Waters Corporation
US ˙ NYSE ˙ US9418481035

SecurityWAT / Waters Corporation
InstitutionBokf, Na
Latest Disclosed Ownership3,062 shares
Latest Disclosed Value $ 911,864
Bokf, Na reports 75.17% increase in ownership of WAT / Waters Corporation

On May 8, 2026 - Bokf, Na filed a 13F-HR form disclosing ownership of 3,062 shares of Waters Corporation (US:WAT) valued at $911,864 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 1,748 shares of Waters Corporation. This represents a change in shares of 75.17% during the quarter. The current value of the position is $1,162,856 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)
2026-05-08 2026-03-31 13F WATERS common 941848103 3,062 1,314 75.17 912 37.41 0.0107
2026-02-03 2025-12-31 13F WATERS common 941848103 1,748 -145 -7.66 664 16.93 0.0102
2025-11-13 2025-09-30 13F WATERS common 941848103 1,893 3 0.16 568 -13.96 0.0085
2025-08-12 2025-06-30 13F WATERS common 941848103 1,890 0 0.00 660 -5.32 0.0107
2025-05-13 2025-03-31 13F WATERS common 941848103 1,890 0 0.00 697 -3.06 0.0123
2025-02-14 2024-12-31 13F WATERS common 941848103 1,890 -173 -8.39 719 -1.78 0.0121
2024-11-14 2024-09-30 13F WATERS common 941848103 2,063 0 0.00 731 22.24 0.0130
2024-08-08 2024-06-30 13F WATERS COM 941848103 2,063 -36 -1.72 599 -17.29 0.0107
2024-05-15 2024-03-31 13F WATERS COM 941848103 2,099 -2 -0.10 723 4.63 0.0132
2024-02-14 2023-12-31 13F WATERS COM 941848103 2,101 2 0.10 692 38.20 0.0135
2023-11-14 2023-09-30 13F WATERS COM 941848103 2,099 -4,949 -70.22 501 -73.38 0.0110
2023-08-21 2023-06-30 13F WATERS COM 941848103 7,048 196 2.86 1,879 -11.46 0.0383
2023-05-11 2023-03-31 13F WATERS COM 941848103 6,852 -121 -1.74 2,122 -11.18 0.0444
2023-02-13 2022-12-31 13F WATERS COM 941848103 6,973 98 1.43 2,389 28.87 0.0441
2022-11-14 2022-09-30 13F WATERS COM 941848103 6,875 10 0.15 1,853 -18.48 0.0375
2022-08-11 2022-06-30 13F WATERS COM 941848103 6,865 7 0.10 2,273 6.81 0.0436
2022-05-13 2022-03-31 13F WATERS COM 941848103 6,858 -159 -2.27 2,128 -18.62 0.0351
2022-03-11 2021-12-31 13F WATERS COM 941848103 7,017 101 1.46 2,615 5.83 0.0405
2021-11-10 2021-09-30 13F WATERS COM 941848103 6,916 182 2.70 2,471 29.10 0.0425
2021-04-21 2021-03-31 13F WATERS COM 941848103 6,734 -1,290 -16.08 1,914 -3.58 0.0348
2021-02-12 2020-12-31 13F WATERS COM 941848103 8,024 -3,762 -31.92 1,985 -13.92 0.0379
2020-10-30 2020-09-30 13F WATERS COM 941848103 11,786 2,697 29.67 2,306 40.70 0.0507
2020-08-12 2020-06-30 13F WATERS COM 941848103 9,089 -75 -0.82 1,639 -1.74 0.0385
2020-05-13 2020-03-31 13F WATERS COM 941848103 9,164 1,113 13.82 1,668 -11.32 0.0481
2020-02-12 2019-12-31 13F WATERS COM 941848103 8,051 -532 -6.20 1,881 -1.83 0.0425
2019-11-13 2019-09-30 13F WATERS COM 941848103 8,583 -250 -2.83 1,916 0.79 0.0461
2019-08-14 2019-06-30 13F WATERS COM 941848103 8,833 -831 -8.60 1,901 -21.83 0.0457
2019-05-15 2019-03-31 13F WATERS COM 941848103 9,664 -176 -1.79 2,432 31.03 0.0582
2019-02-13 2018-12-31 13F WATERS COM 941848103 9,840 180 1.86 1,856 -1.28 0.0531
2018-11-13 2018-09-30 13F WATERS COM 941848103 9,660 -2,793 -22.43 1,880 -22.02 0.0472
2018-08-13 2018-06-30 13F WATERS COM 941848103 12,453 -2,065 -14.22 2,411 -16.40 0.0649
2018-05-14 2018-03-31 13F WATERS COM 941848103 14,518 90 0.62 2,884 3.44 0.0819
2018-02-14 2017-12-31 13F WATERS COM 941848103 14,428 53 0.37 2,788 8.06 0.0768
2017-11-14 2017-09-30 13F WATERS COM 941848103 14,375 -7,465 -34.18 2,580 -35.74 0.0749
2017-08-14 2017-06-30 13F WATERS COM 941848103 21,840 -608 -2.71 4,015 14.42 0.1263
2017-05-15 2017-03-31 13F WATERS COM 941848103 22,448 -1,565 -6.52 3,509 8.74 0.1095
2017-02-14 2016-12-31 13F WATERS COM 941848103 24,013 -369 -1.51 3,227 -16.49 0.1062
2016-11-10 2016-09-30 13F WATERS COM 941848103 24,382 166 0.69 3,864 13.45 0.1279
2016-08-12 2016-06-30 13F WATERS COM 941848103 24,216 588 2.49 3,406 9.27 0.1200
2016-05-13 2016-03-31 13F WATERS COM 941848103 23,628 -813 -3.33 3,117 -5.23 0.1127
2016-02-09 2015-12-31 13F WATERS COM 941848103 24,441 849 3.60 3,289 17.97 0.1189
2015-11-13 2015-09-30 13F WATERS COM 941848103 23,592 17,369 279.11 2,788 248.94 0.1049
2015-08-13 2015-06-30 13F WATERS COM 941848103 6,223 3,037 95.32 799 101.77 0.0271
2015-05-14 2015-03-31 13F WATERS COM 941848103 3,186 560 21.33 396 33.78 0.0133
2015-02-12 2014-12-31 13F WATERS COM 941848103 2,626 -710 -21.28 296 -10.30 0.0102
2014-11-13 2014-09-30 13F WATERS COM 941848103 3,336 -450 -11.89 330 -16.67 0.0110
2014-08-14 2014-06-30 13F WATERS COM 941848103 3,786 -437 -10.35 396 -13.54 0.0127
2014-05-14 2014-03-31 13F WATERS COM 941848103 4,223 -13,529 -76.21 458 -74.20 0.0152
2014-02-14 2013-12-31 13F WATERS COM 941848103 17,752 -7,852 -30.67 1,775 -34.74 0.0595
2013-11-12 2013-09-30 13F WATERS COM 941848103 25,604 20,195 373.36 2,720 402.77 0.0988
2013-08-14 2013-06-30 13F WATERS COM 941848103 5,409 5,409 541 0.0204
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.