Waters Corporation
US ˙ NYSE ˙ US9418481035

SecurityWAT / Waters Corporation
InstitutionShell Asset Management Co
Latest Disclosed Ownership2,993 shares
Latest Disclosed Value $ 897
Shell Asset Management Co reports 42.96% decrease in ownership of WAT / Waters Corporation

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 2,993 shares of Waters Corporation (US:WAT) valued at $897,331 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 5,247 shares of Waters Corporation. This represents a change in shares of -42.96% during the quarter. The current value of the position is $1,126,775 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)
2025-11-07 2025-09-30 13F WATERS COM 941848103 2,993 -2,254 -42.96 1 -100.00 0.0901
2025-07-23 2025-06-30 13F WATERS COM 941848103 5,247 2,716 107.31 2 0.0632
2025-05-14 2025-03-31 13F WATERS COM 941848103 2,531 0 0.00 1 0.0443
2025-02-14 2024-12-31 13F WATERS COM 941848103 2,531 -68 -2.62 1 0.0410
2024-11-07 2024-09-30 13F WATERS COM 941848103 2,599 0 0.00 1 0.0412
2024-07-25 2024-03-31 13F WATERS COM 941848103 2,599 -2,203 -45.88 1 -100.00 0.0343
2024-02-14 2023-12-31 13F WATERS COM 941848103 4,802 -1,396 -22.52 2 0.00 0.0730
2023-11-08 2023-09-30 13F WATERS COM 941848103 6,198 -30 -0.48 2 0.00 0.0702
2023-07-28 2023-06-30 13F WATERS COM 941848103 6,228 -1,354 -17.86 2 -50.00 0.0655
2023-05-15 2023-03-31 13F WATERS COM 941848103 7,582 -92 -1.20 2 0.00 0.0974
2023-02-07 2022-12-31 13F WATERS COM 941848103 7,674 -1,435 -15.75 3 -99.92 0.1152
2022-11-14 2022-09-30 13F WATERS COM 941848103 9,109 -2,238 -19.72 2,455 -34.64 0.0957
2022-08-09 2022-06-30 13F WATERS COM 941848103 11,347 -188 -1.63 3,756 4.92 0.1111
2022-05-04 2022-03-31 13F WATERS COM 941848103 11,535 251 2.22 3,580 -14.84 0.0845
2022-02-09 2021-12-31 13F WATERS COM 941848103 11,284 -1,537 -11.99 4,204 -8.23 0.0863
2021-11-04 2021-09-30 13F WATERS COM 941848103 12,821 -275 -2.10 4,581 1.22 0.1028
2021-08-12 2021-06-30 13F WATERS COM 941848103 13,096 506 4.02 4,526 26.50 0.0877
2021-05-10 2021-03-31 13F WATERS COM 941848103 12,590 4,893 63.57 3,578 87.92 0.0716
2021-02-16 2020-12-31 13F WATERS COM 941848103 7,697 4,728 159.25 1,904 227.71 0.0393
2020-11-13 2020-09-30 13F WATERS COM 941848103 2,969 -230 -7.19 581 0.69 0.0135
2020-08-10 2020-06-30 13F WATERS COM 941848103 3,199 -1,301 -28.91 577 -29.55 0.0144
2020-05-11 2020-03-31 13F WATERS COM 941848103 4,500 -200 -4.26 819 -25.41 0.0228
2020-02-13 2019-12-31 13F WATERS COM 941848103 4,700 273 6.17 1,098 11.13 0.0237
2019-11-12 2019-09-30 13F WATERS COM 941848103 4,427 0 0.00 988 3.67 0.0226
2019-08-12 2019-06-30 13F WATERS COM 941848103 4,427 -619 -12.27 953 -24.96 0.0211
2019-05-09 2019-03-31 13F WATERS COM 941848103 5,046 0 0.00 1,270 33.40 0.0280
2019-02-13 2018-12-31 13F WATERS COM 941848103 5,046 -747 -12.89 952 -15.60 0.0237
2018-11-13 2018-09-30 13F WATERS COM 941848103 5,793 -972 -14.37 1,128 -13.89 0.0223
2018-08-10 2018-06-30 13F WATERS COM 941848103 6,765 -9,267 -57.80 1,310 -58.87 0.0269
2018-05-14 2018-03-31 13F WATERS COM 941848103 16,032 0 0.00 3,185 2.84 0.0634
2018-02-09 2017-12-31 13F WATERS COM 941848103 16,032 -2,239 -12.25 3,097 -5.58 0.0615
2017-10-20 2017-09-30 13F/A-1 WATERS COM 941848103 18,271 -845 -4.42 3,280 -6.66 0.0729
2017-10-18 2017-09-30 13F WATERS COM 941848103 12,079 -7,037 1,197
2017-07-26 2017-06-30 13F WATERS COM 941848103 19,116 -615 -3.12 3,514 13.94 0.0872
2017-04-26 2017-03-31 13F WATERS COM 941848103 19,731 932 4.96 3,084 22.09 0.0787
2017-01-10 2016-12-31 13F WATERS COM 941848103 18,799 -29,198 -60.83 2,526 -66.79 0.0683
2016-10-28 2016-09-30 13F WATERS COM 941848103 47,997 4,612 10.63 7,607 24.66 0.1821
2016-07-25 2016-06-30 13F WATERS COM 941848103 43,385 38,751 836.23 6,102 898.69 0.1416
2016-05-11 2016-03-31 13F WATERS COM 941848103 4,634 185 4.16 611 2.00 0.0146
2016-02-05 2015-12-31 13F WATERS COM 941848103 4,449 -7,630 -63.17 599 -49.96 0.0141
2015-10-13 2015-09-30 13F WATERS COM 941848103 12,079 5,588 86.09 1,197 43.70 0.0190
2015-07-30 2015-06-30 13F WATERS COM 941848103 6,491 -1,425 -18.00 833 -15.35 0.0167
2015-05-07 2015-03-31 13F WATERS COM 941848103 7,916 7,916 0.00 984 0.0171
2015-02-04 2014-12-31 13F WATERS COM 941848103 0 -12,079 -100.00 0 -100.00
2014-10-24 2014-09-30 13F WATERS COM 941848103 12,079 -2,670 -18.10 1,197 -22.27 0.0186
2014-08-08 2014-06-30 13F WATERS COM 941848103 14,749 283 1.96 1,540 -1.79 0.0237
2014-05-07 2014-03-31 13F WATERS COM 941848103 14,466 0 0.00 1,568 8.36 0.0261
2014-02-03 2013-12-31 13F/A-1 WATERS COM 941848103 14,466 -5,701 -28.27 1,447 -32.45 0.0246
2014-01-27 2013-12-31 13F WATERS COM 941848103 14,466 1,447
2013-10-28 2013-09-30 13F WATERS COM 941848103 20,167 -246 -1.21 2,142 4.90 0.0393
2013-08-01 2013-06-30 13F WATERS COM 941848103 20,413 20,413 2,042 0.0389
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.