Q3 2025 13F Holders as of 9/30/2025
-
Type / Class
-
Equity / Common Stock, par value $0.001
-
Shares outstanding
-
46.4M
-
Number of holders
-
126
-
Total 13F shares, excl. options
-
35.7M
-
Shares change
-
+910K
-
Total reported value, excl. options
-
$194M
-
Value change
-
+$2.75M
-
Put/Call ratio
-
1.3
-
Number of buys
-
64
-
Number of sells
-
-63
-
Price
-
$5.43
Significant Holders of Quanterix Corp - Common Stock, par value $0.001 (QTRX) as of Q3 2025
155 filings reported holding QTRX - Quanterix Corp - Common Stock, par value $0.001 as of Q3 2025.
Quanterix Corp - Common Stock, par value $0.001 (QTRX) has 126 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC).
These institutions hold a total of 35.7M shares
of 46.4M outstanding shares and own 76.9% of the company stock.
Largest 10 shareholders include Portolan Capital Management, LLC (4.26M shares), AMERIPRISE FINANCIAL INC (4.24M shares), BlackRock, Inc. (3.11M shares), VANGUARD GROUP INC (2.65M shares), Invenomic Capital Management LP (1.39M shares), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (1.32M shares), EASTERLY INVESTMENT PARTNERS LLC (1.25M shares), MILLENNIUM MANAGEMENT LLC (1.21M shares), GEODE CAPITAL MANAGEMENT, LLC (1.01M shares), and Kent Lake PR LLC (1M shares).
This table shows the top 126 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.