Waters Corporation
MX ˙ BMV ˙ US9418481035
SecurityMX:WAT / Waters Corporation
InstitutionD.a. Davidson & Co.
Latest Disclosed Ownership17,953 shares
Latest Disclosed Value $ 5,346,482
D.a. Davidson & Co. reports 453.42% increase in ownership of WAT / Waters Corporation

On May 5, 2026 - D.a. Davidson & Co. filed a 13F-HR form disclosing ownership of 17,953 shares of Waters Corporation (MX:WAT) valued at $5,346,482 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 3,244 shares of Waters Corporation. This represents a change in shares of 453.42% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-05 2026-03-31 13F WATERS COM 941848103 17,953 14,709 453.42 5,346 333.93 0.0324
2026-01-29 2025-12-31 13F WATERS COM 941848103 3,244 -67 -2.02 1,232 24.19 0.0075
2025-10-22 2025-09-30 13F WATERS COM 941848103 3,311 111 3.47 993 -11.11 0.0064
2025-07-30 2025-06-30 13F WATERS COM 941848103 3,200 -100 -3.03 1,117 -8.22 0.0079
2025-04-28 2025-03-31 13F WATERS COM 941848103 3,300 -5 -0.15 1,216 -0.82 0.0098
2025-01-31 2024-12-31 13F WATERS COM 941848103 3,305 5 0.15 1,226 3.29 0.0100
2024-11-13 2024-09-30 13F WATERS COM 941848103 3,300 -10 -0.30 1,188 23.65 0.0098
2024-08-01 2024-06-30 13F WATERS COM 941848103 3,310 -200 -5.70 960 -20.53 0.0085
2024-05-13 2024-03-31 13F WATERS COM 941848103 3,510 -25 -0.71 1,208 3.87 0.0109
2024-02-09 2023-12-31 13F WATERS COM 941848103 3,535 75 2.17 1,164 22.68 0.0114
2023-11-08 2023-09-30 13F WATERS COM 941848103 3,460 0 0.00 949 2.82 0.0103
2023-08-11 2023-06-30 13F WATERS COM 941848103 3,460 50 1.47 922 -12.61 0.0097
2023-04-25 2023-03-31 13F WATERS COM 941848103 3,410 -4,700 -57.95 1,056 -62.24 0.0119
2023-02-03 2022-12-31 13F WATERS COM 941848103 8,110 0 0.00 2,795 26.37 0.0330
2022-11-07 2022-09-30 13F WATERS COM 941848103 8,110 0 0.00 2,211 -17.62 0.0290
2022-07-28 2022-06-30 13F WATERS COM 941848103 8,110 0 0.00 2,684 6.63 0.0337
2022-05-12 2022-03-31 13F WATERS COM 941848103 8,110 -50 -0.61 2,517 -17.12 0.0274
2022-01-31 2021-12-31 13F WATERS COM 941848103 8,160 -86 -1.04 3,037 3.09 0.0324
2021-11-15 2021-09-30 13F WATERS COM 941848103 8,246 -2 -0.02 2,946 3.33 0.0342
2021-08-10 2021-06-30 13F WATERS COM 941848103 8,248 7 0.08 2,851 21.73 0.0334
2021-05-07 2021-03-31 13F WATERS COM 941848103 8,241 6 0.07 2,342 15.48 0.0300
2021-02-10 2020-12-31 13F WATERS COM 941848103 8,235 0 0.00 2,028 25.88 0.0310
2020-11-02 2020-09-30 13F WATERS COM 941848103 8,235 0 0.00 1,611 8.41 0.0280
2020-08-10 2020-06-30 13F WATERS COM 941848103 8,235 50 0.61 1,486 -2.30 0.0277
2020-05-05 2020-03-31 13F WATERS COM 941848103 8,185 0 0.00 1,521 -20.37 0.0297
2020-02-14 2019-12-31 13F WATERS COM 941848103 8,185 -35 -0.43 1,910 4.09 0.0309
2019-11-05 2019-09-30 13F WATERS COM 941848103 8,220 0 0.00 1,835 3.73 0.0329
2019-08-13 2019-06-30 13F WATERS COM 941848103 8,220 -6,851 -45.46 1,769 -50.77 0.0330
2019-05-13 2019-03-31 13F WATERS COM 941848103 15,071 279 1.89 3,593 28.74 0.0618
2019-01-29 2018-12-31 13F WATERS COM 941848103 14,792 548 3.85 2,791 0.65 0.0544
2018-11-13 2018-09-30 13F WATERS COM 941848103 14,244 7 0.05 2,773 0.62 0.0493
2018-08-02 2018-06-30 13F WATERS COM 941848103 14,237 851 6.36 2,756 3.65 0.0540
2018-05-04 2018-03-31 13F WATERS COM 941848103 13,386 586 4.58 2,659 7.52 0.0550
2018-02-08 2017-12-31 13F WATERS COM 941848103 12,800 101 0.80 2,473 8.51 0.0519
2017-11-08 2017-09-30 13F WATERS COM 941848103 12,699 669 5.56 2,279 3.08 0.0447
2017-08-11 2017-06-30 13F WATERS COM 941848103 12,030 5,158 75.06 2,211 105.87 0.0499
2017-05-12 2017-03-31 13F WATERS COM 941848103 6,872 -17,358 -71.64 1,074 -66.99 0.0260
2017-02-15 2016-12-31 13F WATERS COM 941848103 24,230 495 2.09 3,254 -13.43 0.0738
2016-11-18 2016-09-30 13F/A-1 WATERS COM 941848103 23,735 -7,448 -23.88 3,759 -14.24 0.0935
2016-11-14 2016-09-30 13F WATERS COM 941848103 23,735 3,759
2016-08-13 2016-06-30 13F WATERS COM 941848103 31,183 734 2.41 4,383 9.19 0.1290
2016-05-13 2016-03-31 13F WATERS COM 941848103 30,449 1,194 4.08 4,014 2.01 0.1250
2016-02-12 2015-12-31 13F WATERS COM 941848103 29,255 -701 -2.34 3,935 11.22 0.1282
2015-11-13 2015-09-30 13F WATERS COM 941848103 29,956 -1,898 -5.96 3,538 -13.43 0.1238
2015-08-14 2015-06-30 13F WATERS COM 941848103 31,854 -1,473 -4.42 4,087 -1.30 0.1343
2015-05-06 2015-03-31 13F WATERS COM 941848103 33,327 378 1.15 4,141 11.53 0.1359
2015-02-12 2014-12-31 13F WATERS COM 941848103 32,949 -1,026 -3.02 3,713 10.31 0.1214
2014-11-12 2014-09-30 13F WATERS COM 941848103 33,975 2,162 6.80 3,366 1.39 0.1141
2014-07-29 2014-06-30 13F WATERS COM 941848103 31,813 -2,407 -7.03 3,320 -10.44 0.1124
2014-05-05 2014-03-31 13F WATERS COM 941848103 34,220 1,269 3.85 3,707 12.57 0.1325
2014-02-13 2013-12-31 13F/A-1 WATERS COM 941848103 32,951 2,407 7.88 3,293 1.51 0.1230
2014-02-12 2013-12-31 13F WATERS COM 941848103 32,951 3,293
2013-11-14 2013-09-30 13F WATERS COM 941848103 30,544 521 1.74 3,244 8.03 0.1459
2013-08-16 2013-06-30 13F WATERS COM 941848103 30,023 30,023 3,003 0.1450
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.