Waters Corporation
US ˙ NYSE ˙ US9418481035

SecurityWAT / Waters Corporation
InstitutionNatixis
Latest Disclosed Ownership16,488 shares
Latest Disclosed Value $ 4,910,126
Natixis reports 9.91% increase in ownership of WAT / Waters Corporation

On May 14, 2026 - Natixis filed a 13F-HR form disclosing ownership of 16,488 shares of Waters Corporation (US:WAT) valued at $4,910,126 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 15,001 shares of Waters Corporation. This represents a change in shares of 9.91% during the quarter. The current value of the position is $6,261,648 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)
2026-05-14 2026-03-31 13F WATERS COM 941848103 16,488 1,487 9.91 4,910 -13.81 0.0159
2026-02-13 2025-12-31 13F WATERS COM 941848103 15,001 -6,096 -28.90 5,698 -9.93 0.0202
2025-11-14 2025-09-30 13F WATERS COM 941848103 21,097 18,919 868.64 6,325 732.24 0.0293
2025-08-13 2025-06-30 13F WATERS COM 941848103 2,178 869 66.39 760 60.00 0.0034
2025-07-18 2025-03-31 13F/A-1 WATERS COM 941848103 1,309 1,309 476 0.0026
2025-05-14 2025-03-31 13F WATERS COM 941848103 1,309 1,309 476 0.0026
2025-02-13 2024-12-31 13F WATERS COM 941848103 0 -3,855 -100.00 0 -100.00
2024-11-13 2024-09-30 13F WATERS COM 941848103 3,855 3,855 1,387 0.0078
2023-11-14 2023-09-30 13F WATERS COM 941848103 0 -3,613 -100.00 0 -100.00
2023-08-11 2023-06-30 13F WATERS COM 941848103 3,613 1,587 78.33 963 53.59 0.0078
2023-05-12 2023-03-31 13F WATERS COM 941848103 2,026 -6,024 -74.83 627 -77.26 0.0057
2023-02-24 2022-12-31 13F/A-1 WATERS COM 941848103 8,050 4,169 107.42 2,758 163.32 0.0155
2023-02-13 2022-12-31 13F Waters COM 941848103 6,728 2,847 2,305 0.0000
2022-11-14 2022-09-30 13F Waters COM 941848103 3,881 1,071 38.11 1,047 12.58 0.0049
2022-08-12 2022-06-30 13F Waters COM 941848103 2,810 -717 -20.33 930 -15.07 0.0034
2022-05-13 2022-03-31 13F WATERS COM 941848103 3,527 -5,795 -62.16 1,095 -68.47 0.0038
2022-02-14 2021-12-31 13F WATERS COM 941848103 9,322 5,386 136.84 3,473 147.01 0.0119
2021-11-12 2021-09-30 13F WATERS COM 941848103 3,936 3,936 1,406 0.0049
2021-08-13 2021-06-30 13F WATERS CO 941848103 0 -5,029 -100.00 0 -100.00
2021-05-14 2021-03-31 13F WATERS CO 941848103 5,029 5,029 1,429 0.0047
2021-02-12 2020-12-31 13F WATERS COM 941848103 0 -7,847 -100.00 0 -100.00
2020-11-12 2020-09-30 13F WATERS COM 941848103 7,847 -73,503 -90.35 1,536 -89.53 0.0113
2020-08-13 2020-06-30 13F WATERS COM 941848103 81,350 27,184 50.19 14,676 48.83 0.1140
2020-05-14 2020-03-31 13F WATERS COM 941848103 54,166 16,722 44.66 9,861 12.93 0.0775
2020-02-14 2019-12-31 13F WATERS COM 941848103 37,444 37,444 8,732 0.0541
2019-05-15 2019-03-31 13F WATERS COM 941848103 0 -15,999 -100.00 0 -100.00
2019-02-14 2018-12-31 13F/A-1 WATERS COM 941848103 15,999 -5,467 -25.47 3,018 -27.78 0.0249
2019-02-14 2018-12-31 13F WATERS COM 941848103 15,999 -5,467 3,018
2018-11-14 2018-09-30 13F WATERS COM 941848103 21,466 4,227 24.52 4,179 25.23 0.0242
2018-08-14 2018-06-30 13F WATERS COM 941848103 17,239 -16,734 -49.26 3,337 -50.56 0.0177
2018-05-15 2018-03-31 13F WATERS COM 941848103 33,973 31,873 1,517.76 6,749 1,562.32 0.0414
2018-02-14 2017-12-31 13F WATERS COM 941848103 2,100 -18,125 -89.62 406 -88.82 0.0031
2017-11-14 2017-09-30 13F WATERS COM 941848103 20,225 2,647 15.06 3,631 12.35 0.0335
2017-08-14 2017-06-30 13F WATERS COM 941848103 17,578 4,247 31.86 3,232 55.09 0.0367
2017-05-15 2017-03-31 13F WATERS COM 941848103 13,331 -2,050 -13.33 2,084 0.82 0.0260
2017-02-14 2016-12-31 13F WATERS COM 941848103 15,381 9,479 160.61 2,067 121.07 0.0213
2016-11-14 2016-09-30 13F WATERS COM 941848103 5,902 5,902 935 0.0108
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.