Quanterix公司
US ˙ NasdaqGM ˙ US74766Q1013

SecurityQTRX / Quanterix Corporation
InstitutionUBS Group AG
Latest Disclosed Ownership376,982 shares
Latest Disclosed Value $ 1,326,977
UBS Group AG reports 21.02% increase in ownership of QTRX / Quanterix Corporation

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 376,982 shares of Quanterix Corporation (US:QTRX) valued at $1,326,977 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 311,499 shares of Quanterix Corporation. This represents a change in shares of 21.02% during the quarter. The current value of the position is $1,432,532 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-05 2026-03-31 13F QUANTERIX COM 74766Q101 376,982 65,483 21.02 1,327 -33.06 0.0000
2026-01-29 2025-12-31 13F QUANTERIX COM 74766Q101 311,499 -62,101 -16.62 1,981 -2.32 0.0001
2025-11-13 2025-09-30 13F QUANTERIX COM 74766Q101 373,600 -11,351 -2.95 2,029 -20.75 0.0003
2025-08-14 2025-06-30 13F QUANTERIX COM 74766Q101 384,951 -730,027 -65.47 2,560 -64.74 0.0004
2025-05-13 2025-03-31 13F QUANTERIX COM 74766Q101 1,114,978 180,428 19.31 7,259 -26.94 0.0013
2025-02-14 2024-12-31 13F QUANTERIX COM 74766Q101 934,550 913,386 4,315.75 9,934 3,525.55 0.0018
2024-11-14 2024-09-30 13F QUANTERIX COM 74766Q101 21,164 -5 -0.02 274 -1.79 0.0001
2024-08-14 2024-06-30 13F QUANTERIX COM 74766Q101 21,169 -17,190 -44.81 280 -69.10 0.0001
2024-05-13 2024-03-31 13F QUANTERIX COM 74766Q101 38,359 -542 -1.39 904 -15.05 0.0002
2024-02-09 2023-12-31 13F QUANTERIX COM 74766Q101 38,901 21,758 126.92 1,064 128.60 0.0003
2023-11-09 2023-09-30 13F QUANTERIX COM 74766Q101 17,143 -7,281 -29.81 465 -15.45 0.0002
2023-08-11 2023-06-30 13F QUANTERIX COM 74766Q101 24,424 13,457 122.70 551 347.15 0.0002
2023-05-12 2023-03-31 13F QUANTERIX COM 74766Q101 10,967 -7,540 -40.74 124 -51.95 0.0000
2023-02-08 2022-12-31 13F QUANTERIX COM 74766Q101 18,507 17,499 1,736.01 256 2,227.27 0.0001
2022-11-10 2022-09-30 13F QUANTERIX COM 74766Q101 1,008 -13,748 -93.17 11 -95.40 0.0000
2022-08-10 2022-06-30 13F QUANTERIX COM 74766Q101 14,756 201 1.38 239 -43.76 0.0001
2022-05-16 2022-03-31 13F QUANTERIX COM 74766Q101 14,555 -13,925 -48.89 425 -64.82 0.0001
2022-02-14 2021-12-31 13F QUANTERIX COM 74766Q101 28,480 16,264 133.14 1,208 98.68 0.0003
2021-11-15 2021-09-30 13F QUANTERIX COM 74766Q101 12,216 3,813 45.38 608 23.33 0.0002
2021-08-13 2021-06-30 13F QUANTERIX COM 74766Q101 8,403 946 12.69 493 13.07 0.0002
2021-05-12 2021-03-31 13F QUANTERIX COM 74766Q101 7,457 591 8.61 436 36.68 0.0001
2021-02-11 2020-12-31 13F QUANTERIX COM 74766Q101 6,866 5,701 489.36 319 717.95 0.0001
2020-11-12 2020-09-30 13F QUANTERIX COM 74766Q101 1,165 -894 -43.42 39 -30.36 0.0000
2020-07-31 2020-06-30 13F QUANTERIX COM 74766Q101 2,059 -1,464 -41.56 56 -13.85 0.0000
2020-05-01 2020-03-31 13F QUANTERIX COM 74766Q101 3,523 -10,984 -75.72 65 -81.05 0.0000
2020-02-14 2019-12-31 13F QUANTERIX COM 74766Q101 14,507 11,216 340.81 343 376.39 0.0001
2019-11-14 2019-09-30 13F QUANTERIX COM 74766Q101 3,291 2,913 770.63 72 453.85 0.0000
2019-08-14 2019-06-30 13F QUANTERIX COM 74766Q101 378 -567 -60.00 13 -45.83 0.0000
2019-05-14 2019-03-31 13F QUANTERIX COM 74766Q101 945 945 24 0.0000
2019-02-14 2018-12-31 13F QUANTERIX COM 74766Q101 0 -1,989 -100.00 0 -100.00
2018-11-14 2018-09-30 13F QUANTERIX COM 74766Q101 1,989 575 40.66 43 115.00 0.0000
2018-08-14 2018-06-30 13F QUANTERIX COM 74766Q101 1,414 1,155 445.95 20 400.00 0.0000
2018-05-15 2018-03-31 13F QUANTERIX COM 74766Q101 259 -913 -77.90 4 -84.00 0.0000
2018-02-14 2017-12-31 13F QUANTERIX COM 74766Q101 1,172 1,172 25 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.