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QUANTERIX (QTRX)
NASDAQ
$3.40+$0.18 (+5.59%)
Price as of Jun 23, 2026 7:43 PM EDT- $164.4MMarket Cap
- -45.42%1-Year Change
- Medical DevicesIndustry
QUANTERIX (QTRX)
$3.40+$0.18 (+5.59%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
AMERIPRISE FINANCIAL INC | 7.52% | 3.5M | -1.5M (-41.04%) | Mar 31, 2026 |
BLACKROCK, INC. | 6.96% | 3.3M | -98,315 (-3.00%) | Mar 31, 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 |
PORTOLAN CAPITAL MANAGEMENT, LLC | 6.25% | 2.9M | -1.6M (-53.63%) | Mar 31, 2026 |
VANGUARD GROUP INC | 5.68% | 2.7M | +30,318 (+1.13%) | Dec 31, 2025 |
BLUE WATER LIFE SCIENCE ADVISORS, LP | 4.55% | 2.1M | +50,000 (+2.33%) | 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 | -108,680 (-5.92%) | Mar 31, 2026 |
AB CAP FUND, INC. | 3.71% | 1.7M | 0 (0.00%) | Jan 31, 2026 |
VANGUARD INDEX FUNDS | 3.69% | 1.7M | +9,307 (+0.54%) | Mar 31, 2026 |
Fidelity Rutland Square Trust II | 3.41% | 1.6M | -446,833 (-27.80%) | Feb 28, 2026 |
FIRST EAGLE FUNDS | 1.54% | 723,648 | +723,648 (+100.00%) | Jan 31, 2026 |
WILLIAM BLAIR FUNDS | 1.53% | 719,776 | +32,600 (+4.53%) | Mar 31, 2026 |
Current Ownership Distribution
- Institutions598.4M (75.04%)
- Mutual Funds187.5M (23.52%)
- Insiders11.5M (1.44%)
- Other0 (0.00%)
Insider Transactions
- 1.44% (11.5M)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 |
|---|---|---|---|---|---|---|
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 |
Miller Michael Francis Chief Technology Officer | In Kind | Jun 15, 2026 | $77.50 | 25 | $3.10 | 33,851 |
Miller Michael Francis Chief Technology Officer | Exempt | Jun 15, 2026 | $0.00 | 136 | $0.00 | 33,987 |
Miller Michael Francis Chief Technology Officer | In Kind | Jun 15, 2026 | $127.10 | 41 | $3.10 | 33,946 |
Miller Michael Francis Chief Technology Officer | Exempt | Jun 15, 2026 | $0.00 | 135 | $0.00 | 34,081 |
Miller Michael Francis Chief Technology Officer | In Kind | Jun 15, 2026 | $127.10 | 41 | $3.10 | 34,040 |
Miller Michael Francis Chief Technology Officer | Exempt | Jun 15, 2026 | $0.00 | 372 | $0.00 | 34,412 |
Miller Michael Francis Chief Technology Officer | In Kind | Jun 15, 2026 | $344.10 | 111 | $3.10 | 34,301 |
Miller Michael Francis Chief Technology Officer | Exempt | Jun 15, 2026 | $0.00 | 834 | $0.00 | 35,135 |
Miller Michael Francis Chief Technology Officer | In Kind | Jun 15, 2026 | $771.90 | 249 | $3.10 | 34,886 |
Meadows Benjamin Chief Commercial Officer | Buy | May 12, 2026 | $9,695.00 | 3,500 | $2.77 | 3,500 |
DONNELLY WILLIAM P Executive Chair | Award | Apr 01, 2026 | $0.00 | 6,178 | $0.00 | 154,127 |
Miller Michael Francis Chief Operating Officer | Exempt | Mar 31, 2026 | $0.00 | 99 | $0.00 | 0 |
Miller Michael Francis Chief Operating Officer | Exempt | Mar 31, 2026 | $0.00 | 130 | $0.00 | 679 |
Miller Michael Francis Chief Operating Officer | Exempt | Mar 31, 2026 | $0.00 | 99 | $0.00 | 31,370 |
Miller Michael Francis Chief Operating Officer | In Kind | Mar 31, 2026 | $105.60 | 30 | $3.52 | 31,340 |
Miller Michael Francis Chief Operating Officer | Exempt | Mar 31, 2026 | $0.00 | 130 | $0.00 | 31,470 |
Miller Michael Francis Chief Operating Officer | In Kind | Mar 31, 2026 | $137.28 | 39 | $3.52 | 31,431 |
Sriram Vandana Chief Financial Officer | Exempt | Mar 15, 2026 | $0.00 | 263 | $0.00 | 4,471 |
Sriram Vandana Chief Financial Officer | Exempt | Mar 15, 2026 | $0.00 | 514 | $0.00 | 11,825 |
Sriram Vandana Chief Financial Officer | Exempt | Mar 15, 2026 | $0.00 | 1,056 | $0.00 | 36,978 |
Sriram Vandana Chief Financial Officer | Exempt | Mar 15, 2026 | $0.00 | 263 | $0.00 | 26,503 |
Sriram Vandana Chief Financial Officer | In Kind | Mar 15, 2026 | $438.96 | 93 | $4.72 | 26,410 |
Sriram Vandana Chief Financial Officer | Exempt | Mar 15, 2026 | $0.00 | 514 | $0.00 | 26,924 |
Sriram Vandana Chief Financial Officer | In Kind | Mar 15, 2026 | $854.32 | 181 | $4.72 | 26,743 |