Waters Corporation
MX ˙ BMV ˙ US9418481035
SecurityMX:WAT / Waters Corporation
InstitutionBaird Financial Group, Inc.
Latest Disclosed Ownership32,914 shares
Latest Disclosed Value $ 9,801,790
Baird Financial Group, Inc. reports 13.87% increase in ownership of WAT / Waters Corporation

On May 14, 2026 - Baird Financial Group, Inc. filed a 13F-HR form disclosing ownership of 32,914 shares of Waters Corporation (MX:WAT) valued at $9,801,790 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 28,904 shares of Waters Corporation. This represents a change in shares of 13.87% during the quarter.

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 32,914 4,010 13.87 9,802 -10.72 0.0082
2026-02-13 2025-12-31 13F WATERS CORP COM COMMON 941848103 28,904 -293 -1.00 10,979 25.42 0.0171
2025-11-13 2025-09-30 13F WATERS COMMON 941848103 29,197 -4,370 -13.02 8,754 -25.29 0.0141
2025-08-13 2025-06-30 13F WATERS CORP COM COMMON 941848103 33,567 -2,568 -7.11 11,716 -12.03 0.0205
2025-05-15 2025-03-31 13F WATERS CORP COM COMMON 941848103 36,135 2,341 6.93 13,318 6.24 0.0256
2025-02-14 2024-12-31 13F WATERS COMMON 941848103 33,794 -96 -0.28 12,537 2.79 0.0240
2024-11-14 2024-09-30 13F WATERS COMMON 941848103 33,890 520 1.56 12,197 25.98 0.0237
2024-08-14 2024-06-30 13F WATERS COMMON 941848103 33,370 2,119 6.78 9,681 -10.00 0.0201
2024-05-14 2024-03-31 13F WATERS COMMON 941848103 31,251 3,427 12.32 10,758 17.43 0.0226
2024-02-14 2023-12-31 13F WATERS COMMON 941848103 27,824 210 0.76 9,160 20.97 0.0209
2023-11-13 2023-09-30 13F WATERS COMMON 941848103 27,614 178 0.65 7,572 3.56 0.0207
2023-08-11 2023-06-30 13F WATERS COMMON 941848103 27,436 -3,808 -12.19 7,313 -24.42 0.0193
2023-05-15 2023-03-31 13F WATERS COMMON 941848103 31,244 2,023 6.92 9,674 96,640.00 0.0239
2023-02-13 2022-12-31 13F WATERS COMMON 941848103 29,221 3,446 13.37 10 -99.86 0.0264
2022-11-15 2022-09-30 13F WATERS COMMON 941848103 25,775 93 0.36 6,947 -18.27 0.0205
2022-08-08 2022-06-30 13F WATERS COMMON 941848103 25,682 -16 -0.06 8,500 6.57 0.0236
2022-05-13 2022-03-31 13F WATERS COMMON 941848103 25,698 -3,484 -11.94 7,976 -26.64 0.0197
2022-02-09 2021-12-31 13F WATERS CORP COM COMMON 941848103 29,182 -1,325 -4.34 10,873 -0.25 0.0254
2021-11-12 2021-09-30 13F WATERS CORP COM COMMON 941848103 30,507 -70 -0.23 10,900 3.14 0.0279
2021-08-11 2021-06-30 13F WATERS CORP COM COMMON 941848103 30,577 -564 -1.81 10,568 19.41 0.0275
2021-05-13 2021-03-31 13F WATERS CORP COM COMMON 941848103 31,141 467 1.52 8,850 16.62 0.0248
2021-02-11 2020-12-31 13F WATERS CORP COM COMMON 941848103 30,674 13 0.04 7,589 26.48 0.0227
2020-11-12 2020-09-30 13F WATERS CORP COM COMMON 941848103 30,661 -487 -1.56 6,000 6.78 0.0206
2020-10-22 2020-06-30 13F/A-1 WATERS CORP COM COMMON 941848103 31,148 -996 -3.10 5,619 -3.98 0.0212
2020-08-14 2020-06-30 13F WATERS CORP COM COMMON 941848103 31,379 -765 6,038 11,965.9442
2020-05-14 2020-03-31 13F WATERS CORP COM COMMON 941848103 32,144 -850 -2.58 5,852 -24.09 0.0267
2020-02-14 2019-12-31 13F WATERS CORP COM COMMON 941848103 32,994 -591 -1.76 7,709 2.83 0.0277
2019-11-14 2019-09-30 13F WATERS Common 941848103 33,585 412 1.24 7,497 4.99 0.0295
2019-08-14 2019-06-30 13F WATERS COMMON 941848103 33,173 33,173 7,141 0.0278
2017-02-10 2016-12-31 13F WATERS COMMON 941848103 0 -1,558 -100.00 0 -100.00
2016-11-10 2016-09-30 13F WATERS COMMON 941848103 1,558 0 0.00 247 12.79 0.0022
2016-08-11 2016-06-30 13F WATERS COMMON 941848103 1,558 -5,181 -76.88 219 -75.37 0.0020
2016-05-12 2016-03-31 13F WATERS COMMON 941848103 6,739 -2,355 -25.90 889 -27.37 0.0085
2016-02-11 2015-12-31 13F WATERS COMMON 941848103 9,094 1,491 19.61 1,224 36.15 0.0122
2015-11-12 2015-09-30 13F WATERS COMMON 941848103 7,603 1,939 34.23 899 23.49 0.0096
2015-08-14 2015-06-30 13F WATERS COMMON 941848103 5,664 5,664 728 0.0072
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.