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QUANTERIX (QTRX)
NASDAQ
$3.47-$0.06 (-1.84%)
Price as of Jun 03, 2026 5:57 PM EDT- $144.1MMarket Cap
- -36.74%1-Year Change
- Medical DevicesIndustry
QUANTERIX (QTRX)
$3.47-$0.06 (-1.84%)
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 (75.07%)
- Mutual Funds187.3M (23.49%)
- Insiders11.5M (1.44%)
- Other0 (0.00%)
Insider Transactions
- 1.44% (11.5M)Current InsiderOwnership (%, shares)
- 3Number of InsiderBuying (last 12 months)
- $41.0MAmount 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 | May 31, 2026 | $0.00 | 130 | $0.00 | 419 |
Miller Michael Francis Chief Technology Officer | Exempt | May 31, 2026 | $0.00 | 130 | $0.00 | 33,834 |
Miller Michael Francis Chief Technology Officer | In Kind | May 31, 2026 | $119.34 | 39 | $3.06 | 33,795 |
Sriram Vandana Chief Financial Officer | Exempt | May 15, 2026 | $0.00 | 263 | $0.00 | 3,945 |
Miller Michael Francis Chief Technology Officer | Exempt | May 15, 2026 | $0.00 | 81 | $0.00 | 760 |
Sriram Vandana Chief Financial Officer | Exempt | May 15, 2026 | $0.00 | 514 | $0.00 | 10,797 |
Miller Michael Francis Chief Technology Officer | Exempt | May 15, 2026 | $0.00 | 136 | $0.00 | 1,389 |
Sriram Vandana Chief Financial Officer | Exempt | May 15, 2026 | $0.00 | 1,056 | $0.00 | 34,866 |
Miller Michael Francis Chief Technology Officer | Exempt | May 15, 2026 | $0.00 | 135 | $0.00 | 2,846 |
Sriram Vandana Chief Financial Officer | Exempt | May 15, 2026 | $0.00 | 263 | $0.00 | 28,976 |
Miller Michael Francis Chief Technology Officer | Exempt | May 15, 2026 | $0.00 | 372 | $0.00 | 8,945 |
Sriram Vandana Chief Financial Officer | In Kind | May 15, 2026 | $217.25 | 79 | $2.75 | 28,897 |
Miller Michael Francis Chief Technology Officer | Exempt | May 15, 2026 | $0.00 | 834 | $0.00 | 27,525 |
Sriram Vandana Chief Financial Officer | Exempt | May 15, 2026 | $0.00 | 514 | $0.00 | 29,411 |
Miller Michael Francis Chief Technology Officer | Exempt | May 15, 2026 | $0.00 | 81 | $0.00 | 32,694 |
Sriram Vandana Chief Financial Officer | In Kind | May 15, 2026 | $423.50 | 154 | $2.75 | 29,257 |
Miller Michael Francis Chief Technology Officer | In Kind | May 15, 2026 | $68.75 | 25 | $2.75 | 32,669 |
Sriram Vandana Chief Financial Officer | Exempt | May 15, 2026 | $0.00 | 1,056 | $0.00 | 30,313 |
Miller Michael Francis Chief Technology Officer | Exempt | May 15, 2026 | $0.00 | 136 | $0.00 | 32,805 |
Sriram Vandana Chief Financial Officer | In Kind | May 15, 2026 | $866.25 | 315 | $2.75 | 29,998 |
Miller Michael Francis Chief Technology Officer | In Kind | May 15, 2026 | $112.75 | 41 | $2.75 | 32,764 |
Miller Michael Francis Chief Technology Officer | Exempt | May 15, 2026 | $0.00 | 135 | $0.00 | 32,899 |
Miller Michael Francis Chief Technology Officer | In Kind | May 15, 2026 | $112.75 | 41 | $2.75 | 32,858 |
Miller Michael Francis Chief Technology Officer | Exempt | May 15, 2026 | $0.00 | 372 | $0.00 | 33,230 |
Miller Michael Francis Chief Technology Officer | In Kind | May 15, 2026 | $305.25 | 111 | $2.75 | 33,119 |
Miller Michael Francis Chief Technology Officer | Exempt | May 15, 2026 | $0.00 | 834 | $0.00 | 33,953 |
Miller Michael Francis Chief Technology Officer | In Kind | May 15, 2026 | $684.75 | 249 | $2.75 | 33,704 |
Miller Michael Francis Chief Operating Officer | Exempt | Apr 30, 2026 | $0.00 | 130 | $0.00 | 549 |
Miller Michael Francis Chief Operating Officer | Exempt | Apr 30, 2026 | $0.00 | 130 | $0.00 | 32,652 |
Miller Michael Francis Chief Operating Officer | In Kind | Apr 30, 2026 | $122.07 | 39 | $3.13 | 32,613 |