Waters Corporation
US ˙ NYSE ˙ US9418481035

SecurityWAT / Waters Corporation
InstitutionCerity Partners LLC
Latest Disclosed Ownership29,112 shares
Latest Disclosed Value $ 8,669,672
Cerity Partners LLC reports 179.82% increase in ownership of WAT / Waters Corporation

On May 15, 2026 - Cerity Partners LLC filed a 13F-HR form disclosing ownership of 29,112 shares of Waters Corporation (US:WAT) valued at $8,669,554 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 10,404 shares of Waters Corporation. This represents a change in shares of 179.82% during the quarter. The current value of the position is $11,055,864 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)
2026-05-15 2026-03-31 13F WATERS COM 941848103 29,112 18,708 179.82 8,670 119.41 0.0061
2026-02-11 2025-12-31 13F WATERS COM 941848103 10,404 -515 -4.72 3,952 20.71 0.0058
2025-10-22 2025-09-30 13F WATERS COM 941848103 10,919 -1,811 -14.23 3,274 -26.33 0.0053
2025-08-13 2025-06-30 13F WATERS Stock 941848103 12,730 -1,221 -8.75 4,443 -13.58 0.0079
2025-04-30 2025-03-31 13F WATERS Stock 941848103 13,951 7,989 134.00 5,142 135.07 0.0104
2025-02-13 2024-12-31 13F WATERS Stock 941848103 5,962 613 11.46 2,187 13.61 0.0047
2024-11-12 2024-09-30 13F WATERS Stock 941848103 5,349 807 17.77 1,925 46.17 0.0043
2024-08-13 2024-06-30 13F WATERS COM 941848103 4,542 -424 -8.54 1,318 -22.94 0.0035
2024-05-14 2024-03-31 13F WATERS Stock 941848103 4,966 1,741 53.98 1,709 61.07 0.0045
2024-01-26 2023-12-31 13F WATERS Equity 941848103 3,225 671 26.27 1,062 51.57 0.0035
2023-11-14 2023-09-30 13F WATERS COM 941848103 2,554 -556 -17.88 700 -15.46 0.0034
2023-08-14 2023-06-30 13F WATERS Stock 941848103 3,110 1,443 86.56 829 60.47 0.0032
2023-05-11 2023-03-31 13F WATERS Stock 941848103 1,667 167 11.13 516 0.58 0.0012
2023-02-15 2022-12-31 13F WATERS Stock 941848103 1,500 -71 -4.52 514 20.99 0.0033
2022-11-14 2022-09-30 13F WATERS Stock 941848103 1,571 -78 -4.73 424 -22.34 0.0051
2022-08-10 2022-06-30 13F WATERS STOCK 941848103 1,649 240 17.03 546 24.94 0.0060
2022-04-25 2022-03-31 13F WATERS COM 941848103 1,409 377 36.53 437 13.51 0.0068
2022-02-14 2021-12-31 13F WATERS Stock 941848103 1,032 211 25.70 385 31.40 0.0059
2021-10-25 2021-09-30 13F Waters Stock 941848103 821 -1 -0.12 293 3.17 0.0064
2021-08-11 2021-06-30 13F WATERS Stock 941848103 822 -3 -0.36 284 21.37 0.0062
2021-08-11 2021-03-31 13F/A-1 WATERS Stock 941848103 825 3 0.36 234 15.27 0.0056
2021-05-12 2021-03-31 13F WATERS Stock 941848103 821 -1 233 0.0069
2021-02-11 2020-12-31 13F WATERS Stock 941848103 822 822 203 0.0065
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.