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

Insider buying vs selling

Have Quanterix Corp insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Masoud TolouePresident CEO2025-08-151,242$4.57
$5.68kSell
Vandana SriramChief Financial Officer2025-08-15229$4.57
$1.05kSell
Masoud TolouePresident CEO2025-07-31254$5.94
$1.51kSell
Masoud TolouePresident CEO2025-07-151,242$5.49
$6.82kSell
Vandana SriramChief Financial Officer2025-07-15229$5.49
$1.26kSell
David R. WaltDirector2025-07-012,148$6.69
$14.37kBuy
William P. DonnellyDirector2025-07-014,204$6.69
$28.12kBuy
Paul M. MeisterDirector2025-07-012,242$6.69
$15.00kBuy
Sarah E. HlavinkaDirector2025-07-012,615$6.69
$17.49kBuy
Masoud TolouePresident CEO2025-06-30254$6.65
$1.69kSell

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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 Crandell16.72%6,492,922$32.14MInsider
Ameriprise Financial Inc10.91%4,236,877$20.97MInstitution
Portolan Capital Management LLC9.36%3,633,622$17.99MInstitution
Blackrock Inc7.53%2,924,699$14.48MInstitution
Vanguard Group Inc6.51%2,528,950$12.52MInstitution
Kent Lake Pr LLC5.93%2,301,000$11.39MInstitution
Bain Capital Venture Investors LLC5.50%2,136,085$10.57MInsider
Biomerieux5.29%2,055,632$10.18MInsider
Flagship Ventures Fund 2004 L P5.23%2,030,495$10.05MInsider
David R. Walt4.81%1,869,081$9.25MInsider

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QTRX vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
QTRX64.39%35.61%Net BuyingNet Buying
CVRX40.41%59.59%Net Buying
INGN70.16%29.84%Net Selling
CV0.00%3.96%
SGHT40.80%58.51%Net BuyingNet Buying

Quanterix Stock Ownership FAQ

Who owns Quanterix?

Quanterix (NASDAQ: QTRX) is owned by 89.53% institutional shareholders, 49.50% Quanterix insiders, and 0.00% retail investors. Keith Crandell is the largest individual Quanterix shareholder, owning 6.49M shares representing 16.72% of the company. Keith Crandell's Quanterix shares are currently valued at $32.66M.

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