Waters Corporation
MX ˙ BMV ˙ US9418481035
SecurityMX:WAT / Waters Corporation
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership1,004 shares
Latest Disclosed Value $ 298,991
Engineers Gate Manager LP reports 86.71% decrease in ownership of WAT / Waters Corporation

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 1,004 shares of Waters Corporation (MX:WAT) valued at $298,991 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 7,557 shares of Waters Corporation. This represents a change in shares of -86.71% 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 1,004 -6,553 -86.71 299 -89.62 0.0037
2026-02-17 2025-12-31 13F WATERS COM 941848103 7,557 2,505 49.58 2,870 89.56 0.0340
2025-11-14 2025-09-30 13F WATERS COM 941848103 5,052 964 23.58 1,515 6.17 0.0173
2025-08-14 2025-06-30 13F WATERS COM 941848103 4,088 2,058 101.38 1,427 90.64 0.0178
2025-05-15 2025-03-31 13F WATERS COM 941848103 2,030 -5,046 -71.31 748 -71.50 0.0126
2025-02-14 2024-12-31 13F WATERS COM 941848103 7,076 7,076 2,625 0.0457
2024-11-14 2024-09-30 13F WATERS COM 941848103 0 -28,888 -100.00 0 -100.00
2024-08-14 2024-06-30 13F WATERS COM 941848103 28,888 28,888 8,381 0.1890
2023-08-14 2023-06-30 13F WATERS COM 941848103 0 -10,546 -100.00 0 -100.00
2023-05-15 2023-03-31 13F WATERS COM 941848103 10,546 8,043 321.33 3,265 280.98 0.1364
2023-02-14 2022-12-31 13F WATERS COM 941848103 2,503 2,503 857 0.0515
2022-11-14 2022-09-30 13F WATERS COM 941848103 0 -2,235 -100.00 0 -100.00
2022-08-15 2022-06-30 13F WATERS COM 941848103 2,235 -5,757 -72.03 740 -70.17 0.0271
2022-05-16 2022-03-31 13F WATERS COM 941848103 7,992 5,166 182.80 2,481 135.61 0.0971
2022-02-14 2021-12-31 13F WATERS COM 941848103 2,826 -5,120 -64.43 1,053 -62.91 0.0474
2021-11-15 2021-09-30 13F WATERS COM 941848103 7,946 5,860 280.92 2,839 293.76 0.1618
2021-08-16 2021-06-30 13F WATERS COM 941848103 2,086 306 17.19 721 42.49 0.0464
2021-05-17 2021-03-31 13F WATERS COM 941848103 1,780 -963 -35.11 506 -25.48 0.0251
2021-02-16 2020-12-31 13F WATERS COM 941848103 2,743 -16,590 -85.81 679 -82.05 0.0294
2020-11-16 2020-09-30 13F WATERS COM 941848103 19,333 -4,375 -18.45 3,783 -11.55 0.1775
2020-08-17 2020-06-30 13F WATERS COM 941848103 23,708 23,708 4,277 0.2176
2020-05-15 2020-03-31 13F WATERS COM 941848103 0 -1,587 -100.00 0 -100.00
2020-02-14 2019-12-31 13F WATERS COM 941848103 1,587 1,587 371 0.0163
2019-11-14 2019-09-30 13F WATERS COM 941848103 0 -4,313 -100.00 0 -100.00
2019-08-14 2019-06-30 13F WATERS COM 941848103 4,313 4,313 929 0.0513
2019-05-15 2019-03-31 13F WATERS COM 941848103 0 -14,201 -100.00 0 -100.00
2019-02-14 2018-12-31 13F WATERS COM 941848103 14,201 13,088 1,175.92 2,679 1,134.56 0.2144
2018-11-01 2018-09-30 13F WATERS COM 941848103 1,113 1,113 217 0.0167
2018-08-03 2018-06-30 13F WATERS COM 941848103 0 -3,445 -100.00 0 -100.00
2018-05-07 2018-03-31 13F WATERS COM 941848103 3,445 3,445 684 0.0456
2017-08-10 2017-06-30 13F WATERS COM 941848103 0 -22,501 -100.00 0 -100.00
2017-05-05 2017-03-31 13F WATERS COM 941848103 22,501 12,642 128.23 3,517 165.43 0.3492
2017-02-10 2016-12-31 13F WATERS COM 941848103 9,859 9,859 1,325 0.1422
2015-05-15 2015-03-31 13F WATERS COM 941848103 0 -3,226 -100.00 0 -100.00
2015-02-17 2014-12-31 13F WATERS COM 941848103 3,226 3,226 364 0.1037
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.