Waters Corporation
MX ˙ BMV ˙ US9418481035
SecurityMX:WAT / Waters Corporation
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership15,609 shares
Latest Disclosed Value $ 4,647,767
Advisor Group Holdings, Inc. reports 71.15% increase in ownership of WAT / Waters Corporation

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 15,609 shares of Waters Corporation (MX:WAT) valued at $4,647,767 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 9,120 shares of Waters Corporation. This represents a change in shares of 71.15% 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)
2026-05-15 2026-03-31 13F WATERS COM 941848103 15,609 6,489 71.15 4,648 34.19 0.0040
2026-02-17 2025-12-31 13F WATERS COM 941848103 9,120 5,064 124.85 3,464 187.62 0.0051
2025-11-14 2025-09-30 13F WATERS COM 941848103 4,056 2,175 115.63 1,205 83.26 0.0017
2025-09-04 2025-06-30 13F/A-1 ATERS COM 941848103 1,881 -7 -0.37 658 -5.47 0.0012
2025-08-13 2025-06-30 13F ATERS COM 941848103 4,413 2,525 1,629 0.0019
2025-05-12 2025-03-31 13F WATERS COM 941848103 1,888 -5,387 -74.05 696 -65.42 0.0016
2025-06-06 2024-12-31 13F/A-1 WATERS COM 941848103 7,275 3,230 79.85 2,010 38.14 0.0045
2025-02-07 2024-12-31 13F WATERS COM 941848103 4,197 152 858 0.0022
2024-11-13 2024-09-30 13F WATERS COM 941848103 4,045 -2,634 -39.44 1,456 -24.88 0.0033
2024-08-13 2024-06-30 13F WATERS COM 941848103 6,679 2,028 43.60 1,937 21.06 0.0046
2024-05-10 2024-03-31 13F WATERS COM 941848103 4,651 -2,730 -36.99 1,601 -34.13 0.0036
2024-02-12 2023-12-31 13F WATERS COM 941848103 7,381 -2,791 -27.44 2,429 -12.88 0.0043
2023-11-13 2023-09-30 13F WATERS COM 941848103 10,172 4,020 65.34 2,789 70.10 0.0041
2023-08-21 2023-06-30 13F/A-1 WATERS COM 941848103 6,152 2,038 49.54 1,640 28.75 0.0029
2023-08-10 2023-06-30 13F WATERS COM 941848103 6,152 2,038 1,640 0.0004
2023-05-12 2023-03-31 13F WATERS COM 941848103 4,114 723 21.32 1,274 9.74 0.0024
2023-02-10 2022-12-31 13F WATERS COM 941848103 3,391 -603 -15.10 1,160 7.61 0.0023
2022-11-14 2022-09-30 13F WATERS COM 941848103 3,994 58 1.47 1,078 -17.33 0.0025
2022-08-10 2022-06-30 13F WATERS COM 941848103 3,936 358 10.01 1,304 17.48 0.0029
2022-05-04 2022-03-31 13F WATERS COM 941848103 3,578 -104 -2.82 1,110 -19.10 0.0022
2022-02-03 2021-12-31 13F WATERS COM 941848103 3,682 -2,273 -38.17 1,372 -35.53 0.0026
2021-11-05 2021-09-30 13F WATERS COM 941848103 5,955 2,625 78.83 2,128 85.04 0.0044
2021-08-02 2021-06-30 13F WATERS COM 941848103 3,330 -13 -0.39 1,150 21.05 0.0025
2021-05-13 2021-03-31 13F WATERS COM 941848103 3,343 -201 -5.67 950 8.32 0.0023
2021-02-10 2020-12-31 13F WATERS COM 941848103 3,544 -2,103 -37.24 877 -20.71 0.0023
2020-11-12 2020-09-30 13F WATERS COM 941848103 5,647 -563 -9.07 1,106 -1.34 0.0033
2020-08-14 2020-06-30 13F WATERS COM 941848103 6,210 -2,877 -31.66 1,121 -5.96 0.0038
2020-05-18 2020-03-31 13F WATERS COM 941848103 9,087 9,087 1,192 0.0049
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.