QTRX — QUANTERIX CORP
As of Q2 2026, 28 SEC-registered investment managers reported holding QTRX (QUANTERIX CORP) in their latest 13F filings, with a combined reported value of $56.25M across 13.12M shares. That is +31.2% by share count (+3.12M shares) versus the previous quarter, while reported value moved +60.9%. Ownership is concentrated: the five largest holders account for 75.5% of reported value and the top ten for 88.1%.
Compared with the prior quarter, 4 opened new positions, 16 added to existing stakes, 7 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
QTRX is classified in the Industrials sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| Vanguard Group history | Q4 2025 | 2.68M | $17.03M | 0.00% | Add |
| BlackRock Inc history | Q2 2026 | 3.64M | $15.70M | 0.00% | Add |
| First Eagle Investment Management history | Q2 2026 | 2.75M | $11.89M | 0.02% | Add |
| AQR Capital Management history | Q2 2026 | 1.34M | $5.80M | 0.00% | Add |
| Geode Capital Management history | Q2 2026 | 1.13M | $4.89M | 0.00% | Add |
| Marshall Wace history | Q2 2026 | 973.87K | $4.21M | 0.00% | Add |
| Baillie Gifford & Co history | Q2 2025 | 600.81K | $4.00M | 0.00% | Hold |
| Royce & Associates history | Q3 2024 | 215.95K | $2.80M | 0.03% | Hold |
| Morgan Stanley history | Q2 2026 | 447.69K | $1.93M | 0.00% | Reduce |
| Northern Trust Corp history | Q2 2026 | 337.23K | $1.46M | 0.00% | Reduce |
| Prudential Financial history | Q2 2024 | 105.29K | $1.39M | 0.00% | Reduce |
| Charles Schwab Investment Management history | Q2 2026 | 310.70K | $1.34M | 0.00% | Reduce |
| UBS Group AG history | Q2 2026 | 281.98K | $1.22M | 0.00% | Reduce |
| Balyasny Asset Management history | Q2 2026 | 260.00K | $1.12M | 0.00% | New |
| Farallon Capital Management history | Q2 2024 | 80.00K | $1.06M | 0.01% | Reduce |
| Citadel Advisors history | Q2 2026 | 229.74K | $992.46K | 0.00% | Add |
| Point72 Asset Management history | Q2 2026 | 225.65K | $974.82K | 0.00% | Add |
| Goldman Sachs Group history | Q2 2026 | 212.06K | $916.08K | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | Q2 2026 | 210.63K | $909.94K | 0.00% | Add |
| Invesco Ltd history | Q2 2026 | 160.89K | $695.03K | 0.00% | Add |
New Positions (Q2 2026)
- Balyasny Asset Management 260.00K sh · $1.12M
- CPP Investments 38.10K sh · $164.59K
- JPMorgan Chase & Co 19.05K sh · $86.48K
- D. E. Shaw & Co 17.67K sh · $76.34K
Fully Exited (vs previous quarter)
- Renaissance Technologies sold 136.21K sh · $479.45K
- Two Sigma Investments sold 35.19K sh · $123.85K
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q3 2021 | Q4 2021 | Q1 2022 | Q2 2022 | Q3 2022 | Q4 2022 | Q1 2023 | Q2 2023 | Q3 2023 | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock Inc | — | — | — | — | — | — | — | — | — | — | — | — | 3.21M | 3.16M | 3.07M | 2.92M | 3.11M | 3.38M | 3.28M | 3.64M |
| First Eagle Investment Management | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 531.43K | 1.30M | 2.75M |
| AQR Capital Management | 29.83K | 24.17K | 36.43K | 15.47K | 307.49K | 195.22K | 131.38K | — | 24.44K | 140.61K | 147.50K | 147.99K | 103.44K | 32.52K | 98.99K | 88.26K | 157.97K | 65.52K | 84.13K | 1.34M |
| Geode Capital Management | 565.27K | 569.26K | 573.55K | 608.03K | 618.43K | 640.16K | 670.32K | 708.07K | 730.68K | 763.85K | 798.97K | 840.44K | 858.67K | 863.50K | 865.87K | 887.08K | 1.01M | 1.07M | 994.76K | 1.13M |
