Waters Corporation
MX ˙ BMV ˙ US9418481035
SecurityMX:WAT / Waters Corporation
InstitutionKBC Group NV
Latest Disclosed Ownership23,570 shares
Latest Disclosed Value $ 7,020
KBC Group NV reports 40.49% increase in ownership of WAT / Waters Corporation

On May 7, 2026 - KBC Group NV filed a 13F-HR form disclosing ownership of 23,570 shares of Waters Corporation (MX:WAT) valued at $7,020 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 16,777 shares of Waters Corporation. This represents a change in shares of 40.49% during the quarter.

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)
2026-05-07 2026-03-31 13F WATERS COM 941848103 23,570 6,793 40.49 7 16.67 0.0091
2026-01-26 2025-12-31 13F WATERS COM 941848103 16,777 3,994 31.24 6 100.00 0.0145
2026-01-20 2025-09-30 13F WATERS COM 941848103 12,783 0 0.00 4 -25.00 0.0092
2025-08-08 2025-06-30 13F WATERS COM 941848103 12,783 2,417 23.32 4 33.33 0.0121
2025-04-25 2025-03-31 13F WATERS COM 941848103 10,366 888 9.37 4 0.00 0.0119
2025-01-22 2024-12-31 13F WATERS COM 941848103 9,478 -635 -6.28 4 0.00 0.0097
2024-11-06 2024-09-30 13F WATERS COM 941848103 10,113 -2,337 -18.77 4 0.00 0.0110
2024-07-17 2024-06-30 13F WATERS COM 941848103 12,450 -298 -2.34 4 -25.00 0.0109
2024-05-08 2024-03-31 13F WATERS COM 941848103 12,748 -66,759 -83.97 4 -84.62 0.0139
2024-02-13 2023-12-31 13F WATERS COM 941848103 79,507 1,832 2.36 26 23.81 0.0928
2024-02-15 2023-09-30 13F/A-1 WATERS COM 941848103 77,675 -95,963 -55.27 21 -54.35 0.0869
2023-11-22 2023-09-30 13F WATERS COM 941848103 173,541 0 46 0.1926
2024-02-15 2023-06-30 13F/A-1 WATERS COM 941848103 173,638 16,202 10.29 46 -4.17 0.1903
2023-07-28 2023-06-30 13F WATERS COM 941848103 173,541 16,202 46 0.1926
2024-02-14 2023-03-31 13F/A-1 WATERS COM 941848103 157,436 4,591 3.00 49 -7.69 0.2069
2023-05-04 2023-03-31 13F WATERS COM 941848103 157,339 1,005 49 0.2295
2024-02-14 2022-12-31 13F/A-1 WATERS COM 941848103 152,845 -3,580 -2.29 52 23.81 0.2540
2023-02-13 2022-12-31 13F WATERS COM 941848103 156,334 -91 42 0.0002
2024-02-15 2022-09-30 13F/A-1 WATERS COM 941848103 156,425 -2,578 -1.62 42 -19.23 0.2191
2022-11-08 2022-09-30 13F WATERS COM 941848103 156,334 -2,669 42,137 0.2202
2024-02-14 2022-06-30 13F/A-1 WATERS COM 941848103 159,003 21,353 15.51 53 23.81 0.2625
2022-07-26 2022-06-30 13F WATERS COM 941848103 158,889 21,239 52,589 0.2647
2024-02-14 2022-03-31 13F/A-1 WATERS COM 941848103 137,650 40,791 42.11 43 16.67 0.1689
2022-05-06 2022-03-31 13F WATERS COM 941848103 137,650 40,791 42,725 0.1578
2024-02-14 2021-12-31 13F/A-1 WATERS COM 941848103 96,859 33,961 53.99 36 -99.84 0.1190
2022-02-03 2021-12-31 13F WATERS COM 941848103 96,859 33,961 36,090 0.1130
2021-11-10 2021-09-30 13F WATERS COM 941848103 62,898 1,103 1.78 22,473 5.23 0.0824
2022-02-15 2021-06-30 13F/A-1 WATERS COM 941848103 61,795 -33,754 -35.33 21,357 -21.34 0.0770
2021-08-11 2021-06-30 13F WATERS COM 941848103 61,795 -33,754 21,357 0.0770
2022-02-14 2021-03-31 13F/A-1 WATERS COM 941848103 95,549 -25,221 -20.88 27,152 -90.91 0.1100
2021-04-26 2021-03-31 13F WATERS COM 941848103 95,549 -25,221 27,152 0.1100
2022-02-14 2020-12-31 13F/A-1 WATERS COM 941848103 120,770 59,760 97.95 298,809 2,403.01 0.1406
