QTRX Institutional Ownership & Shareholders
QUANTERIX CORP (QTRX) is currently held by 123 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $120.24M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of QTRX tracked by InsiderSet, reporting ownership valued at approximately $15.70M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $10.22M, representing an estimated loss of -34.95% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 68% of the total disclosed QTRX value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Blue Water Life Science Advisors, Lp, First Eagle U.S. Value, and several other long-term asset managers with concentrated positions in QUANTERIX CORP (QTRX).
This page ranks the largest institutional QTRX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
123
Total Reported Value
$120.24M
Largest Holder
Blackrock, Inc.
Largest Position
$15.70M
Insider Transactions (90d)
36
Latest Filing Quarter
Q2 2026
New Institutional Positions
122
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 3,635,411 | $15,704,976 | $10,215,505 | -$5,489,471 | -34.95% | |
| Blue Water Life Science Advisors, Lp | 9.45% | 3,474,202 | $15,008,553 | $9,762,508 | -$5,246,045 | -34.95% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 2,753,165 | $11,893,673 | $7,736,394 | -$4,157,279 | -34.95% |
| Portolan Capital Management, Llc | 0.31% | 1,899,308 | $8,205,011 | $5,337,055 | -$2,867,956 | -34.95% | |
| Vanguard Capital Management Llc | 0.00% | 1,800,644 | $7,778,782 | $5,059,810 | -$2,718,972 | -34.95% | |
| Aqr Capital Management Llc | 0.00% | 1,343,005 | $5,801,782 | $3,773,844 | -$2,027,938 | -34.95% | |
| Geode Capital Management, Llc | 0.00% | 1,131,377 | $4,888,805 | $3,179,169 | -$1,709,636 | -34.97% | |
| Ameriprise Financial Inc | 0.00% | 987,424 | $4,265,671 | $2,774,661 | -$1,491,010 | -34.95% | |
| Marshall Wace, Llp | 0.00% | 973,872 | $4,207,125 | $2,736,580 | -$1,470,545 | -34.95% | |
| State Street Corp | 0.00% | 932,307 | $4,027,566 | $2,619,783 | -$1,407,783 | -34.95% | |
| Tikvah Management Llc | 0.75% | 571,555 | $2,469,118 | $1,606,070 | -$863,048 | -34.95% | |
| Vanguard Portfolio Management Llc | 0.00% | 489,566 | $2,114,925 | $1,375,680 | -$739,245 | -34.95% | |
| Jacobs Levy Equity Management, Inc | 0.01% | 487,600 | $2,106,432 | $1,370,156 | -$736,276 | -34.95% | |
| Morgan Stanley | 0.00% | 447,688 | $1,934,013 | $1,258,003 | -$676,010 | -34.95% | |
| Jane Street Group, Llc | 0.00% | 419,050 | $1,810,296 | $1,177,531 | -$632,766 | -34.95% | |
| Gsa Capital Partners Llp | 0.11% | 410,252 | $1,772,000 | $1,152,808 | -$619,192 | -34.94% | |
| Tudor Investment Corp Et Al | 0.01% | 400,402 | $1,729,737 | $1,125,130 | -$604,607 | -34.95% | |
| Dimensional Fund Advisors Lp | 0.00% | 397,833 | $1,719,314 | $1,117,911 | -$601,403 | -34.98% | |
| Northern Trust Corp | 0.00% | 337,227 | $1,456,820 | $947,608 | -$509,212 | -34.95% | |
| Charles Schwab Investment Management Inc | 0.00% | 310,701 | $1,342,228 | $873,070 | -$469,158 | -34.95% | |
| Vanguard Fiduciary Trust Co | 0.00% | 288,311 | $1,245,504 | $810,154 | -$435,350 | -34.95% | |
| Ubs Group Ag | 0.00% | 281,978 | $1,218,145 | $792,358 | -$425,787 | -34.95% | |
| Nuveen, Llc | 0.00% | 232,592 | $1,004,798 | $653,584 | -$351,214 | -34.95% | |
| Citadel Advisors Llc | 0.00% | 229,736 | $992,460 | $645,558 | -$346,902 | -34.95% | |
| Xtx Topco Ltd | 0.01% | 228,035 | $985,111 | $640,778 | -$344,333 | -34.95% | |
| Point72 Asset Management, L.P. | 0.00% | 225,653 | $974,821 | $634,085 | -$340,736 | -34.95% | |
| Goldman Sachs Group Inc | 0.00% | 212,056 | $916,082 | $595,877 | -$320,205 | -34.95% | |
