
| Brevan Howard Capital Management LP | 0.00% | Add +420.1% | 87,386 | $308K |
| AQR Capital Management | 0.00% | Add +28.4% | 84,132 | $296K |
| State of Wisconsin Investment Board | 0.00% | Reduce -43.1% | 84,124 | $296K |
| Alliancebernstein L.P. | 0.00% | No change | 44,480 | $283K |
| Dynamic Technology Lab Private Ltd | 0.04% | New | 77,871 | $274K |
| Nuveen, LLC | 0.00% | Add +0.5% | 71,842 | $253K |
| HRT Financial LP | 0.00% | Add +450.7% | 71,686 | $252K |
| T. Rowe Price Associates Inc. | 0.00% | Add +56.2% | 68,372 | $241K |
| Bridgeway Capital Management, LLC | 0.00% | Add +58.7% | 68,226 | $240K |
| Citadel Advisors | 0.00% | Reduce -38.1% | 61,001 | $215K |
| Peddock Capital Advisors, LLC | 0.04% | No change | 52,105 | $183K |
| Rhumbline Advisers | 0.00% | Reduce -5.5% | 52,065 | $183K |
| Susquehanna International Group, LLP | 0.00% | Reduce -51.1% | 50,719 | $179K |
| Bank of America Corp. | 0.00% | Add +16.5% | 49,552 | $174K |
| PDT Partners, LLC | 0.01% | No change | 47,668 | $168K |
| Quantinno Capital Management LP | 0.00% | Reduce -25.4% | 47,594 | $168K |
| Schonfeld Strategic Advisors LLC | 0.00% | Reduce -30.7% | 42,786 | $151K |
| Fox Run Management, L.L.C. | 0.02% | New | 39,592 | $136K |
| Deutsche Bank AG | 0.00% | Add +18.6% | 35,460 | $125K |
| Two Sigma Investments, LP | 0.00% | Reduce -86.4% | 35,185 | $124K |
| Jump Financial, LLC | 0.00% | Reduce -80.3% | 28,430 | $100K |
| LPL Financial LLC | 0.00% | Add +3.2% | 25,681 | $90K |
| Axq Capital, LP | 0.01% | Add +121.2% | 24,354 | $86K |
| Engineers Gate Manager LP | 0.00% | New | 23,800 | $84K |
| Osaic Holdings, Inc. | 0.00% | Reduce -1.7% | 22,816 | $80K |
| MetLife Investment Management, LLC | 0.00% | Add +41.4% | 22,576 | $79K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -4.4% | 19,580 | $69K |
| Virtu Financial LLC | 0.00% | Reduce -7.9% | 18,988 | $67K |
| Vanguard Global Advisers, LLC | 0.00% | — | 18,525 | $65K |
| Allspring Global Investments Holdings, LLC | 0.00% | Add +10.6% | 17,216 | $61K |
| JPMorgan Chase & Co. | 0.00% | Reduce -84.7% | 17,411 | $60K |
| Barclays PLC | 0.00% | Reduce -86.1% | 16,746 | $59K |
| HUB Investment Partners, LLC | 0.00% | No change | 13,661 | $48K |
| Post Resch Tallon Group Inc. | 0.04% | Add +8.0% | 12,500 | $45K |
| Intech Investment Management LLC | 0.00% | Reduce -38.8% | 11,666 | $41K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -19.2% | 11,412 | $40K |
| Mercer Global Advisors Inc. | 0.00% | New | 10,875 | $38K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 10,062 | $35K |
| Cwm, LLC | 0.00% | Add +290.7% | 7,626 | $27K |
| New York State Common Retirement Fund | 0.00% | No change | 6,501 | $23K |
| Legal & General Group Plc | 0.00% | No change | 3,993 | $14K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +146.1% | 3,987 | $14K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 3,475 | $12K |
| California State Teachers Retirement System | 0.00% | Reduce -12.1% | 2,389 | $8K |
| Citigroup Inc. | 0.00% | Reduce -98.3% | 1,962 | $7K |
| Versant Capital Management, Inc | 0.00% | Add +3.0% | 1,832 | $6K |
| Pinnacle Wealth Planning Services, Inc. | 0.00% | New | 1,799 | $6K |
| Essential Partners LLC | 0.00% | Add +5820.7% | 1,717 | $6K |
| PNC Financial Services Group, Inc. | 0.00% | Add +34.6% | 1,573 | $6K |
| Sterling Capital Management LLC | 0.00% | Reduce -45.1% | 1,275 | $4K |
| NewEdge Advisors, LLC | 0.00% | Reduce -9.1% | 1,000 | $4K |
| Group One Trading LLC | 0.00% | New | 872 | $3K |
| Wilmington Savings Fund Society, FSB | 0.00% | No change | 800 | $3K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +63.7% | 771 | $3K |
"% of holder's portfolio" is QTRX's weight in each manager's 13F, not the share of Quanterix Corp. the manager owns.