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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
Masoud TolouePresident CEO2025-12-151,242$7.41
$9.20kSell
Vandana SriramChief Financial Officer2025-12-15229$7.41
$1.70kSell
Masoud TolouePresident CEO2025-11-30254$7.26
$1.84kSell
Vandana SriramChief Financial Officer2025-11-15229$5.78
$1.32kSell
Masoud TolouePresident CEO2025-11-151,242$5.74
$7.13kSell
Masoud TolouePresident CEO2025-10-31254$5.34
$1.36kSell
Masoud TolouePresident CEO2025-10-151,242$5.78
$7.18kSell
Vandana SriramChief Financial Officer2025-10-15229$5.78
$1.32kSell
William P. DonnellyDirector2025-10-015,076$5.54
$28.12kBuy
Goldman Myla LaiDirector2025-10-012,084$5.54
$11.55kBuy

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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 Crandell13.90%6,492,922$44.15MInsider
Portolan Capital Management LLC9.12%4,259,851$28.97MInstitution
Ameriprise Financial Inc9.08%4,243,512$28.86MInstitution
Blackrock Inc6.66%3,112,980$21.17MInstitution
Vanguard Group Inc5.67%2,647,515$18.00MInstitution
Bain Capital Venture Investors LLC4.57%2,136,085$14.53MInsider
Biomerieux4.40%2,055,632$13.98MInsider
Flagship Ventures Fund 2004 L P4.35%2,030,495$13.81MInsider
David R. Walt4.01%1,871,675$12.73MInsider
Invenomic Capital Management LP2.98%1,393,005$9.47MInstitution

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QTRX vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
QTRX64.97%35.03%Net BuyingNet Buying
SI35.52%57.57%Net BuyingNet Buying
BWAY14.34%0.00%
VMD64.36%13.52%Net Selling
SNWV39.41%26.48%Net SellingNet Selling
View Top Medical Device Stocks

Quanterix Stock Ownership FAQ

Who owns Quanterix?

Quanterix (NASDAQ: QTRX) is owned by 76.37% institutional shareholders, 41.17% Quanterix insiders, and 0.00% retail investors. Keith Crandell is the largest individual Quanterix shareholder, owning 6.49M shares representing 13.90% of the company. Keith Crandell's Quanterix shares are currently valued at $42.79M.

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