| Fmr Llc | 0.00% | 210,634 | $909,940 | $591,882 | -$318,058 | -34.95% | |
| Ironwood Investment Management Llc | 0.25% | 170,555 | $736,798 | $479,260 | -$257,538 | -34.95% | |
| Susquehanna International Group, Llp | 0.00% | 168,620 | $728,439 | $473,822 | -$254,617 | -34.95% | |
| Invesco Ltd. | 0.00% | 160,887 | $695,032 | $452,092 | -$242,940 | -34.95% | |
| Wells Fargo & Company/Mn | 0.00% | 149,158 | $644,362 | $419,134 | -$225,228 | -34.95% | |
| Susquehanna Portfolio Strategies, Llc | 0.01% | 148,618 | $642,030 | $417,617 | -$224,413 | -34.95% | |
| Bnp Paribas Financial Markets | 0.00% | 136,876 | $591,304 | $384,622 | -$206,682 | -34.95% | |
| Bank Of New York Mellon Corp | 0.00% | 131,900 | $569,808 | $370,639 | -$199,169 | -34.95% | |
| Scs Capital Management Llc | 0.00% | 120,035 | $518,551 | $337,298 | -$181,253 | -34.95% | |
| American Century Companies Inc | 0.00% | 100,463 | $434,000 | $282,301 | -$151,699 | -34.95% | |
| Price T Rowe Associates Inc | 0.00% | 95,626 | $414,000 | $268,709 | -$145,291 | -35.09% | |
| Quadrature Capital Ltd | 0.00% | 80,200 | $346,464 | $225,362 | -$121,102 | -34.95% | |
| Cerity Partners Llc | 0.00% | 78,083 | $337,319 | $219,413 | -$117,906 | -34.95% | |
| Bridgeway Capital Management, Llc | 0.01% | 68,226 | $294,736 | $191,715 | -$103,021 | -34.95% | |
| Clearstead Advisors, Llc | 0.00% | 62,261 | $268,969 | $174,953 | -$94,016 | -34.95% | |
| Jain Global Llc | 0.00% | 57,319 | $247,618 | $161,066 | -$86,552 | -34.95% | |
| Algert Global Llc | 0.00% | 55,217 | $238,537 | $155,160 | -$83,377 | -34.95% | |
| Rhumbline Advisers | 0.00% | 53,557 | $231,358 | $150,495 | -$80,863 | -34.95% | |
| Alliancebernstein L.P. | 0.00% | 56,780 | $199,866 | $159,552 | -$40,314 | -20.17% | |
| Peddock Capital Advisors, Llc | 0.04% | 52,105 | $193,310 | $146,415 | -$46,895 | -24.26% | |
| Millennium Management Llc | 0.00% | 40,662 | $175,660 | $114,260 | -$61,400 | -34.95% | |
| Susquehanna Fundamental Investments, Llc | 0.00% | 38,961 | $168,312 | $109,480 | -$58,832 | -34.95% | |
| Canada Pension Plan Investment Board | 0.00% | 38,100 | $164,592 | $107,061 | -$57,531 | -34.95% |
Frequently asked questions about QTRX
Who are the largest institutional holders of QTRX?
The largest institutional holders of QTRX reported in the latest SEC Form 13F filings include Blackrock, Inc., Blue Water Life Science Advisors, Lp, First Eagle U.S. Value, Portolan Capital Management, Llc, and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported QTRX position.
What is QTRX institutional ownership?
This page tracks QTRX positions reported by institutional investment managers through SEC Form 13F. QUANTERIX CORP (QTRX) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own QTRX?
InsiderSet currently tracks 123 institutional managers reporting QTRX holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of QTRX shareholders.
How much QTRX stock do institutions own?
Institutional investment managers disclosed approximately $120.24M in QTRX holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was QTRX institutional ownership last updated?
The latest QTRX institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional QTRX holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its QTRX position after the reporting date.
Are institutions buying or selling QTRX?
Institutional buying and selling can be analyzed by comparing QTRX positions across consecutive 13F reporting periods. InsiderSet's QTRX Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View QTRX ownership changes.
How has QTRX institutional ownership changed over time?
InsiderSet tracks QTRX institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.