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 $138.9M in total; no superinvestor holds it.
Key figures
- Insider buysLast 90 days, $286.4K in total
- 1
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +5 vs. previous quarter
- 132
- 13F valueReported value at the end of Q2 2026
- $138.9M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding QTRX, Q2 2026
No superinvestor reported holding QTRX at the end of Q2 2026.
Latest insider trades
Open-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
The 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 |
|---|---|---|---|---|---|
| First Eagle Investment Management, LLC | 5,506,330 | $23.8M | 0.02% | +4,206,243+323.5% | Added |
| 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 |
| 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 |