Q2 2025 13F Holders as of 6/30/2025
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Type / Class
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Equity / Common Stock, $0.001 par value per share
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Shares outstanding
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38.8M
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Number of holders
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136
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Total 13F shares, excl. options
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34.7M
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Shares change
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-250K
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Total reported value, excl. options
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$231M
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Value change
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-$1.23M
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Number of buys
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70
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Number of sells
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-75
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Price
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$6.65
Significant Holders of Quanterix Corp - Common Stock, $0.001 par value per share (QTRX) as of Q2 2025
175 filings reported holding QTRX - Quanterix Corp - Common Stock, $0.001 par value per share as of Q2 2025.
Quanterix Corp - Common Stock, $0.001 par value per share (QTRX) has 136 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC).
These institutions hold a total of 34.7M shares
of 38.8M outstanding shares and own 89.41% of the company stock.
Largest 10 shareholders include AMERIPRISE FINANCIAL INC (4.24M shares), Portolan Capital Management, LLC (3.63M shares), BlackRock, Inc. (2.92M shares), VANGUARD GROUP INC (2.53M shares), Kent Lake PR LLC (2.3M shares), Invenomic Capital Management LP (1.14M shares), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (1.13M shares), EASTERLY INVESTMENT PARTNERS LLC (1.08M shares), Blue Water Life Science Advisors, LP (958K shares), and GEODE CAPITAL MANAGEMENT, LLC (887K shares).
This table shows the top 136 institutional shareholders of the company equity. This data is sourced directly from the SEC via 13F filings.
Investor |
Option |
Weight % |
Change % |
Value $ |
* Price $ |
Shares |
Share Change |
Activity |
Report Period |
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.