2021-02-10 2020-12-31 13F WATERS COM 941848103 120,770 59,760 29,881 0.1375
2022-02-14 2020-09-30 13F/A-1 WATERS COM 941848103 61,010 54,288 807.62 11,938 884.17 0.0703
2020-10-28 2020-09-30 13F WATERS COM 941848103 61,010 54,288 11,938 0.0706
2022-02-14 2020-06-30 13F/A-1 WATERS COM 941848103 6,722 -720 -9.67 1,213 -10.48 0.0080
2020-08-10 2020-06-30 13F WATERS COM 941848103 6,722 -720 1,213 0.0081
2020-05-04 2020-03-31 13F WATERS COM 941848103 7,442 757 11.32 1,355 -13.25 0.0113
2020-02-11 2019-12-31 13F WATERS COM 941848103 6,685 76 1.15 1,562 5.90 0.0099
2019-11-07 2019-09-30 13F WATERS COM 941848103 6,609 0 0.00 1,475 3.65 0.0108
2019-08-08 2019-06-30 13F/A-1 WATERS COM 941848103 6,609 0 0.00 1,423 -14.48 0.0110
2019-07-30 2019-06-30 13F WATERS COM 941848103 6,609 0 1,423
2019-08-07 2019-03-31 13F/A-1 WATERS COM 941848103 6,609 0 0.00 1,664 33.44 0.0137
2019-05-10 2019-03-31 13F WATERS COM 941848103 6,609 0 1,664
2019-01-31 2018-12-31 13F WATERS COM 941848103 6,609 -3,000 -31.22 1,247 -33.35 0.0139
2018-11-14 2018-09-30 13F WATERS COM 941848103 9,609 1,959 25.61 1,871 26.33 0.0142
2018-08-03 2018-06-30 13F WATERS COM 941848103 7,650 1,237 19.29 1,481 16.25 0.0129
2018-08-03 2018-03-31 13F/A-1 WATERS COM 941848103 6,413 -2,419 -27.39 1,274 -25.32 0.0118
2018-05-09 2018-03-31 13F WATERS COM 941848103 6,413 -2,419 1,274
2018-08-03 2017-12-31 13F/A-1 WATERS COM 941848103 8,832 -1,333 -13.11 1,706 -6.52 0.0146
2018-02-07 2017-12-31 13F WATERS COM 941848103 8,832 -1,333 1,706
2017-11-13 2017-09-30 13F WATERS COM 941848103 10,165 -6,278 -38.18 1,825 -39.63 0.0166
2017-08-04 2017-06-30 13F WATERS COM 941848103 16,443 0 0.00 3,023 17.63 0.0292
2017-05-10 2017-03-31 13F WATERS COM 941848103 16,443 -777 -4.51 2,570 11.06 0.0232
2017-02-16 2016-12-31 13F WATERS COM 941848103 17,220 -1,237 -6.70 2,314 -20.89 0.0229
2016-11-03 2016-09-30 13F WATERS COM 941848103 18,457 11,071 149.89 2,925 181.52 0.0346
2016-08-03 2016-06-30 13F WATERS COM 941848103 7,386 -1,845 -19.99 1,039 -14.63 0.0149
2016-05-11 2016-03-31 13F WATERS COM 941848103 9,231 -3,763 -28.96 1,217 -30.38 0.0202
2016-02-11 2015-12-31 13F WATERS COM 941848103 12,994 7,089 120.05 1,748 150.43 0.0322
2015-11-12 2015-09-30 13F WATERS COM 941848103 5,905 -731 -11.02 698 -18.08 0.0140
2015-12-16 2015-06-30 13F/A-1 WATERS COM 941848103 6,636 -1,344 -16.84 852 -14.11 0.0110
2015-07-31 2015-06-30 13F WATERS COM 941848103 6,636 852
2015-12-16 2015-03-31 13F/A-1 WATERS COM 941848103 7,980 -4,275 -34.88 992 -28.22 0.0126
2015-04-30 2015-03-31 13F WATERS COM 941848103 7,980 992
2015-12-15 2014-12-31 13F/A-1 WATERS COM 941848103 12,255 4,243 52.96 1,382 74.06 0.0165
2015-02-12 2014-12-31 13F WATERS COM 941848103 12,255 1,382
2014-10-16 2014-09-30 13F WATERS COM 941848103 8,012 272 3.51 794 -1.85 0.0277
2014-08-01 2014-06-30 13F WATERS COM 941848103 7,740 -3,417 -30.63 809 -33.14 0.0092
2014-04-30 2014-03-31 13F WATERS COM 941848103 11,157 -5,122 -31.46 1,210 -25.68 0.0191
2014-01-21 2013-12-31 13F WATERS COM 941848103 16,279 -11,411 -41.21 1,628 -44.64 0.0246
2013-11-06 2013-09-30 13F WATERS COM 941848103 27,690 -1,610 -5.49 2,941 0.31 0.0473
2013-07-29 2013-06-30 13F WATERS COM 941848103 29,300 29,300 2,932 0.0544
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.