Waters Corporation
US ˙ NYSE ˙ US9418481035

SecurityWAT / Waters Corporation
InstitutionCommerce Bank
Latest Disclosed Ownership14,456 shares
Latest Disclosed Value $ 4,304,996
Commerce Bank reports 60.02% increase in ownership of WAT / Waters Corporation

On May 11, 2026 - Commerce Bank filed a 13F-HR form disclosing ownership of 14,456 shares of Waters Corporation (US:WAT) valued at $4,304,997 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 9,034 shares of Waters Corporation. This represents a change in shares of 60.02% during the quarter. The current value of the position is $5,489,955 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)
2026-05-11 2026-03-31 13F WATERS COM 941848103 14,456 5,422 60.02 4,305 25.44 0.0208
2026-02-13 2025-12-31 13F WATERS COM 941848103 9,034 -2,459 -21.40 3,431 -0.41 0.0189
2025-11-12 2025-09-30 13F WATERS COM 941848103 11,493 -277 -2.35 3,446 -16.14 0.0192
2025-08-07 2025-06-30 13F WATERS COM 941848103 11,770 670 6.04 4,108 0.42 0.0243
2025-05-08 2025-03-31 13F WATERS COM 941848103 11,100 -726 -6.14 4,091 -6.75 0.0261
2025-02-13 2024-12-31 13F WATERS COM 941848103 11,826 -1,096 -8.48 4,387 -5.66 0.0270
2024-11-08 2024-09-30 13F WATERS COM 941848103 12,922 -218 -1.66 4,650 21.98 0.0285
2024-08-12 2024-06-30 13F WATERS COM 941848103 13,140 254 1.97 3,812 -14.05 0.0247
2024-05-03 2024-03-31 13F WATERS COM 941848103 12,886 -1,066 -7.64 4,436 -3.44 0.0293
2024-02-09 2023-12-31 13F WATERS COM 941848103 13,952 -1,016 -6.79 4,593 11.92 0.0327
2023-11-14 2023-09-30 13F WATERS COM 941848103 14,968 -1,070 -6.67 4,104 -3.98 0.0323
2023-08-08 2023-06-30 13F WATERS COM 941848103 16,038 2,366 17.31 4,275 0.97 0.0320
2023-05-04 2023-03-31 13F WATERS COM 941848103 13,672 1,546 12.75 4,233 1.90 0.0332
2023-02-10 2022-12-31 13F WATERS COM 941848103 12,126 -1,466 -10.79 4,154 13.37 0.0337
2022-11-04 2022-09-30 13F WATERS COM 941848103 13,592 3,253 31.46 3,664 7.07 0.0318
2022-08-12 2022-06-30 13F WATERS COM 941848103 10,339 7,246 234.27 3,422 256.46 0.0279
2022-05-09 2022-03-31 13F WATERS COM 941848103 3,093 -323 -9.46 960 -24.59 0.0066
2022-02-14 2021-12-31 13F WATERS COM 941848103 3,416 155 4.75 1,273 9.27 0.0083
2021-11-09 2021-09-30 13F WATERS COM 941848103 3,261 -1,418 -30.31 1,165 -27.95 0.0082
2021-08-09 2021-06-30 13F WATERS COM 941848103 4,679 393 9.17 1,617 32.76 0.0115
2021-05-05 2021-03-31 13F WATERS COM 941848103 4,286 109 2.61 1,218 17.91 0.0093
2021-02-09 2020-12-31 13F WATERS COM 941848103 4,177 163 4.06 1,033 31.42 0.0084
2020-11-06 2020-09-30 13F WATERS COM 941848103 4,014 1,042 35.06 786 46.64 0.0071
2020-08-07 2020-06-30 13F WATERS COM 941848103 2,972 -1,111 -27.21 536 -27.86 0.0052
2020-05-08 2020-03-31 13F WATERS COM 941848103 4,083 628 18.18 743 -7.93 0.0090
2020-02-14 2019-12-31 13F WATERS COM 941848103 3,455 66 1.95 807 6.61 0.0077
2019-11-12 2019-09-30 13F WATERS COM 941848103 3,389 -873 -20.48 757 -17.45 0.0078
2019-08-07 2019-06-30 13F WATERS COM 941848103 4,262 94 2.26 917 -12.58 0.0103
2019-05-08 2019-03-31 13F WATERS COM 941848103 4,168 -216 -4.93 1,049 26.84 0.0124
2019-02-11 2018-12-31 13F WATERS COM 941848103 4,384 503 12.96 827 9.39 0.0105
2018-11-02 2018-09-30 13F WATERS COM 941848103 3,881 181 4.89 756 5.44 0.0090
2018-08-08 2018-06-30 13F WATERS COM 941848103 3,700 0 0.00 717 -2.45 0.0091
2018-05-03 2018-03-31 13F WATERS COM 941848103 3,700 -5 -0.13 735 2.65 0.0097
2018-02-12 2017-12-31 13F WATERS COM 941848103 3,705 40 1.09 716 8.81 0.0093
2017-11-07 2017-09-30 13F/A-1 WATERS COM 941848103 3,665 -228 -5.86 658 -8.10 0.0089
2017-11-07 2017-09-30 13F WATERS COM 941848103 3,893 716
2017-08-08 2017-06-30 13F WATERS COM 941848103 3,893 -31 -0.79 716 16.61 0.0100
2017-05-05 2017-03-31 13F WATERS COM 941848103 3,924 1,292 49.09 614 73.45 0.0088
2017-02-08 2016-12-31 13F WATERS COM 941848103 2,632 120 4.78 354 -11.06 0.0053
2016-11-03 2016-09-30 13F WATERS COM 941848103 2,512 26 1.05 398 13.71 0.0062
2016-08-09 2016-06-30 13F WATERS COM 941848103 2,486 76 3.15 350 10.06 0.0055
2016-04-27 2016-03-31 13F WATERS COM 941848103 2,410 0 0.00 318 -1.85 0.0053
2016-02-12 2015-12-31 13F WATERS COM 941848103 2,410 210 9.55 324 24.62 0.0054
2015-11-10 2015-09-30 13F WATERS COM 941848103 2,200 5 0.23 260 -7.47 0.0045
2015-08-03 2015-06-30 13F WATERS COM 941848103 2,195 0 0.00 281 2.93 0.0044
2015-05-06 2015-03-31 13F WATERS COM 941848103 2,195 0 0.00 273 10.53 0.0042
2015-02-11 2014-12-31 13F WATERS COM 941848103 2,195 0 0.00 247 13.82 0.0039
2014-11-06 2014-09-30 13F WATERS COM 941848103 2,195 149 7.28 217 1.40 0.0036
2014-08-05 2014-06-30 13F WATERS COM 941848103 2,046 118 6.12 214 2.39 0.0035
2014-05-09 2014-03-31 13F WATERS COM 941848103 1,928 1,928 -2.53 209 -0.48 0.0036
2014-02-14 2013-12-31 13F WATERS COM 941848103 0 -1,978 -100.00 0 -100.00
2013-11-05 2013-09-30 13F/A-1 WATERS COM 941848103 50,374 0 2,092 0.0377
2013-11-05 2013-09-30 13F/A-2 WATERS COM 941848103 1,978 1,978 210 0.0038
2013-11-04 2013-09-30 13F WATERS COM 941848103 50,374 2,092
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.