QUANTERIX CORP (QTRX) Top 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 March 31, 2026. The institutional investors covered on this page collectively reported approximately $127.46M in QTRX holdings during the latest filing period.
Ameriprise Financial Inc is currently the largest disclosed institutional shareholder of QTRX tracked by InsiderSet, reporting ownership valued at approximately $12.47M in its March 31, 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 $10.20M, representing an estimated loss of -18.18% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 59% of the total disclosed QTRX value among the investors covered in this analysis. Major shareholders include Ameriprise Financial Inc, Blackrock, Inc., Portolan Capital Management, Llc, 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
124
Total Reported Value
$127.46M
Largest Holder
Ameriprise Financial Inc
Largest Position
$12.47M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
150
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Ameriprise Financial Inc | 0.00% | 3,542,374 | $12,469,155 | $10,202,037 | -$2,267,118 | -18.18% | |
| Blackrock, Inc. | 0.00% | 3,277,595 | $11,537,134 | $9,439,474 | -$2,097,660 | -18.18% | |
| Portolan Capital Management, Llc | 0.55% | 2,945,823 | $10,369,297 | $8,483,970 | -$1,885,327 | -18.18% | |
| Blue Water Life Science Advisors, Lp | 6.05% | 2,142,147 | $7,540,357 | $6,169,383 | -$1,370,974 | -18.18% | |
| William Blair Investment Management, Llc | 0.02% | 2,083,699 | $7,334,620 | $6,001,053 | -$1,333,567 | -18.18% | |
| Invenomic Capital Management Lp | 0.31% | 1,932,386 | $6,801,999 | $5,565,272 | -$1,236,727 | -18.18% | |
| Vanguard Capital Management Llc | 0.00% | 1,784,613 | $6,281,838 | $5,139,685 | -$1,142,153 | -18.18% | |
| Levin Capital Strategies, L.P. | 0.39% | 1,464,052 | $5,153,463 | $4,216,470 | -$936,993 | -18.18% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.01% | 1,300,087 | $4,576,306 | $3,744,251 | -$832,055 | -18.18% |
| Geode Capital Management, Llc | 0.00% | 994,764 | $3,502,527 | $2,864,920 | -$637,607 | -18.20% | |
| Trium Capital Llp | 2.54% | 994,217 | $3,499,644 | $2,863,345 | -$636,299 | -18.18% | |
| State Street Corp | 0.00% | 898,277 | $3,161,935 | $2,587,038 | -$574,897 | -18.18% | |
| Empire Financial Management Company, Llc | 0.59% | 736,068 | $2,590,959 | $2,119,876 | -$471,083 | -18.18% | |
| Millennium Management Llc | 0.00% | 689,167 | $2,425,868 | $1,984,801 | -$441,067 | -18.18% | |
| Envestnet Asset Management Inc | 0.00% | 682,711 | $2,403,143 | $1,966,208 | -$436,935 | -18.18% | |
| Russell Investments Group, Ltd. | 0.00% | 641,981 | $2,259,773 | $1,848,905 | -$410,868 | -18.18% | |
| Marshall Wace, Llp | 0.00% | 622,380 | $2,190,778 | $1,792,454 | -$398,324 | -18.18% | |
| Williams Jones Wealth Management, Llc. | 0.03% | 613,439 | $2,159,305 | $1,766,704 | -$392,601 | -18.18% | |
| Morgan Stanley | 0.00% | 607,856 | $2,139,655 | $1,750,625 | -$389,030 | -18.18% | |
| Vanguard Portfolio Management Llc | 0.00% | 576,600 | $2,029,632 | $1,660,608 | -$369,024 | -18.18% | |
| Tikvah Management Llc | 0.62% | 571,619 | $2,012,099 | $1,646,263 | -$365,836 | -18.18% | |
| Topline Capital Management, Llc | 0.33% | 563,135 | $1,982,235 | $1,621,829 | -$360,406 | -18.18% | |
| Pier Capital, Llc | 0.29% | 492,368 | $1,733,135 | $1,418,020 | -$315,115 | -18.18% | |
| Dimensional Fund Advisors Lp | 0.00% | 443,118 | $1,559,499 | $1,276,180 | -$283,319 | -18.17% | |
| Ubs Group Ag | 0.00% | 376,982 | $1,326,977 | $1,085,708 | -$241,269 | -18.18% | |
| Northern Trust Corp | 0.00% | 349,658 | $1,230,797 | $1,007,015 | -$223,782 | -18.18% | |
| Charles Schwab Investment Management Inc | 0.00% | 345,913 | $1,217,614 | $996,229 | -$221,385 | -18.18% | |
| Parkman Healthcare Partners Llc | 0.12% | 341,453 | $1,201,915 | $983,385 | -$218,530 | -18.18% | |
| Tudor Investment Corp Et Al | 0.01% | 316,001 | $1,112,324 | $910,083 | -$202,241 | -18.18% | |
| Vanguard Fiduciary Trust Co | 0.00% | 270,529 | $952,262 | $779,124 | -$173,138 | -18.18% | |
| Goldman Sachs Group Inc | 0.00% | 270,187 | $951,059 | $778,139 | -$172,920 | -18.18% | |
| Royal Bank Of Canada | 0.00% | 232,101 | $817,000 | $668,451 | -$148,549 | -18.18% | |
| Fmr Llc | 0.00% | 183,356 | $645,413 | $528,065 | -$117,348 | -18.18% | |
| Ironwood Investment Management Llc | 0.25% | 169,825 | $597,784 | $489,096 | -$108,688 | -18.18% | |
| Jane Street Group, Llc | 0.00% | 155,655 | $547,906 | $448,286 | -$99,620 | -18.18% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 136,207 | $479,449 | $392,276 | -$87,173 | -18.18% |
| Bnp Paribas Financial Markets | 0.00% | 134,403 | $473,099 | $387,081 | -$86,018 | -18.18% | |
| Wells Fargo & Company/Mn | 0.00% | 129,024 | $454,165 | $371,589 | -$82,576 | -18.18% | |
| Bank Of New York Mellon Corp | 0.00% | 126,363 | $444,797 | $363,925 | -$80,872 | -18.18% | |
| Clearstead Advisors, Llc | 0.00% | 124,120 | $436,902 | $357,466 | -$79,436 | -18.18% | |
| Scs Capital Management Llc | 0.00% | 120,035 | $422,523 | $345,701 | -$76,822 | -18.18% | |
| Invesco Ltd. | 0.00% | 116,216 | $409,080 | $334,702 | -$74,378 | -18.18% | |
| Xtx Topco Ltd | 0.01% | 111,660 | $393,043 | $321,581 | -$71,462 | -18.18% | |
| American Century Companies Inc | 0.00% | 101,810 | $358,371 | $293,213 | -$65,158 | -18.18% | |
| Point72 Asset Management, L.P. | 0.00% | 93,253 | $328,251 | $268,569 | -$59,682 | -18.18% | |
| Brevan Howard Capital Management Lp | 0.00% | 87,386 | $307,599 | $251,672 | -$55,927 | -18.18% | |
| Aqr Capital Management Llc | 0.00% | 84,132 | $296,145 | $242,300 | -$53,845 | -18.18% | |
| State Of Wisconsin Investment Board | 0.00% | 84,124 | $296,116 | $242,277 | -$53,839 | -18.18% | |
| Alliancebernstein L.P. | 0.00% | 44,480 | $282,893 | $128,102 | -$154,791 | -54.72% | |
| Dynamic Technology Lab Private Ltd | 0.04% | 77,871 | $274,106 | $224,268 | -$49,838 | -18.18% |
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.