Waters Corporation
MX ˙ BMV ˙ US9418481035
SecurityMX:WAT / Waters Corporation
InstitutionProShare Advisors LLC
Latest Disclosed Ownership15,005 shares
Latest Disclosed Value $ 4,468,489
ProShare Advisors LLC reports 25.40% increase in ownership of WAT / Waters Corporation

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 15,005 shares of Waters Corporation (MX:WAT) valued at $4,468,489 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 11,966 shares of Waters Corporation. This represents a change in shares of 25.40% 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)
2026-04-24 2026-03-31 13F WATERS COM 941848103 15,005 3,039 25.40 4,468 -1.69 0.0066
2026-02-06 2025-12-31 13F WATERS COM 941848103 11,966 137 1.16 4,545 28.17 0.0080
2025-11-06 2025-09-30 13F WATERS COM 941848103 11,829 1,208 11.37 3,546 -4.34 0.0074
2025-08-07 2025-06-30 13F WATERS COM 941848103 10,621 1,206 12.81 3,707 6.83 0.0074
2025-05-08 2025-03-31 13F WATERS COM 941848103 9,415 458 5.11 3,470 4.46 0.0078
2025-02-14 2024-12-31 13F WATERS COM 941848103 8,957 -7,079 -44.14 3,323 -42.44 0.0076
2024-11-14 2024-09-30 13F WATERS COM 941848103 16,036 6,534 68.76 5,771 109.40 0.0141
2024-08-13 2024-06-30 13F WATERS COM 941848103 9,502 927 10.81 2,757 -6.61 0.0074
2024-05-08 2024-03-31 13F WATERS COM 941848103 8,575 -1,083 -11.21 2,952 -7.17 0.0078
2024-02-14 2023-12-31 13F WATERS COM 941848103 9,658 -793 -7.59 3,180 10.96 0.0097
2023-11-13 2023-09-30 13F WATERS COM 941848103 10,451 -1,319 -11.21 2,866 -8.67 0.0089
2023-08-10 2023-06-30 13F WATERS COM 941848103 11,770 -80 -0.68 3,137 -14.50 0.0091
2023-05-26 2023-03-31 13F/A-1 WATERS COM 941848103 11,850 948 8.70 3,669 -1.74 0.0112
2023-05-12 2023-03-31 13F WATERS COM 941848103 11,850 948 3,669 0.0117
2023-02-02 2022-12-31 13F WATERS COM 941848103 10,902 -621 -5.39 3,735 20.22 0.0131
2022-11-07 2022-09-30 13F WATERS COM 941848103 11,523 -1,037 -8.26 3,106 -25.32 0.0119
2022-08-01 2022-06-30 13F WATERS COM 941848103 12,560 -341 -2.64 4,159 3.85 0.0138
2022-05-10 2022-03-31 13F WATERS COM 941848103 12,901 -367 -2.77 4,005 -18.99 0.0086
2022-02-08 2021-12-31 13F WATERS COM 941848103 13,268 2,942 28.49 4,944 34.02 0.0097
2021-11-12 2021-09-30 13F WATERS COM 941848103 10,326 -321 -3.01 3,689 0.24 0.0104
2021-08-13 2021-06-30 13F WATERS COM 941848103 10,647 1,669 18.59 3,680 44.26 0.0108
2021-05-14 2021-03-31 13F WATERS COM 941848103 8,978 -268 -2.90 2,551 11.49 0.0080
2021-02-09 2020-12-31 13F WATERS COM 941848103 9,246 829 9.85 2,288 38.92 0.0085
2020-11-13 2020-09-30 13F WATERS COM 941848103 8,417 227 2.77 1,647 11.51 0.0076
2020-08-03 2020-06-30 13F WATERS COM 941848103 8,190 360 4.60 1,477 3.65 0.0079
2020-05-15 2020-03-31 13F WATERS COM 941848103 7,830 -3,494 -30.85 1,425 -46.15 0.0102
2020-02-12 2019-12-31 13F WATERS COM 941848103 11,324 2,003 21.49 2,646 27.15 0.0123
2019-11-12 2019-09-30 13F WATERS COM 941848103 9,321 220 2.42 2,081 6.23 0.0116
2019-08-13 2019-06-30 13F WATERS COM 941848103 9,101 -2,085 -18.64 1,959 -30.43 0.0117
2019-05-15 2019-03-31 13F WATERS COM 941848103 11,186 -104 -0.92 2,816 32.21 0.0168
2019-02-14 2018-12-31 13F WATERS COM 941848103 11,290 514 4.77 2,130 1.53 0.0149
2018-11-14 2018-09-30 13F WATERS COM 941848103 10,776 -1,173 -9.82 2,098 -9.30 0.0142
2018-08-13 2018-06-30 13F WATERS COM 941848103 11,949 -944 -7.32 2,313 -9.68 0.0155
2018-05-14 2018-03-31 13F WATERS COM 941848103 12,893 201 1.58 2,561 4.45 0.0167
2018-02-14 2017-12-31 13F WATERS COM 941848103 12,692 3,660 40.52 2,452 51.26 0.0170
2017-11-13 2017-09-30 13F WATERS COM 941848103 9,032 1,261 16.23 1,621 13.44 0.0149
2017-08-11 2017-06-30 13F WATERS COM 941848103 7,771 -248 -3.09 1,429 14.05 0.0142
2017-05-12 2017-03-31 13F/A-2 WATERS COM 941848103 8,019 48 0.60 1,253 16.99 0.0131
2017-05-08 2017-03-31 13F/A-1 WATERS COM 941848103 8,019 0 1,253 0.0131
2017-04-25 2017-03-31 13F WATERS COM 941848103 8,019 1,253
2017-02-13 2016-12-31 13F WATERS COM 941848103 7,971 1,534 23.83 1,071 5.00 0.0119
2016-11-10 2016-09-30 13F WATERS COM 941848103 6,437 -3,336 -34.13 1,020 -25.82 0.0142
2016-08-12 2016-06-30 13F WATERS COM 941848103 9,773 141 1.46 1,375 8.18 0.0177
2016-05-06 2016-03-31 13F WATERS COM 941848103 9,632 -14,644 -60.32 1,271 -61.10 0.0175
2016-02-05 2015-12-31 13F WATERS COM 941848103 24,276 -88 -0.36 3,267 13.44 0.0396
2015-11-06 2015-09-30 13F WATERS COM 941848103 24,364 11,160 84.52 2,880 69.91 0.0405
2015-08-11 2015-06-30 13F WATERS COM 941848103 13,204 -2,332 -15.01 1,695 -12.22 0.0235
2015-05-08 2015-03-31 13F WATERS COM 941848103 15,536 15,536 0.00 1,931 0.0227
2015-01-30 2014-12-31 13F WATERS COM 941848103 0 -14,726 -100.00 0 -100.00
2014-11-06 2014-09-30 13F WATERS COM 941848103 14,726 -1,487 -9.17 1,460 -13.76 0.0194
2014-08-08 2014-06-30 13F WATERS COM 941848103 16,213 -1,487 -8.40 1,693 -11.78 0.0219
2014-05-07 2014-03-31 13F WATERS COM 941848103 17,700 1,337 8.17 1,919 17.30 0.0240
2014-02-04 2013-12-31 13F WATERS COM 941848103 16,363 7,983 95.26 1,636 83.82 0.0244
2013-11-07 2013-09-30 13F WATERS COM 941848103 8,380 -5,807 -40.93 890 -37.28 0.0211
2013-07-25 2013-06-30 13F WATERS COM 941848103 14,187 14,187 1,419 0.0279
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.