| Marshall Wace | 1.56M | 1.58M | 1.49M | 1.07M | 211.49K | 96.37K | — | — | — | — | — | 25.80K | — | — | — | 444.19K | 608.71K | 155.17K | 622.38K | 973.87K |
| Morgan Stanley | 27.59K | 33.06K | 119.91K | 77.73K | 254.28K | 243.27K | 260.28K | 299.23K | 303.11K | 349.88K | 215.83K | 186.49K | 308.18K | 250.82K | 596.05K | 771.44K | 806.26K | 823.00K | 607.86K | 447.69K |
| Northern Trust Corp | 336.46K | 313.67K | 304.63K | 312.83K | 310.52K | 312.71K | 312.45K | 351.31K | 352.28K | 366.07K | 358.40K | 346.85K | 346.75K | 366.16K | 323.11K | 321.03K | 353.66K | 345.56K | 349.66K | 337.23K |
| Charles Schwab Investment Management | 249.69K | 249.10K | 257.72K | 240.59K | 249.30K | 252.78K | 253.89K | 261.05K | 267.03K | 295.81K | 315.38K | 328.52K | 325.60K | 266.62K | 292.81K | 298.99K | 331.25K | 362.74K | 345.91K | 310.70K |
| UBS Group AG | 12.22K | 28.48K | 14.55K | 14.76K | 1.01K | 18.51K | 10.97K | 24.42K | 17.14K | 38.90K | 38.36K | 21.17K | 21.16K | 934.55K | 1.11M | 384.95K | 373.60K | 311.50K | 376.98K | 281.98K |
| Balyasny Asset Management | — | — | — | — | — | — | — | — | — | 28.50K | — | — | 41.50K | 30.63K | 44.51K | 767.80K | — | — | — | 260.00K |
| Citadel Advisors | 138.44K | 40.79K | 72.91K | 121.91K | 82.17K | 107.61K | 80.05K | 41.09K | 67.56K | 44.34K | 77.49K | 267.25K | 202.59K | 211.20K | 221.16K | — | 93.78K | 98.57K | 87.60K | 229.74K |
| Point72 Asset Management | — | 184.60K | 215.00K | — | 356.52K | 1.09M | 346.70K | 301.54K | 788.41K | 276.92K | 20.32K | — | — | — | — | — | — | — | 93.25K | 225.65K |
| Goldman Sachs Group | 662.11K | 613.07K | 96.20K | 208.14K | 61.21K | 111.16K | 93.03K | 122.49K | 146.13K | 291.09K | 236.73K | 312.02K | 304.18K | 290.04K | 349.70K | 253.82K | 278.07K | 248.24K | 270.19K | 212.06K |
| Fidelity Management & Research (FMR) | 341.39K | 209.02K | 1.29M | 2.61M | 324.92K | 69.90K | 290.58K | 2.13M | 836.79K | 2.84K | 15.20K | 14.22K | 30.24K | 82.47K | 97.94K | 126.63K | 117.13K | 159.91K | 183.36K | 210.63K |
| Invesco Ltd | 459.94K | 632.99K | 1.10M | 625.54K | 12.33K | 13.95K | 46.24K | 737.86K | 1.10M | 870.03K | 810.53K | 737.22K | 28.93K | 33.65K | 54.19K | 75.20K | 98.69K | 113.20K | 116.22K | 160.89K |
| Wells Fargo & Co | 22.91K | 31.85K | 23.19K | 7.45K | 8.87K | 5.78K | 12.52K | 20.14K | 38.15K | 49.53K | 47.39K | 48.62K | 49.57K | 46.56K | 44.38K | 138.74K | 144.32K | 162.69K | 129.02K | 149.16K |
| BNY Mellon | 437.31K | 945.61K | 832.66K | 812.53K | 120.64K | 121.81K | 122.07K | 134.53K | 132.25K | 125.35K | 115.70K | 132.10K | 106.22K | 108.19K | 103.75K | 111.95K | 117.54K | 123.52K | 126.36K | 131.90K |
| Millennium Management | 801.12K | 1.05M | 1.82M | 1.51M | 1.81M | 1.65M | 1.42M | 1.15M | 1.98M | 2.21M | 2.27M | 834.85K | 2.06M | 2.19M | 55.71K | 12.12K | 1.21M | 402.63K | 689.17K | 40.66K |
| CPP Investments | — | — | — | — | — | — | — | — | — | — | — | 10.60K | 6.20K | 10.20K | 10.20K | 3.00K | — | — | — | 38.10K |
| Deutsche Bank AG | 20.23K | 21.25K | 34.24K | 18.87K | 14.89K | 1.03M | 985.75K | 808.19K | 40.14K | 40.07K | 39.15K | 17.91K | 24.72K | 35.73K | 30.85K | 24.32K | 28.09K | 29.91K | 35.46K | 36.68K |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details