Waters Corporation
US ˙ NYSE ˙ US9418481035

SecurityWAT / Waters Corporation
InstitutionWetherby Asset Management Inc
Latest Disclosed Ownership1,496 shares
Latest Disclosed Value $ 448,516
Wetherby Asset Management Inc reports 6.15% decrease in ownership of WAT / Waters Corporation

On November 14, 2025 - Wetherby Asset Management Inc filed a 13F-HR form disclosing ownership of 1,496 shares of Waters Corporation (US:WAT) valued at $448,516 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 1,594 shares of Waters Corporation. This represents a change in shares of -6.15% during the quarter. The current value of the position is $546,579 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)
2025-11-14 2025-09-30 13F WATERS COM 941848103 1,496 -98 -6.15 449 -19.42 0.0183
2025-08-14 2025-06-30 13F WATERS COM 941848103 1,594 12 0.76 556 -5.12 0.0248
2025-02-14 2024-12-31 13F WATERS COM 941848103 1,582 -18 -1.12 587 1.91 0.0281
2024-11-14 2024-09-30 13F WATERS COM 941848103 1,600 15 0.95 576 25.27 0.0263
2024-08-14 2024-06-30 13F WATERS COM 941848103 1,585 -7 -0.44 460 -16.24 0.0217
2024-05-15 2024-03-31 13F WATERS COM 941848103 1,592 -1 -0.06 548 4.58 0.0261
2024-02-14 2023-12-31 13F WATERS COM 941848103 1,593 -166 -9.44 524 8.71 0.0273
2023-11-14 2023-09-30 13F WATERS COM 941848103 1,759 165 10.35 482 13.68 0.0273
2023-08-14 2023-06-30 13F WATERS COM 941848103 1,594 -25 -1.54 425 -15.37 0.0229
2023-05-12 2023-03-31 13F WATERS COM 941848103 1,619 -15 -0.92 501 -10.38 0.0293
2023-02-14 2022-12-31 13F WATERS COM 941848103 1,634 58 3.68 560 31.53 0.0360
2022-11-14 2022-09-30 13F WATERS COM 941848103 1,576 -82 -4.95 425 -22.59 0.0300
2022-08-15 2022-06-30 13F WATERS COM 941848103 1,658 13 0.79 549 7.44 0.0375
2022-05-16 2022-03-31 13F WATERS COM 941848103 1,645 46 2.88 511 -14.26 0.0293
2022-02-14 2021-12-31 13F WATERS COM 941848103 1,599 -3 -0.19 596 4.20 0.0335
2021-11-15 2021-09-30 13F WATERS COM 941848103 1,602 4 0.25 572 3.62 0.0353
2021-08-16 2021-06-30 13F WATERS COM 941848103 1,598 4 0.25 552 21.85 0.0337
2021-05-14 2021-03-31 13F WATERS COM 941848103 1,594 -63 -3.80 453 10.49 0.0345
2021-02-11 2020-12-31 13F WATERS COM 941848103 1,657 1,577 1,971.25 410 2,462.50 0.0278
2020-12-16 2020-09-30 13F/A-01 WATERS COM 941848103 1,570 -83 307 0.0281
2020-12-16 2020-09-30 13F/A-02 WATERS COM 941848103 80 -1,573 -95.16 16 -94.63 0.0481
2020-11-13 2020-09-30 13F WATERS COM 941848103 1,692 39 331 21,054.5064
2020-08-14 2020-06-30 13F WATERS COM 941848103 1,653 -114 -6.45 298 -7.17 0.0282
2020-05-06 2020-03-31 13F WATERS COM 941848103 1,767 43 2.49 321 -20.35 0.0360
2020-01-28 2019-12-31 13F WATERS COM 941848103 1,724 -7 -0.40 403 4.40 0.0397
2019-10-31 2019-09-30 13F WATERS COM 941848103 1,731 17 0.99 386 4.61 0.0403
2019-07-25 2019-06-30 13F WATERS COM 941848103 1,714 -92 -5.09 369 -18.90 0.0404
2019-07-25 2019-03-31 13F/A-1 WATERS COM 941848103 1,806 -864 -32.36 455 -9.72 0.0567
2019-05-09 2019-03-31 13F WATERS COM 941848103 1,806 -864 455
2019-01-30 2018-12-31 13F WATERS COM 941848103 2,670 94 3.65 504 0.60 0.0713
2018-11-07 2018-09-30 13F WATERS COM 941848103 2,576 -64 -2.42 501 -1.96 0.0619
2018-07-24 2018-06-30 13F WATERS COM 941848103 2,640 -2 -0.08 511 -2.67 0.0692
2018-05-04 2018-03-31 13F WATERS COM 941848103 2,642 0 0.00 525 2.94 0.0725
2018-02-09 2017-12-31 13F WATERS COM 941848103 2,642 185 7.53 510 15.65 0.0708
2017-11-13 2017-09-30 13F WATERS COM 941848103 2,457 -269 -9.87 441 -11.98 0.0656
2017-08-01 2017-06-30 13F WATERS COM 941848103 2,726 74 2.79 501 20.72 0.0852
2017-04-27 2017-03-31 13F WATERS COM 941848103 2,652 97 3.80 415 20.64 0.0746
2017-02-08 2016-12-31 13F WATERS COM 941848103 2,555 140 5.80 344 -10.18 0.0674
2016-11-14 2016-09-30 13F WATERS COM 941848103 2,415 71 3.03 383 16.06 0.0775
2016-08-10 2016-06-30 13F WATERS COM 941848103 2,344 -37 -1.55 330 5.10 0.0732
2016-05-10 2016-03-31 13F WATERS COM 941848103 2,381 -68 -2.78 314 -4.56 0.0740
2016-02-08 2015-12-31 13F WATERS COM 941848103 2,449 65 2.73 329 17.08 0.0789
2015-11-12 2015-09-30 13F WATERS COM 941848103 2,384 87 3.79 281 -4.75 0.0720
2015-08-12 2015-06-30 13F WATERS COM 941848103 2,297 -4 -0.17 295 3.15 0.0709
2015-05-08 2015-03-31 13F WATERS COM 941848103 2,301 79 3.56 286 14.40 0.0696
2015-02-12 2014-12-31 13F WATERS COM 941848103 2,222 21 0.95 250 14.68 0.0629
2014-11-03 2014-09-30 13F WATERS COM 941848103 2,201 -24 -1.08 218 -6.44 0.0608
2014-08-01 2014-06-30 13F WATERS COM 941848103 2,225 116 5.50 233 1.75 0.0658
2014-05-05 2014-03-31 13F/A-1 WATERS COM 941848103 2,109 -27 -1.26 229 7.51 0.0656
2014-04-30 2014-03-31 13F WATERS COM 941848103 2,109 229
2014-01-29 2013-12-31 13F WATERS COM 941848103 2,136 0 0.00 213 -6.17 0.0607
2013-10-29 2013-09-30 13F WATERS COM 941848103 2,136 0 0.00 227 6.57 0.0708
2013-07-24 2013-06-30 13F WATERS COM 941848103 2,136 2,136 213 0.0742
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.