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

Insider buying vs selling

Have Quanterix Corp insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Vandana SriramChief Financial Officer2026-05-15154$2.75
$423.50Sell
Michael Francis MillerChief Technology Officer2026-05-1525$2.75
$68.75Sell
Michael Francis MillerChief Technology Officer2026-05-1541$2.75
$112.75Sell
Michael Francis MillerChief Technology Officer2026-05-1541$2.75
$112.75Sell
Michael Francis MillerChief Technology Officer2026-05-15111$2.75
$305.25Sell
Michael Francis MillerChief Technology Officer2026-05-15249$2.75
$684.75Sell
Vandana SriramChief Financial Officer2026-05-1579$2.75
$217.25Sell
Vandana SriramChief Financial Officer2026-05-15315$2.75
$866.25Sell
Michael Francis MillerChief Operating Officer2026-04-3039$3.13
$122.07Sell
Michael Francis MillerChief Operating Officer2026-04-15249$3.60
$896.40Sell

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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 Crandell13.78%6,492,922$16.36MInsider
Ameriprise Financial Inc7.52%3,542,374$8.93MInstitution
Blackrock Inc6.96%3,277,595$8.26MInstitution
Portolan Capital Management LLC6.25%2,945,823$7.42MInstitution
Blue Water Life Science Advisors LP4.55%2,142,147$5.40MInstitution
Bain Capital Venture Investors LLC4.53%2,136,085$5.38MInsider
William Blair Investment Management LLC4.42%2,083,699$5.25MInstitution
Biomerieux4.36%2,055,632$5.18MInsider
Flagship Ventures Fund 2004 L P4.31%2,030,495$5.12MInsider
Invenomic Capital Management LP4.10%1,932,386$4.87MInstitution

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QTRX vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
QTRX65.22%34.78%Net BuyingNet Selling
STEX22.63%20.85%Net BuyingNet Selling
NNOX25.72%0.58%Net Buying
MXCT60.85%12.23%Net BuyingNet Selling
HSDT17.75%82.25%

Quanterix Stock Ownership FAQ

Who owns Quanterix?

Quanterix (NASDAQ: QTRX) is owned by 77.36% institutional shareholders, 41.26% Quanterix insiders, and 0.00% retail investors. Keith Crandell is the largest individual Quanterix shareholder, owning 6.49M shares representing 13.78% of the company. Keith Crandell's Quanterix shares are currently valued at $17.14M.

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