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NASDAQ: QTRX
Quanterix Corp Stock Ownership - Who owns Quanterix?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Quanterix Corp insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Michael Francis MillerChief Operating Officer2026-03-3139$3.52
$137.28Sell
Michael Francis MillerChief Operating Officer2026-03-3130$3.52
$105.60Sell
Vandana SriramChief Financial Officer2026-03-15371$4.72
$1.75kSell
Vandana SriramChief Financial Officer2026-03-15181$4.72
$854.32Sell
Michael Francis MillerChief Operating Officer2026-03-1548$4.72
$226.56Sell
Michael Francis MillerChief Operating Officer2026-03-1548$4.72
$226.56Sell
Michael Francis MillerChief Operating Officer2026-03-15131$4.72
$618.32Sell
Michael Francis MillerChief Operating Officer2026-03-15293$4.72
$1.38kSell
Vandana SriramChief Financial Officer2026-03-1593$4.72
$438.96Sell
Michael Francis MillerChief Operating Officer2026-03-1529$4.72
$136.88Sell

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Net Insider Buy/Sell (L12M) Ownership

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QTRX Shareholders

What type of owners hold Quanterix Corp stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Keith Crandell13.83%6,492,922$24.61MInsider
Ameriprise Financial Inc10.64%4,996,073$18.94MInstitution
Portolan Capital Management LLC9.64%4,525,553$17.15MInstitution
Blackrock Inc7.19%3,375,910$12.79MInstitution
Vanguard Group Inc5.70%2,677,833$10.15MInstitution
Bain Capital Venture Investors LLC4.55%2,136,085$8.10MInsider
Blue Water Life Science Advisors LP4.46%2,092,147$7.93MInstitution
Biomerieux4.38%2,055,632$7.79MInsider
William Blair Investment Management LLC4.36%2,046,449$7.76MInstitution
Flagship Ventures Fund 2004 L P4.33%2,030,495$7.70MInsider

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QTRX vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
QTRX64.33%35.67%Net BuyingNet Selling
INGN68.83%31.17%Net SellingNet Selling
SGHT36.19%57.51%Net BuyingNet Selling
ELMD34.45%65.55%Net Selling
NNOX24.88%0.47%Net Buying
View Top Medical Device Stocks

Quanterix Stock Ownership FAQ

Who owns Quanterix?

Quanterix (NASDAQ: QTRX) is owned by 74.80% institutional shareholders, 41.48% Quanterix insiders, and 0.00% retail investors. Keith Crandell is the largest individual Quanterix shareholder, owning 6.49M shares representing 13.83% of the company. Keith Crandell's Quanterix shares are currently valued at $24.61M.

If you're new to stock investing, here's how to buy Quanterix stock.
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