Waters Corporation
MX ˙ BMV ˙ US9418481035
SecurityMX:WAT / Waters Corporation
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership814,716 shares
Latest Disclosed Value $ 242,598,706
Dimensional Fund Advisors Lp reports 60.76% increase in ownership of WAT / Waters Corporation

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 814,716 shares of Waters Corporation (MX:WAT) valued at $242,598,706 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 506,775 shares of Waters Corporation. This represents a change in shares of 60.76% 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)
2026-05-07 2026-03-31 13F WATERS COM 941848103 814,716 307,941 60.76 242,599 26.02 0.0109
2026-02-12 2025-12-31 13F WATERS COM 941848103 506,775 -30,807 -5.73 192,510 19.49 0.0404
2025-11-12 2025-09-30 13F WATERS COM 941848103 537,582 15,762 3.02 161,108 -11.55 0.0346
2025-08-12 2025-06-30 13F WATERS COM 941848103 521,820 37,301 7.70 182,155 2.02 0.0422
2025-05-13 2025-03-31 13F WATERS COM 941848103 484,519 -4,612 -0.94 178,546 -1.61 0.0444
2025-02-13 2024-12-31 13F WATERS COM 941848103 489,131 -1,595 -0.33 181,464 2.76 0.0436
2024-11-07 2024-09-30 13F WATERS COM 941848103 490,726 42,422 9.46 176,595 35.79 0.0428
2024-08-09 2024-06-30 13F WATERS COM 941848103 448,304 77,951 21.05 130,053 2.01 0.0340
2024-05-10 2024-03-31 13F WATERS COM 941848103 370,353 23,541 6.79 127,487 11.64 0.0345
2024-02-07 2023-12-31 13F WATERS COM 941848103 346,812 18,946 5.78 114,191 27.01 0.0333
2023-11-09 2023-09-30 13F WATERS COM 941848103 327,866 10,234 3.22 89,910 6.21 0.0295
2023-08-09 2023-06-30 13F WATERS COM 941848103 317,632 15,513 5.13 84,654 -9.49 0.0270
2023-05-12 2023-03-31 13F WATERS COM 941848103 302,119 2,730 0.91 93,535 91,600.00 0.0315
2023-02-09 2022-12-31 13F WATERS COM 941848103 299,389 3,463 1.17 103 -99.87 0.0303
2022-11-10 2022-09-30 13F WATERS COM 941848103 295,926 3,389 1.16 79,774 -17.60 0.0306
2022-08-12 2022-06-30 13F WATERS COM 941848103 292,537 -1,490 -0.51 96,814 6.05 0.0347
2022-05-13 2022-03-31 13F WATERS COM 941848103 294,027 4,656 1.61 91,287 -15.33 0.0281
2022-02-09 2021-12-31 13F WATERS COM 941848103 289,371 548 0.19 107,817 4.46 0.0326
2021-11-12 2021-09-30 13F WATERS COM 941848103 288,823 -1,137 -0.39 103,215 3.00 0.0332
2021-08-12 2021-06-30 13F WATERS COM 941848103 289,960 20,227 7.50 100,211 30.74 0.0317
2021-05-14 2021-03-31 13F WATERS COM 941848103 269,733 -615 -0.23 76,647 14.59 0.0254
2021-03-08 2020-12-31 13F/A-2 WATERS COM 941848103 270,348 10,427 4.01 66,886 31.53 0.0242
2021-02-11 2020-12-31 13F WATERS COM 941848103 270,348 10,427 66,886 24,155.6680
2020-11-12 2020-09-30 13F WATERS COM 941848103 259,921 -16,611 -6.01 50,854 1.96 0.0216
2020-08-13 2020-06-30 13F WATERS COM 941848103 276,532 -51,003 -15.57 49,876 -16.37 0.0219
2020-05-14 2020-03-31 13F WATERS COM 941848103 327,535 22,075 7.23 59,642 -16.43 0.0311
2020-02-14 2019-12-31 13F WATERS COM 941848103 305,460 1,246 0.41 71,370 5.10 0.0260
2019-11-12 2019-09-30 13F WATERS COM 941848103 304,214 8,756 2.96 67,909 6.79 0.0264
2019-08-13 2019-06-30 13F WATERS COM 941848103 295,458 2,648 0.90 63,592 -13.71 0.0247
2019-08-12 2019-03-31 13F/A-2 WATERS COM 941848103 292,810 1,897 0.65 73,698 34.30 0.0294
2019-05-10 2019-03-31 13F WATERS COM 941848103 292,810 1,897 73,698
2019-02-26 2018-12-31 13F/A-1 WATERS COM 941848103 290,913 41,782 16.77 54,875 13.14 0.0249
2019-02-13 2018-12-31 13F WATERS COM 941848103 290,913 41,782 54,875
2018-11-13 2018-09-30 13F WATERS COM 941848103 249,131 33,929 15.77 48,502 16.42 0.0185
2018-08-10 2018-06-30 13F WATERS COM 941848103 215,202 1,598 0.75 41,662 -1.81 0.0166
2018-05-11 2018-03-31 13F WATERS COM 941848103 213,604 1,577 0.74 42,432 3.58 0.0177
2018-02-12 2017-12-31 13F WATERS COM 941848103 212,027 1,192 0.57 40,965 8.24 0.0170
2017-11-13 2017-09-30 13F WATERS COM 941848103 210,835 1,754 0.84 37,848 -1.53 0.0165
2017-08-11 2017-06-30 13F WATERS COM 941848103 209,081 1,448 0.70 38,436 18.43 0.0177
2017-05-12 2017-03-31 13F WATERS COM 941848103 207,633 3,187 1.56 32,455 18.12 0.0155
2017-02-09 2016-12-31 13F WATERS COM 941848103 204,446 -1,603 -0.78 27,476 -15.86 0.0137
2016-11-10 2016-09-30 13F WATERS COM 941848103 206,049 8,957 4.54 32,654 17.83 0.0176
2016-08-09 2016-06-30 13F WATERS COM 941848103 197,092 9,978 5.33 27,712 12.27 0.0159
2016-05-13 2016-03-31 13F WATERS COM 941848103 187,114 4,814 2.64 24,684 0.61 0.0148
2016-02-10 2015-12-31 13F WATERS COM 941848103 182,300 10,779 6.28 24,535 21.01 0.0153
2015-11-13 2015-09-30 13F WATERS COM 941848103 171,521 4,845 2.91 20,276 -5.24 0.0133
2015-08-14 2015-06-30 13F WATERS COM 941848103 166,676 28,309 20.46 21,398 24.39 0.0131
2015-05-14 2015-03-31 13F WATERS COM 941848103 138,367 13,312 10.64 17,202 22.02 0.0109
2015-02-06 2014-12-31 13F WATERS COM 941848103 125,055 9,536 8.25 14,098 23.11 0.0093
2014-11-13 2014-09-30 13F WATERS COM 941848103 115,519 4,525 4.08 11,452 -1.22 0.0081
2014-08-08 2014-06-30 13F WATERS COM 941848103 110,994 2,638 2.43 11,593 -1.30 0.0081
2014-05-14 2014-03-31 13F WATERS COM 941848103 108,356 793 0.74 11,746 9.19 0.0088
2014-02-12 2013-12-31 13F WATERS COM 941848103 107,563 166 0.15 10,757 -5.70 0.0084
2013-11-13 2013-09-30 13F WATERS COM 941848103 107,397 7,039 7.01 11,407 13.60 0.0099
2013-08-15 2013-06-30 13F WATERS COM 941848103 100,358 100,358 10,041 0.0095
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.