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Quanterix Ownership | Who Owns Quanterix?

OverviewForecastRevenueFinancialsChartTranscripts

Quanterix Ownership Summary

Quanterix is owned by 2.32% institutional investors, 6.33% insiders, and 91.35% retail investors. Ameriprise financial is the largest institutional shareholder, holding 8.34% of QTRX shares. CT (Lux) American Smaller Com 9U USD is the top mutual fund, with 4.72% of its assets in Quanterix shares.

QTRX Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockQuanterix2.32%6.33%91.35%
SectorHealthcare Stocks 279.19%10.62%-189.81%
IndustryMedical Device Stocks32.77%10.51%56.72%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Ameriprise financial3.21M8.34%$34.08M
Blackrock funding, inc. /de3.16M8.23%$33.64M
Blackrock3.14M8.23%$41.45M
Portolan capital management2.59M6.73%$27.51M
Alliancebernstein2.44M6.35%$25.94M
Vanguard group2.22M5.77%$23.57M
William blair investment management1.06M2.76%$11.29M
Easterly investment partners955.00K2.48%$10.15M
Ubs group934.55K2.43%$9.93M
Invenomic capital management lp902.04K2.33%$5.87M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Blue water life science advisors, lp372.18K2.40%$2.42M
Portolan capital management2.59M1.85%$27.51M
Tikvah management571.62K1.66%$6.08M
Ashford capital management771.30K1.38%$10.19M
Pier capital679.68K1.03%$7.22M
Easterly investment partners955.00K0.80%$10.15M
Topline capital management386.04K0.58%$2.51M
Kent lake capital75.00K0.45%$990.75K
Invenomic capital management lp902.04K0.30%$5.87M
Marathon capital management74.75K0.20%$794.59K

Top Buyers

HolderShares% AssetsChange
Ameriprise financial3.21M0.01%1.69M
William blair investment management1.06M0.03%1.06M
Ubs group934.55K0.00%913.39K
Invenomic capital management lp902.04K0.30%902.04K
Topline capital management386.04K0.58%386.04K

Top Sellers

HolderShares% AssetsChange
Millennium management55.71K0.00%-2.13M
Lord, abbett---1.76M
Alliancebernstein2.44M0.01%-825.80K
Eventide asset management---615.00K
Granahan investment management---536.42K

New Positions

HolderShares% AssetsChangeValue
William blair investment management1.06M0.03%1.06M$11.29M
Invenomic capital management lp902.04K0.30%902.04K$5.87M
Topline capital management386.04K0.58%386.04K$2.51M
Cubist systematic strategies287.23K0.01%287.23K$1.87M
Graypoint65.00K0.04%65.00K$690.95K

Sold Out

HolderChange
Eversource wealth advisors-7.00
True wealth design-12.00
Manchester capital management-23.00
Innealta capital-26.00
Allworth financial lp-27.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Mar 31, 20255-96.82%897,525-97.43%20.03%5-93.98%--100.00%
Dec 31, 20241563.31%34,445,4043.64%891.20%8320.29%43-17.31%
Sep 30, 2024149-4.49%33,225,4252.54%861.20%67-14.10%528.33%
Jun 30, 2024155-6.63%32,401,9960.36%841.17%78-1.27%47-16.07%
Mar 31, 2024166-6.21%32,285,2032.15%851.21%79-8.14%56-3.45%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
CT (Lux) American Smaller Com 9U USD1.83M4.72%49.48K
Strategic Advisers U.S. Total Stock1.75M4.50%107.08K
Strategic Advisers U.S. Total Stock{mg}1.45M3.79%91.44K
Strategic Advisers Small-Mid Cap1.30M3.39%283.56K
CT American Smaller Coms(US) InstAccGBP1.22M3.15%8.57K
Vanguard Total Stock Mkt Idx Inv1.15M2.99%-
Vanguard US Total Market Shares ETF1.15M2.96%-
AB Small Cap Growth A1.26M2.53%-30.56K
iShares Russell 2000 ETF960.20K2.47%471.00
Eventide Healthcare & Life Sciences I615.00K1.59%615.00K

Recent Insider Transactions

DateNameRoleActivityValue
Jun 09, 2025Toloue Masoud President & CEOBuy$248.72K
Jun 06, 2025WALT DAVID R-Buy$716.58K
Jun 09, 2025WALT DAVID R-Buy$417.22K
Jun 06, 2025DONNELLY WILLIAM P-Buy$506.35K
Aug 20, 2024WALT DAVID R-Buy$624.63K

Insider Transactions Trends

DateBuySell
2025 Q24-
2025 Q1--
2024 Q4--
2024 Q32-
2024 Q2-2

QTRX Ownership FAQ

Who Owns Quanterix?

Quanterix shareholders are primarily institutional investors at 2.32%, followed by 6.33% insiders and 91.35% retail investors. The average institutional ownership in Quanterix's industry, Medical Device Stocks, is 32.77%, which Quanterix falls below.

Who owns the most shares of Quanterix?

Quanterix’s largest shareholders are Ameriprise financial (3.21M shares, 8.34%), Blackrock funding, inc. /de (3.16M shares, 8.23%), and Blackrock (3.14M shares, 8.23%). Together, they hold 24.80% of Quanterix’s total shares outstanding.

Does Blackrock own Quanterix?

Yes, BlackRock owns 8.23% of Quanterix, totaling 3.14M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 41.45M$. In the last quarter, BlackRock increased its holdings by 14.95K shares, a 0.48% change.

Who is Quanterix’s biggest shareholder by percentage of total assets invested?

Blue water life science advisors, lp is Quanterix’s biggest shareholder by percentage of total assets invested, with 2.40% of its assets in 372.18K Quanterix shares, valued at 2.42M$.

Who is the top mutual fund holder of Quanterix shares?

CT (Lux) American Smaller Com 9U USD is the top mutual fund holder of Quanterix shares, with 4.72% of its total shares outstanding invested in 1.83M Quanterix shares.

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