Quanterix Corp
QTRX- Exchange
- Nasdaq
- Industry
- Laboratory Analytical Instruments
- SEC CIK
- 0001503274
In the last 90 days, Quanterix Corp insiders filed 1 open-market purchase and 0 sales; 132 institutions reported holding it in 13F filings for Q2 2026, worth $127.1M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Quanterix Corp as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 128
- −4 vs. Q4 2025
- Shares held
- 36.4M
- +4.07M (+12.6%) vs. Q4 2025
- Total value
- $128.4M
- −$77.5M (−37.6%) vs. Q4 2025
- New holders
- 19
- 51 more added
- Sold out
- 23
- 36 more reduced
2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting QTRX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 132 | $127.1M |
| Q1 2026 | 128 | $128.4M |
| Q4 2025 | 134 | $223.3M |
| Q3 2025 | 129 | $193.7M |
| Q2 2025 | 138 | $230.9M |
| Q1 2025 | 150 | $228.2M |
| Q4 2024 | 152 | $372.0M |
| Q3 2024 | 149 | $430.8M |
| Q2 2024 | 155 | $428.6M |
| Q1 2024 | 165 | $761.4M |
| Q4 2023 | 172 | $864.1M |
| Q3 2023 | 158 | $878.5M |
| Q2 2023 | 138 | $733.4M |
| Q1 2023 | 136 | $370.3M |
| Q4 2022 | 132 | $437.9M |
| Q3 2022 | 145 | $328.8M |
| Q2 2022 | 136 | $519.0M |
| Q1 2022 | 143 | $935.5M |
| Q4 2021 | 153 | $1.34B |
| Q3 2021 | 152 | $1.53B |
| Q2 2021 | 159 | $1.76B |
| Q1 2021 | 162 | $1.66B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Quanterix Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Parkman Healthcare Partners LLC | 341,453 | $1.20M | 0.12% | +12,497+3.8% | Added |
| Charles Schwab Investment Management Inc | 345,913 | $1.22M | 0.00% | −16,827−4.6% | Reduced |
| Northern Trust Corp | 349,658 | $1.23M | 0.00% | +4,094+1.2% | Added |
| UBS Group AG | 376,982 | $1.33M | 0.00% | +65,483+21.0% | Added |
| Dimensional Fund Advisors LP | 443,118 | $1.56M | 0.00% | +53,652+13.8% | Added |
| Pier Capital, LLC | 492,368 | $1.73M | 0.29% | +492,368 | New |
| Topline Capital Management, LLC | 563,135 | $1.98M | 0.33% | +563,135 | New |
| Tikvah Management LLC | 571,619 | $2.01M | 0.62% | 00.0% | Unchanged |
| Vanguard Portfolio Management LLC | 576,600 | $2.03M | 0.00% | +576,600 | New |
| Morgan Stanley | 607,856 | $2.14M | 0.00% | −215,142−26.1% | Reduced |
| Williams Jones Wealth Management, LLC. | 613,439 | $2.16M | 0.03% | −25,500−4.0% | Reduced |
| Marshall Wace, LLP | 622,380 | $2.19M | 0.00% | +467,211+301.1% | Added |
| Russell Investments Group, Ltd. | 641,981 | $2.26M | 0.00% | +385,841+150.6% | Added |
| Envestnet Asset Management Inc | 682,711 | $2.40M | 0.00% | +430,500+170.7% | Added |
| Millennium Management LLC | 689,167 | $2.43M | 0.00% | +286,536+71.2% | Added |
| Empire Financial Management Company, LLC | 736,068 | $2.59M | 0.59% | +118,238+19.1% | Added |
| State Street Corp | 898,277 | $3.16M | 0.00% | +4,876+0.5% | Added |
| Trium Capital LLP | 994,217 | $3.50M | 2.54% | +176,766+21.6% | Added |
| Geode Capital Management, LLC | 994,764 | $3.50M | 0.00% | −79,203−7.4% | Reduced |
| First Eagle Investment Management, LLC | 1,300,087 | $4.58M | 0.01% | +768,660+144.6% | Added |
| Levin Capital Strategies, L.P. | 1,464,052 | $5.15M | 0.39% | +1,464,052 | New |
| Vanguard Capital Management LLC | 1,784,613 | $6.28M | 0.00% | +1,784,613 | New |
| Invenomic Capital Management LP | 1,932,386 | $6.80M | 0.31% | +427,178+28.4% | Added |
| William Blair Investment Management, LLC | 2,083,699 | $7.33M | 0.02% | +37,250+1.8% | Added |
| Blue Water Life Science Advisors, LLC | 2,142,147 | $7.54M | 6.05% | +50,000+2.4% | Added |
| Portolan Capital Management, LLC | 2,945,823 | $10.4M | 0.55% | −1,579,730−34.9% | Reduced |
| BlackRock, Inc. | 3,277,595 | $11.5M | 0.00% | −98,315−2.9% | Reduced |
| Ameriprise Financial Inc | 3,542,374 | $12.5M | 0.00% | −1,453,699−29.1% | Reduced |
| Easterly Investment Partners LLC | 0 | $0 | 0.00% | −616,681−100.0% | Sold out |
| Standard Life Aberdeen plc | 0 | $0 | 0.00% | −104,039−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −86,890−100.0% | Sold out |
| Mount Lucas Management LP | 0 | $0 | 0.00% | −56,500−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −55,150−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −45,627−100.0% | Sold out |
| Numerai GP LLC | 0 | $0 | 0.00% | −29,762−100.0% | Sold out |
| Paragon Associates & Paragon Associates II Joint Venture | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −24,080−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −21,707−100.0% | Sold out |
| JustInvest LLC | 0 | $0 | 0.00% | −13,172−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −12,677−100.0% | Sold out |
| DekaBank Deutsche Girozentrale | 0 | $0 | 0.00% | −4,566−100.0% | Sold out |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −11,238−100.0% | Sold out |
| Farther Finance Advisors, LLC | 0 | $0 | 0.00% | −4,078−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −1,387−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −961−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −763−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −336−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −154−100.0% | Sold out |
| Concord Wealth Partners | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Rialto Wealth Management, LLC | 0 | $0 | 0.00% | −96−100.0% | Sold out |
| Basecamp Wealth Advisors LLC | 0 | $0 | 0.00% | −87−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Clarius Group, LLC | – | – | – | – | Not filed |