Waters Corporation
MX ˙ BMV ˙ US9418481035
SecurityMX:WAT / Waters Corporation
InstitutionWASHINGTON TRUST Co
Latest Disclosed Ownership2,110 shares
Latest Disclosed Value $ 628,605
WASHINGTON TRUST Co ownership in WAT / Waters Corporation

On April 6, 2026 - WASHINGTON TRUST Co filed a 13F-HR form disclosing ownership of 2,110 shares of Waters Corporation (MX:WAT) valued at $628,605 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 8, 2025 disclosing 0 shares of Waters Corporation.

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)
2026-04-06 2026-03-31 13F WATERS Equities 941848103 2,110 2,110 629 0.0204
2025-08-08 2025-06-30 13F WATERS COM 941848103 0 -100.00 0
2025-04-25 2025-03-31 13F WATERS COM 941848103 100 -10 -9.09 37 -10.00 0.0014
2025-01-30 2024-12-31 13F Waters COM 941848103 110 0 0.00 41 2.56 0.0015
2024-10-25 2024-09-30 13F Waters COM 941848103 110 3 2.80 40 25.81 0.0014
2024-07-15 2024-06-30 13F Waters COM 941848103 107 -18 -14.40 31 -27.91 0.0011
2024-04-23 2024-03-31 13F Waters COM 941848103 125 0 0.00 43 4.88 0.0016
2024-01-18 2023-12-31 13F Waters COM 941848103 125 -2 -1.57 41 20.59 0.0016
2023-10-18 2023-09-30 13F Waters COM 941848103 127 -50 -28.25 35 -27.66 0.0015
2023-07-27 2023-06-30 13F Waters COM 941848103 177 -10 -5.35 47 -17.54 0.0020
2023-05-10 2023-03-31 13F/A-1 Waters COM 941848103 187 0 0.00 58 -10.94 0.0026
2023-05-04 2023-03-31 13F Waters COM 941848103 0 -187 0 0.0024
2023-07-27 2022-12-31 13F/A-1 Waters COM 941848103 187 0 0.00 64 28.00 0.0030
2023-02-08 2022-12-31 13F Waters COM 941848103 187 0 0 0.0000
2022-10-14 2022-09-30 13F Waters COM 941848103 187 0 0.00 50 -19.35 0.0025
2022-07-25 2022-06-30 13F Waters COM 941848103 187 0 0.00 62 6.90 0.0029
2022-05-05 2022-03-31 13F Waters COM 941848103 187 -10 -5.08 58 -20.55 0.0023
2022-02-09 2021-12-31 13F/A-1 Waters COM 941848103 197 -5 -2.48 73 1.39 0.0027
2022-02-09 2021-12-31 13F Waters COM 941848103 197 -5 73 0.0026
2021-11-09 2021-09-30 13F Waters COM 941848103 202 -98 -32.67 72 -30.77 0.0020
2021-08-05 2021-06-30 13F Waters COM 941848103 300 -110 -26.83 104 -11.11 0.0029
2021-04-28 2021-03-31 13F Waters COM 941848103 410 -34 -7.66 117 6.36 0.0036
2021-02-09 2020-12-31 13F Waters COM 941848103 444 0 0.00 110 26.44 0.0036
2020-11-05 2020-09-30 13F Waters COM 941848103 444 -152 -25.50 87 -17.14 0.0032
2020-08-04 2020-06-30 13F Waters COM 941848103 596 -100 -14.37 105 -17.32 0.0044
2020-05-07 2020-03-31 13F Waters COM 941848103 696 696 127 0.0061
2018-11-13 2018-09-30 13F Waters COM 941848103 0 -701 -100.00 0 -100.00
2018-08-10 2018-06-30 13F Waters COM 941848103 701 701 -84.52 135 -71.87 0.0072
2014-02-13 2013-12-31 13F WATERS COMMON STOCK 941848103 0 -4,527 -100.00 0 -100.00
2013-11-08 2013-09-30 13F WATERS COMMON STOCK 941848103 4,527 -37 -0.81 480 5.03 0.0385
2013-08-14 2013-06-30 13F WATERS COMMON STOCK 941848103 4,564 4,564 457 0.0386
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.