QTRX — Quanterix Corp
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2017-12-07.
Performance
Technicals
Others in Healthcare
Measured signals that fired on QTRX
| date | signal | measured base rate |
|---|---|---|
| 2026-08-10 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-05-19 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-04-20 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-19 | Elliott Jeffrey Thomas Director | Option exercise | 4.0K | — | — |
| 2026-08-17 | DONNELLY WILLIAM P Director | Option exercise | 2.8K | — | — |
| 2026-08-15 | Miller Michael Francis Chief Technology Officer | Shares withheld for tax | 249 | 2.59 | 645 |
| 2026-08-15 | Miller Michael Francis Chief Technology Officer | Shares withheld for tax | 111 | 2.59 | 287 |
| 2026-08-15 | Miller Michael Francis Chief Technology Officer | Shares withheld for tax | 41 | 2.59 | 106 |
| 2026-08-15 | Miller Michael Francis Chief Technology Officer | Shares withheld for tax | 41 | 2.59 | 106 |
| 2026-08-15 | Miller Michael Francis Chief Technology Officer | Shares withheld for tax | 25 | 2.59 | 65 |
| 2026-08-15 | Miller Michael Francis Chief Technology Officer | Option exercise | 135 | — | — |
| 2026-08-15 | Miller Michael Francis Chief Technology Officer | Option exercise | 372 | — | — |
| 2026-08-15 | Miller Michael Francis Chief Technology Officer | Option exercise | 136 | — | — |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| AMERIPRISE FINANCIAL INC | 12.5M | 3.5M |
| BlackRock, Inc. | 11.5M | 3.3M |
| Portolan Capital Management, LLC | 10.4M | 2.9M |
| Blue Water Life Science Advisors, LP | 7.5M | 2.1M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 7.3M | 2.1M |
| Invenomic Capital Management LP | 6.8M | 1.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.3M | 1.8M |
| LEVIN CAPITAL STRATEGIES, L.P. | 5.2M | 1.5M |
| First Eagle Investment Management, LLC | 4.6M | 1.3M |
| GEODE CAPITAL MANAGEMENT, LLC | 3.5M | 994.8K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Quanterix (QTRX) Q2 2026 Earnings Call Transcript · 2026-08-17
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