Waters Corporation
MX ˙ BMV ˙ US9418481035
SecurityMX:WAT / Waters Corporation
InstitutionAssetmark, Inc
Latest Disclosed Ownership9,645 shares
Latest Disclosed Value $ 2,872,248
Assetmark, Inc reports 440.34% increase in ownership of WAT / Waters Corporation

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 9,645 shares of Waters Corporation (MX:WAT) valued at $2,872,248 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,785 shares of Waters Corporation. This represents a change in shares of 440.34% 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)
2026-05-06 2026-03-31 13F WATERS COM 941848103 9,645 7,860 440.34 2,872 324.22 0.0059
2026-01-23 2025-12-31 13F WATERS COM 941848103 1,785 70 4.08 678 31.71 0.0014
2025-11-06 2025-09-30 13F WATERS COM 941848103 1,715 -369 -17.71 514 -29.30 0.0011
2025-08-04 2025-06-30 13F WATERS COM 941848103 2,084 539 34.89 727 27.77 0.0017
2025-05-06 2025-03-31 13F WATERS COM 941848103 1,545 275 21.65 569 20.81 0.0016
2025-02-06 2024-12-31 13F WATERS COM 941848103 1,270 70 5.83 471 9.28 0.0013
2024-11-01 2024-09-30 13F WATERS COM 941848103 1,200 170 16.50 432 44.63 0.0012
2024-08-13 2024-06-30 13F WATERS COM 941848103 1,030 155 17.71 299 -1.00 0.0009
2024-05-07 2024-03-31 13F WATERS COM 941848103 875 163 22.89 301 28.63 0.0010
2024-02-09 2023-12-31 13F WATERS COM 941848103 712 166 30.40 234 57.05 0.0008
2023-10-27 2023-09-30 13F WATERS COM 941848103 546 5 0.92 150 3.47 0.0006
2023-08-11 2023-06-30 13F WATERS CORP COM COM 941848103 541 238 78.55 144 54.84 0.0006
2023-05-05 2023-03-31 13F WATERS CORP COM COM 941848103 303 8 2.71 94 -7.92 0.0004
2023-02-10 2022-12-31 13F WATERS COM 941848103 295 -29 -8.95 101 16.09 0.0004
2022-11-01 2022-09-30 13F WATERS COM 941848103 324 31 10.58 87 -10.31 0.0004
2022-08-03 2022-06-30 13F WATERS CORP COM COM 941848103 293 -69 -19.06 97 -13.39 0.0004
2022-05-13 2022-03-31 13F WATERS CORP COM COM 941848103 362 111 44.22 112 19.15 0.0005
2022-02-14 2021-12-31 13F WATERS CORP COM COM 941848103 251 203 422.92 94 452.94 0.0004
2021-11-12 2021-09-30 13F WATERS CORP COM COM 941848103 48 0 0.00 17 0.00 0.0001
2021-08-16 2021-06-30 13F WATERS CORP COM COM 941848103 48 10 26.32 17 54.55 0.0001
2021-05-14 2021-03-31 13F WATERS COM 941848103 38 0 0.00 11 22.22 0.0001
2021-02-10 2020-12-31 13F WATERS CORP COM COM 941848103 38 0 0.00 9 28.57 0.0001
2020-11-13 2020-09-30 13F WATERS CORP COM COM 941848103 38 0 0.00 7 0.00 0.0000
2020-08-11 2020-06-30 13F WATERS CORP COM COM 941848103 38 -20 -34.48 7 -36.36 0.0001
2020-05-12 2020-03-31 13F WATERS CORP COM COM 941848103 58 0 0.00 11 -21.43 0.0001
2020-02-11 2019-12-31 13F WATERS CORP COM COM 941848103 58 0 0.00 14 7.69 0.0001
2019-11-13 2019-09-30 13F WATERS CORP COM COM 941848103 58 -303 -83.93 13 -83.33 0.0001
2019-08-14 2019-06-30 13F WATERS CORP COM COM 941848103 361 0 0.00 78 -14.29 0.0006
2019-05-14 2019-03-31 13F WATERS CORP COM COM 941848103 361 -42 -10.42 91 19.74 0.0008
2019-02-13 2018-12-31 13F WATERS CORP COM COM 941848103 403 -19 -4.50 76 -7.32 0.0007
2018-11-13 2018-09-30 13F WATERS CORP COM COM 941848103 422 -17 -3.87 82 -3.53 0.0007
2018-08-01 2018-06-30 13F WATERS CORP COM COM 941848103 439 0 0.00 85 -2.30 0.0008
2018-05-16 2018-03-31 13F WATERS CORP COM COM 941848103 439 -48 -9.86 87 -7.45 0.0009
2018-02-13 2017-12-31 13F WATERS CORP COM COM 941848103 487 31 6.80 94 14.63 0.0010
2017-11-08 2017-09-30 13F WATERS CORP COM COM 941848103 456 -213 -31.84 82 -33.33 0.0009
2017-08-14 2017-06-30 13F WATERS CORP COM COM 941848103 669 196 41.44 123 66.22 0.0015
2017-09-15 2017-03-31 13F/A-1 WATERS CORP COM COM 941848103 473 0 0.00 74 15.63 0.0010
2017-05-08 2017-03-31 13F WATERS CORP COM COM 941848103 473 0 74
2017-09-15 2016-12-31 13F/A-1 WATERS CORP COM COM 941848103 473 0 0.00 64 -14.67 0.0009
2017-02-14 2016-12-31 13F WATERS CORP COM COM 941848103 473 0 64
2017-09-14 2016-09-30 13F/A-1 WATERS CORP COM COM 941848103 473 0 0.00 75 11.94 0.0011
2016-11-04 2016-09-30 13F WATERS CORP COM COM 941848103 473 0 75
2017-09-14 2016-06-30 13F/A-1 WATERS CORP COM COM 941848103 473 -11 -2.27 67 4.69 0.0011
2016-08-08 2016-06-30 13F WATERS CORP COM COM 941848103 473 -11 67
2017-09-14 2016-03-31 13F/A-1 WATERS CORP COM COM 941848103 484 -341 -41.33 64 -42.34 0.0011
2016-05-13 2016-03-31 13F WATERS CORP COM COM 941848103 484 -341 64
2017-09-14 2015-12-31 13F/A-1 WATERS CORP COM COM 941848103 825 825 111 0.0021
2016-02-12 2015-12-31 13F WATERS CORP COM COM 941848103 825 825 111
2015-11-10 2015-09-30 13F WATERS CORP COM COM 941848103 0 0 0 0.0000
2015-02-03 2014-12-31 13F WATERS CORP COM COM 941848103 0 -2 -100.00 0
2014-11-10 2014-09-30 13F WATERS CORP COM COM 941848103 2 0 0.00 0 0.0000
2014-08-12 2014-06-30 13F WATERS CORP COM COM 941848103 2 0 0.00 0 0.0000
2014-05-06 2014-03-31 13F WATERS CORP COM COM 941848103 2 0 0.00 0 0.0000
2014-02-11 2013-12-31 13F WATERS CORP COM COM 941848103 2 -10,566 -99.98 0 -100.00
2014-02-11 2013-09-30 13F/A-1 WATERS CORP COM COM 941848103 10,568 10,568 1,122 0.0283
2013-11-14 2013-09-30 13F WATERS CORP COM COM 941848103 10,568 1,122 0.0283
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.