Quanterix Corp
QTRX- Exchange
- Nasdaq
- Industry
- Laboratory Analytical Instruments
- SEC CIK
- 0001503274
No open-market purchases or sales by Quanterix Corp insiders were filed in the last 90 days; 132 institutions reported holding it in 13F filings for Q2 2026, worth $127.1M in total; no superinvestor holds it.
Key figures
- Market capClose on Nov 12, 2026
- $135.8M
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +5 vs. previous quarter
- 132
- 13F valueReported value at the end of Q2 2026
- $127.1M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $138.9M
- +1.1% year over year
- Net income, FY2025
- -$107.2M
- No comparable prior period
- Free cash flow, FY2025
- -$79.8M
- No comparable prior period
- Revenue, Q3 FY2026
- $35.0M
- −13.1% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Net loss for FY2025: $107.2M (77.1% of revenue).
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 4.56M
- Shares sold short
- Change
- −115.4K
- −2.5% vs. previous
- Days to cover
- 10.74
- At average daily volume
Superinvestors holding QTRX, Q2 2026
Go to the superinvestors tabNo superinvestor reported holding QTRX at the end of Q2 2026.
Latest insider trades
See all insider tradesOpen-market purchases and sales by Quanterix Corp insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 (view filing)4:01 PM ET | Aug 12-13 | 2 days | Donnelly William PDirector | PPurchase | +99.4K | $2.88 | +$286.4K | New position99.4K after | 2 lots |
| Jun 12, 2026 (view filing) | May 12 | 31 daysLate | Meadows BenjaminChief Commercial Officer | PPurchase | +3.50K | $2.77 | +$9.70K | New position3.50K after | |
| Sep 17, 2025 (view filing) | Sep 12 | 5 daysLate | Sriram VandanaChief Financial Officer | PPurchase | +4.15K | $4.79 | +$19.9K | +5.0%87.2K after | |
| Jun 13, 2025 (view filing) | Jun 12-13 | 1 day | Walt David RDirector | PPurchase | +160.0K | $6.16 | +$985.6K | +9.4%1.87M after | 2 lots |
| Jun 10, 2025 (view filing) | Jun 9 | 1 day | Toloue MasoudPresident & CEO | PPurchase | +45.9K | $5.42 | +$248.8K | +9.7%518.9K after | |
| Jun 9, 2025 (view filing) | Jun 6-9 | 3 days | Walt David RDirector | PPurchase | +210.0K | $5.40 | +$1.13M | +14.0%1.71M after | 2 lots |
| Jun 9, 2025 (view filing) | Jun 6 | 3 days | Donnelly William PDirector | PPurchase | +93.1K | $5.44 | +$506.5K | +202.5%139.1K after | |
| Sep 17, 2024 (view filing) | Aug 20 | 28 daysLate | Walt David RDirector | PPurchase | +47.0K | $13.29 | +$624.6K | +3.3%1.49M after | |
| Aug 15, 2024 (view filing) | Aug 13 | 2 days | Toloue MasoudPresident & CEO | PPurchase | +19.0K | $10.90 | +$207.1K | +5.7%354.1K after | |
| May 14, 2024 (view filing) | May 14 | Same day | Olson Laurie JDirector | SSale | −1.50K | $16.98 | −$25.5K | −9.8%13.7K after | 10b5-1 |
Top 10 13F holders, Q2 2026
See all 132 holdersThe largest institutional positions in Quanterix Corp at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,635,411 | $15.7M | 0.00% | +357,816+10.9% | Added |
| Blue Water Life Science Advisors, LLC | 3,474,202 | $15.0M | 9.45% | +1,332,055+62.2% | Added |
| First Eagle Investment Management, LLC | 2,753,165 | $11.9M | 0.02% | +1,453,078+111.8% | Added |
| Portolan Capital Management, LLC | 1,899,308 | $8.21M | 0.31% | −1,046,515−35.5% | Reduced |
| Vanguard Capital Management LLC | 1,800,644 | $7.78M | 0.00% | +16,031+0.9% | Added |
| Lionhunter Capital Management, LLC | 1,500,427 | $6.48M | 2.92% | +1,500,427 | New |
| AQR Capital Management LLC | 1,343,005 | $5.80M | 0.00% | +1,258,873+1,496.3% | Added |
| Geode Capital Management, LLC | 1,131,377 | $4.89M | 0.00% | +136,613+13.7% | Added |
| Ameriprise Financial Inc | 987,424 | $4.27M | 0.00% | −2,554,950−72.1% | Reduced |
| Marshall Wace, LLP | 973,872 | $4.21M | 0.00% | +351,492+56.5% | Added |
Holders of 5% or more of QTRX
See all 3 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of Quanterix Corp.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Ameriprise Financial Inc | 13G/A | 7.50%3.54M shares | +5.40 ppfrom 2.10% | Feb 14, 20257 filings | May 15, 2026 | SEC |
| BlackRock, Inc. | 13G/A | 7.30%2.84M shares | – | Jul 17, 20251 filing | Jul 17, 2025 | SEC |
| Telegraph Hill Partners III, L.P. | 13G | 5.40%2.50M shares | New | Nov 19, 20251 filing | Nov 19, 2025 | SEC |