QUANTERIX CORP (QTRX) Institutional Shareholders
QUANTERIX CORP (QTRX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $120.45M in QTRX holdings during the latest filing period.
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 $11.16M, representing an estimated loss of -28.94% 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
126
Total Reported Value
$120.45M
Largest Holder
Blackrock, Inc.
Largest Position
$15.70M
Insider Transactions (90d)
41
Latest Filing Quarter
Q2 2026
New Institutional Positions
135
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 | $11,160,712 | -$4,544,264 | -28.94% | |
| Blue Water Life Science Advisors, Lp | 9.45% | 3,474,202 | $15,008,553 | $10,665,800 | -$4,342,753 | -28.94% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 2,753,165 | $11,893,673 | $8,452,217 | -$3,441,456 | -28.94% |
| Portolan Capital Management, Llc | 0.31% | 1,899,308 | $8,205,011 | $5,830,876 | -$2,374,135 | -28.94% | |
| Vanguard Capital Management Llc | 0.00% | 1,800,644 | $7,778,782 | $5,527,977 | -$2,250,805 | -28.94% | |
| Aqr Capital Management Llc | 0.00% | 1,343,005 | $5,801,782 | $4,123,025 | -$1,678,757 | -28.94% | |
| Geode Capital Management, Llc | 0.00% | 1,131,377 | $4,888,805 | $3,473,327 | -$1,415,478 | -28.95% | |
| Ameriprise Financial Inc | 0.00% | 987,424 | $4,265,671 | $3,031,392 | -$1,234,279 | -28.94% | |
| Marshall Wace, Llp | 0.00% | 973,872 | $4,207,125 | $2,989,787 | -$1,217,338 | -28.94% | |
| State Street Corp | 0.00% | 932,307 | $4,027,566 | $2,862,182 | -$1,165,384 | -28.94% | |
| Tikvah Management Llc | 0.75% | 571,555 | $2,469,118 | $1,754,674 | -$714,444 | -28.94% | |
| Vanguard Portfolio Management Llc | 0.00% | 489,566 | $2,114,925 | $1,502,968 | -$611,957 | -28.94% | |
| Jacobs Levy Equity Management, Inc | 0.01% | 487,600 | $2,106,432 | $1,496,932 | -$609,500 | -28.94% | |
| Morgan Stanley | 0.00% | 447,688 | $1,934,013 | $1,374,402 | -$559,611 | -28.94% | |
| Jane Street Group, Llc | 0.00% | 419,050 | $1,810,296 | $1,286,484 | -$523,813 | -28.94% | |
| Gsa Capital Partners Llp | 0.11% | 410,252 | $1,772,000 | $1,259,474 | -$512,526 | -28.92% | |
| Tudor Investment Corp Et Al | 0.01% | 400,402 | $1,729,737 | $1,229,234 | -$500,503 | -28.94% | |
| Dimensional Fund Advisors Lp | 0.00% | 397,833 | $1,719,314 | $1,221,347 | -$497,967 | -28.96% | |
| Northern Trust Corp | 0.00% | 337,227 | $1,456,820 | $1,035,287 | -$421,533 | -28.94% | |
| Charles Schwab Investment Management Inc | 0.00% | 310,701 | $1,342,228 | $953,852 | -$388,376 | -28.94% | |
| Vanguard Fiduciary Trust Co | 0.00% | 288,311 | $1,245,504 | $885,115 | -$360,389 | -28.94% | |
| Ubs Group Ag | 0.00% | 281,978 | $1,218,145 | $865,672 | -$352,473 | -28.94% | |
| Nuveen, Llc | 0.00% | 232,592 | $1,004,798 | $714,057 | -$290,741 | -28.94% | |
| Citadel Advisors Llc | 0.00% | 229,736 | $992,460 | $705,290 | -$287,170 | -28.94% | |
| Xtx Topco Ltd | 0.01% | 228,035 | $985,111 | $700,067 | -$285,044 | -28.94% | |
| Point72 Asset Management, L.P. | 0.00% | 225,653 | $974,821 | $692,755 | -$282,066 | -28.94% | |
| Goldman Sachs Group Inc | 0.00% | 212,056 | $916,082 | $651,012 | -$265,070 | -28.94% | |
| Fmr Llc | 0.00% | 210,634 | $909,940 | $646,646 | -$263,294 | -28.94% | |
| Ironwood Investment Management Llc | 0.25% | 170,555 | $736,798 | $523,604 | -$213,194 | -28.94% | |
| Susquehanna International Group, Llp | 0.00% | 168,620 | $728,439 | $517,663 | -$210,776 | -28.94% | |
| Invesco Ltd. | 0.00% | 160,887 | $695,032 | $493,923 | -$201,109 | -28.94% | |
| Wells Fargo & Company/Mn | 0.00% | 149,158 | $644,362 | $457,915 | -$186,447 | -28.94% | |
| Susquehanna Portfolio Strategies, Llc | 0.01% | 148,618 | $642,030 | $456,257 | -$185,773 | -28.94% | |
| Bnp Paribas Financial Markets | 0.00% | 136,876 | $591,304 | $420,209 | -$171,095 | -28.94% | |
| Bank Of New York Mellon Corp | 0.00% | 131,900 | $569,808 | $404,933 | -$164,875 | -28.94% | |
| Scs Capital Management Llc | 0.00% | 120,035 | $518,551 | $368,507 | -$150,044 | -28.94% | |
| American Century Companies Inc | 0.00% | 100,463 | $434,000 | $308,421 | -$125,579 | -28.94% | |
| Price T Rowe Associates Inc | 0.00% | 95,626 | $414,000 | $293,572 | -$120,428 | -29.09% | |
| Quadrature Capital Ltd | 0.00% | 80,200 | $346,464 | $246,214 | -$100,250 | -28.94% | |
| Cerity Partners Llc | 0.00% | 78,083 | $337,319 | $239,715 | -$97,604 | -28.94% | |
| Bridgeway Capital Management, Llc | 0.01% | 68,226 | $294,736 | $209,454 | -$85,282 | -28.94% | |
| Clearstead Advisors, Llc | 0.00% | 62,261 | $268,969 | $191,141 | -$77,828 | -28.94% | |
| Jain Global Llc | 0.00% | 57,319 | $247,618 | $175,969 | -$71,649 | -28.94% | |
| Algert Global Llc | 0.00% | 55,217 | $238,537 | $169,516 | -$69,021 | -28.94% | |
| Rhumbline Advisers | 0.00% | 53,557 | $231,358 | $164,420 | -$66,938 | -28.93% | |
| Peddock Capital Advisors, Llc | 0.04% | 52,105 | $225,094 | $159,962 | -$65,132 | -28.94% | |
| Alliancebernstein L.P. | 0.00% | 56,780 | $199,866 | $174,315 | -$25,551 | -12.78% | |
| Millennium Management Llc | 0.00% | 40,662 | $175,660 | $124,832 | -$50,828 | -28.94% | |
| Susquehanna Fundamental Investments, Llc | 0.00% | 38,961 | $168,312 | $119,610 | -$48,702 | -28.94% | |
| Canada Pension Plan Investment Board | 0.00% | 38,100 | $164,592 | $116,967 | -$47,625 | -28.94% |
Frequently asked questions about QTRX
Who owns the most QTRX stock?
The largest holders of QTRX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for QUANTERIX CORP (QTRX).
Is QTRX widely held by superinvestors?
Many widely followed stocks like QTRX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly QTRX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.