Waters Corporation
US ˙ NYSE ˙ US9418481035

SecurityWAT / Waters Corporation
InstitutionStandard Life Aberdeen plc
Latest Disclosed Ownership125,534 shares
Latest Disclosed Value $ 37,384,025
Standard Life Aberdeen plc reports 69.96% increase in ownership of WAT / Waters Corporation

On April 29, 2026 - Standard Life Aberdeen plc filed a 13F-HR form disclosing ownership of 125,534 shares of Waters Corporation (US:WAT) valued at $37,384,025 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 73,863 shares of Waters Corporation. This represents a change in shares of 69.96% during the quarter. The current value of the position is $45,865,102 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)
2026-04-29 2026-03-31 13F WATERS COM 941848103 125,534 51,671 69.96 37,384 33.25 0.0328
2026-01-16 2025-12-31 13F WATERS COM 941848103 73,863 -2,721 -3.55 28,055 26.57 0.0242
2025-11-07 2025-09-30 13F WATERS COM 941848103 76,584 -235 -0.31 22,166 -17.33 0.0351
2025-07-24 2025-06-30 13F WATERS COM 941848103 76,819 9,376 13.90 26,813 9.98 0.0456
2025-05-13 2025-03-31 13F WATERS COM 941848103 67,443 -188,672 -73.67 24,379 -74.34 0.0475
2025-01-24 2024-12-31 13F WATERS COM 941848103 256,115 -7,448 -2.83 94,992 0.27 0.1783
2024-10-25 2024-09-30 13F WATERS COM 941848103 263,563 7,611 2.97 94,738 27.58 0.1737
2024-08-09 2024-06-30 13F WATERS COM 941848103 255,952 12,620 5.19 74,257 -11.35 0.1423
2024-05-09 2024-03-31 13F WATERS COM 941848103 243,332 13,934 6.07 83,762 10.91 0.1642
2024-01-31 2023-12-31 13F WATERS COM 941848103 229,398 27,547 13.65 75,525 36.45 0.1637
2023-11-07 2023-09-30 13F WATERS COM 941848103 201,851 14,522 7.75 55,350 10.85 0.1412
2024-06-20 2023-06-30 13F/A-1 WATERS COM 941848103 187,329 15,416 8.97 49,931 -6.20 0.1162
2023-08-04 2023-06-30 13F WATERS COM 941848103 187,329 15,416 49,931 0.1162
2024-06-20 2023-03-31 13F/A-1 WATERS COM 941848103 171,913 -7,619 -4.24 53,229 -13.45 0.1332
2023-04-28 2023-03-31 13F WATERS COM 941848103 171,913 -7,619 53,229 0.1332
2024-06-20 2022-12-31 13F/A-1 WATERS COM 941848103 179,532 17,109 10.53 61,504 40.49 0.1672
2023-02-10 2022-12-31 13F WATERS COM 941848103 179,532 17,109 61,504 0.1672
2022-11-10 2022-09-30 13F WATERS COM 941848103 162,423 107,393 195.15 43,777 140.68 0.1303
2022-08-05 2022-06-30 13F WATERS COM 941848103 55,030 7,675 16.21 18,189 20.35 0.0572
2022-05-04 2022-03-31 13F WATERS COM 941848103 47,355 9,998 26.76 15,114 8.59 0.0386
2022-02-10 2021-12-31 13F/A-1 WATERS COM 941848103 37,357 5,815 18.44 13,919 22.01 0.0306
2022-02-08 2021-12-31 13F WATERS COM 941848103 37,357 5,815 13,919 0.0100
2021-11-15 2021-09-30 13F WATERS COM 941848103 31,542 9,022 40.06 11,408 46.58 0.0257
2021-08-10 2021-06-30 13F WATERS COM 941848103 22,520 -59,815 -72.65 7,783 -66.75 0.0170
2021-05-06 2021-03-31 13F WATERS COM 941848103 82,335 62,080 306.49 23,405 367.07 0.0532
2021-02-10 2020-12-31 13F WATERS COM 941848103 20,255 1,075 5.60 5,011 33.52 0.0122
2020-10-21 2020-09-30 13F WATERS COM 941848103 19,180 -3,271 -14.57 3,753 -7.33 0.0100
2020-08-10 2020-06-30 13F WATERS COM 941848103 22,451 -2,159 -8.77 4,050 -9.60 0.0110
2020-05-13 2020-03-31 13F WATERS COM 941848103 24,610 -900 -3.53 4,480 -24.86 0.0142
2020-02-18 2019-12-31 13F WATERS COM 941848103 25,510 -2,541 -9.06 5,962 -4.79 0.0144
2019-11-13 2019-09-30 13F WATERS COM 941848103 28,051 -41,025 -59.39 6,262 -57.88 0.0156
2019-08-13 2019-06-30 13F WATERS COM 941848103 69,076 -14,167 -17.02 14,868 -29.04 0.0330
2019-05-14 2019-03-31 13F WATERS COM 941848103 83,243 -29,009 -25.84 20,953 0.79 0.0454
2019-02-12 2018-12-31 13F WATERS COM 941848103 112,252 -15,032 -11.81 20,789 -16.11 0.0493
2018-11-20 2018-09-30 13F/A-1 WATERS COM 941848103 127,284 22 0.02 24,782 0.58 0.0462
2018-11-13 2018-09-30 13F WATERS COM 941848103 127,284 22 24,782
2018-08-09 2018-06-30 13F WATERS COM 941848103 127,262 5,683 4.67 24,640 2.01 0.0473
2018-05-15 2018-03-31 13F WATERS COM 941848103 121,579 32,648 36.71 24,155 40.55 0.0479
2018-02-12 2017-12-31 13F WATERS COM 941848103 88,931 47,158 112.89 17,186 129.15 0.0329
2017-11-14 2017-09-30 13F WATERS COM 941848103 41,773 41,773 7,500 0.0137
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.