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QUANTERIX (QTRX)
NASDAQ
$2.97-$0.02 (-0.74%)
Price as of Aug 21, 2026 7:59 PM EDT- $141.4MMarket Cap
- -38.10%1-Year Change
- Medical DevicesIndustry
QUANTERIX (QTRX)
$2.97-$0.02 (-0.74%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BLACKROCK, INC. | 7.72% | 3.6M | +357,816 (+9.84%) | Jun 30, 2026 |
BLUE WATER LIFE SCIENCE ADVISORS, LP | 7.38% | 3.5M | +1.3M (+38.34%) | Jun 30, 2026 |
BLACKROCK FUNDING, INC. /DE | 6.72% | 3.2M | -46,695 (-1.48%) | Dec 31, 2024 |
BLACKROCK INC. | 6.66% | 3.1M | +14,954 (+0.48%) | Jun 30, 2024 |
FIRST EAGLE INVESTMENT MANAGEMENT, LLC | 5.84% | 2.8M | +1.5M (+52.78%) | Jun 30, 2026 |
VANGUARD GROUP INC | 5.68% | 2.7M | +30,318 (+1.13%) | Dec 31, 2025 |
INVENOMIC CAPITAL MANAGEMENT LP | 4.10% | 1.9M | +427,178 (+22.11%) | Mar 31, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
DELAWARE GROUP EQUITY FUNDS IV | 4.82% | 2.3M | 0 (0.00%) | Mar 31, 2026 |
iSHARES TRUST | 3.90% | 1.8M | 0 (0.00%) | May 31, 2026 |
AB CAP FUND, INC. | 3.71% | 1.7M | 0 (0.00%) | Apr 30, 2026 |
VANGUARD INDEX FUNDS | 3.69% | 1.7M | +9,307 (+0.54%) | Mar 31, 2026 |
Fidelity Rutland Square Trust II | 3.61% | 1.7M | +93,582 (+5.50%) | May 31, 2026 |
FIRST EAGLE FUNDS | 2.95% | 1.4M | +664,849 (+47.88%) | Apr 30, 2026 |
NORTHERN LIGHTS FUND TRUST II | 1.64% | 771,542 | +142,405 (+18.46%) | Apr 30, 2026 |
Current Ownership Distribution
- Institutions629.9M (74.33%)
- Mutual Funds206.0M (24.31%)
- Insiders11.6M (1.37%)
- Other0 (0.00%)
Insider Transactions
- 1.37% (11.6M)Current InsiderOwnership (%, shares)
- 1Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 0Number of InsiderSelling (last 12 months)
- $0.00Amount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
DONNELLY WILLIAM P | Exempt | Aug 17, 2026 | $0.00 | 2,802 | $0.00 | 0 |
DONNELLY WILLIAM P | Exempt | Aug 17, 2026 | $0.00 | 2,802 | $0.00 | 162,401 |
Miller Michael Francis Chief Technology Officer | Exempt | Aug 15, 2026 | $0.00 | 81 | $0.00 | 517 |
Miller Michael Francis Chief Technology Officer | Exempt | Aug 15, 2026 | $0.00 | 136 | $0.00 | 981 |
Miller Michael Francis Chief Technology Officer | Exempt | Aug 15, 2026 | $0.00 | 135 | $0.00 | 2,441 |
Miller Michael Francis Chief Technology Officer | Exempt | Aug 15, 2026 | $0.00 | 372 | $0.00 | 7,829 |
Miller Michael Francis Chief Technology Officer | Exempt | Aug 15, 2026 | $0.00 | 834 | $0.00 | 25,023 |
Miller Michael Francis Chief Technology Officer | Exempt | Aug 15, 2026 | $0.00 | 81 | $0.00 | 36,240 |
Miller Michael Francis Chief Technology Officer | In Kind | Aug 15, 2026 | $64.75 | 25 | $2.59 | 36,215 |
Miller Michael Francis Chief Technology Officer | Exempt | Aug 15, 2026 | $0.00 | 136 | $0.00 | 36,351 |
Miller Michael Francis Chief Technology Officer | In Kind | Aug 15, 2026 | $106.19 | 41 | $2.59 | 36,310 |
Miller Michael Francis Chief Technology Officer | Exempt | Aug 15, 2026 | $0.00 | 135 | $0.00 | 36,445 |
Miller Michael Francis Chief Technology Officer | In Kind | Aug 15, 2026 | $106.19 | 41 | $2.59 | 36,404 |
Miller Michael Francis Chief Technology Officer | Exempt | Aug 15, 2026 | $0.00 | 372 | $0.00 | 36,776 |
Miller Michael Francis Chief Technology Officer | In Kind | Aug 15, 2026 | $287.49 | 111 | $2.59 | 36,665 |
Miller Michael Francis Chief Technology Officer | Exempt | Aug 15, 2026 | $0.00 | 834 | $0.00 | 37,499 |
Miller Michael Francis Chief Technology Officer | In Kind | Aug 15, 2026 | $644.91 | 249 | $2.59 | 37,250 |
Miller Michael Francis Chief Technology Officer | Exempt | Jul 31, 2026 | $0.00 | 130 | $0.00 | 159 |
Miller Michael Francis Chief Technology Officer | Exempt | Jul 31, 2026 | $0.00 | 130 | $0.00 | 36,198 |
Miller Michael Francis Chief Technology Officer | In Kind | Jul 31, 2026 | $135.72 | 39 | $3.48 | 36,159 |
Mendel Scott | Exempt | Jul 08, 2026 | $0.00 | 8,073 | $0.00 | 16,391 |
Mendel Scott | Exempt | Jul 08, 2026 | $0.00 | 8,073 | $0.00 | 24,056 |
DONNELLY WILLIAM P | Award | Jul 01, 2026 | $23,748.48 | 5,472 | $4.34 | 160,305 |
Mendel Scott | Award | Jul 01, 2026 | $14,999.04 | 3,456 | $4.34 | 16,837 |
Miller Michael Francis Chief Technology Officer | Exempt | Jun 15, 2026 | $0.00 | 81 | $0.00 | 679 |
Miller Michael Francis Chief Technology Officer | Exempt | Jun 15, 2026 | $0.00 | 136 | $0.00 | 1,253 |
Miller Michael Francis Chief Technology Officer | Exempt | Jun 15, 2026 | $0.00 | 135 | $0.00 | 2,711 |
Miller Michael Francis Chief Technology Officer | Exempt | Jun 15, 2026 | $0.00 | 372 | $0.00 | 8,573 |
Miller Michael Francis Chief Technology Officer | Exempt | Jun 15, 2026 | $0.00 | 834 | $0.00 | 26,691 |
Miller Michael Francis Chief Technology Officer | Exempt | Jun 15, 2026 | $0.00 | 81 | $0.00 | 33,876 |