Waters Corporation
US ˙ NYSE ˙ US9418481035

SecurityWAT / Waters Corporation
InstitutionIngalls & Snyder Llc
Latest Disclosed Ownership1,464 shares
Latest Disclosed Value $ 436
Ingalls & Snyder Llc reports 13.49% increase in ownership of WAT / Waters Corporation

On May 13, 2026 - Ingalls & Snyder Llc filed a 13F-HR form disclosing ownership of 1,464 shares of Waters Corporation (US:WAT) valued at $435,979 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,290 shares of Waters Corporation. The current value of the position is $555,983 USD.

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)
2026-05-13 2026-03-31 13F WATERS COM 941848103 1,464 174 13.49 0 0.0154
2026-02-13 2025-12-31 13F WATERS COM 941848103 1,290 0 0.00 0 0.0180
2025-11-07 2025-09-30 13F WATERS COM 941848103 1,290 0 0.00 0 0.0127
2025-07-31 2025-06-30 13F WATERS COM 941848103 1,290 0 0.00 0 0.0160
2025-05-12 2025-03-31 13F WATERS COM 941848103 1,290 0 0.00 0 0.0156
2025-01-29 2024-12-31 13F WATERS COM 941848103 1,290 0 0.00 0 0.0188
2024-11-14 2024-09-30 13F WATERS COM 941848103 1,290 0 0.00 0 0.0181
2024-07-31 2024-06-30 13F WATERS COM 941848103 1,290 0 0.00 0 0.0161
2024-05-13 2024-03-31 13F WATERS COM 941848103 1,290 0 0.00 0 0.0196
2024-01-29 2023-12-31 13F WATERS COM 941848103 1,290 0 0.00 0 0.0192
2023-11-02 2023-09-30 13F WATERS COM 941848103 1,290 0 0.00 0 0.0170
2023-07-27 2023-06-30 13F WATERS COM 941848103 1,290 0 0.00 0 0.0165
2023-05-09 2023-03-31 13F WATERS COM 941848103 1,290 0 0.00 0 0.0205
2023-01-31 2022-12-31 13F WATERS COM 941848103 1,290 0 0.00 0 -100.00 0.0240
2022-10-21 2022-09-30 13F WATERS COM 941848103 1,290 0 0.00 348 -18.50 0.0194
2022-08-11 2022-06-30 13F WATERS COM 941848103 1,290 0 0.00 427 6.75 0.0223
2022-05-09 2022-03-31 13F WATERS COM 941848103 1,290 0 0.00 400 -16.84 0.0179
2022-02-11 2021-12-31 13F WATERS COM 941848103 1,290 0 0.00 481 4.34 0.0217
2021-10-27 2021-09-30 13F WATERS COM 941848103 1,290 0 0.00 461 3.36 0.0211
2021-08-03 2021-06-30 13F WATERS COM 941848103 1,290 0 0.00 446 21.53 0.0198
2021-04-21 2021-03-31 13F WATERS CO 941848103 1,290 0 0.00 367 15.05 0.0171
2021-01-27 2020-12-31 13F WATERS COM 941848103 1,290 -15 -1.15 319 25.10 0.0157
2020-10-21 2020-09-30 13F WATERS COM 941848103 1,305 -15 -1.14 255 7.14 0.0175
2020-07-31 2020-06-30 13F WATERS COM 941848103 1,320 0 0.00 238 -0.83 0.0137
2020-04-22 2020-03-31 13F WATERS COM 941848103 1,320 0 0.00 240 -22.08 0.0162
2020-01-15 2019-12-31 13F WATERS COM 941848103 1,320 0 0.00 308 4.41 0.0167
2019-10-16 2019-09-30 13F WATERS COM 941848103 1,320 -75 -5.38 295 -1.67 0.0144
2019-07-11 2019-06-30 13F WATERS COM 941848103 1,395 -120 -7.92 300 -21.26 0.0144
2019-04-11 2019-03-31 13F WATERS COM 941848103 1,515 -105 -6.48 381 24.51 0.0182
2019-01-24 2018-12-31 13F WATERS COM 941848103 1,620 0 0.00 306 -2.86 0.0162
2018-10-24 2018-09-30 13F WATERS COM 941848103 1,620 -40 -2.41 315 -1.87 0.0133
2018-08-10 2018-06-30 13F WATERS COM 941848103 1,660 0 0.00 321 -2.73 0.0149
2018-04-17 2018-03-31 13F WATERS COM 941848103 1,660 0 0.00 330 2.80 0.0161
2018-01-19 2017-12-31 13F WATERS COM 941848103 1,660 130 8.50 321 16.73 0.0148
2017-10-20 2017-09-30 13F WATERS COM 941848103 1,530 0 0.00 275 -2.14 0.0143
2017-07-28 2017-06-30 13F WATERS COM 941848103 1,530 -45 -2.86 281 14.23 0.0153
2017-05-09 2017-03-31 13F WATERS COM 941848103 1,575 0 0.00 246 16.04 0.0131
2017-01-25 2016-12-31 13F WATERS COM 941848103 1,575 -200 -11.27 212 -24.56 0.0115
2016-11-03 2016-09-30 13F WATERS COM 941848103 1,775 -200 -10.13 281 1.08 0.0157
2016-08-11 2016-06-30 13F WATERS COM 941848103 1,975 0 0.00 278 6.92 0.0164
2016-04-29 2016-03-31 13F WATERS COMMON 094184810 1,975 0 0.00 260 -1.89 0.0165
2016-01-27 2015-12-31 13F WATERS COMMON 094184810 1,975 0 0.00 265 13.73 0.0169
2015-10-27 2015-09-30 13F WATERS COMMON 094184810 1,975 0 0.00 233 -7.91 0.0152
2015-07-10 2015-06-30 13F WATERS COMMON 094184810 1,975 0 0.00 253 3.27 0.0140
2015-04-15 2015-03-31 13F WATERS COMMON 094184810 1,975 1,975 245 0.0135
2014-10-28 2014-09-30 13F WATERS COMMON 094184810 0 -1,975 -100.00 0 -100.00
2014-07-30 2014-06-30 13F WATERS COMMON 094184810 1,975 0 0.00 206 -3.74 0.0101
2014-05-02 2014-03-31 13F WATERS COMMON 094184810 1,975 1,975 -86.63 214 -86.35 0.0115
2014-01-24 2013-12-31 13F WATERS COMMON 094184810 0 -14,770 -100.00 0 -100.00
2013-11-12 2013-09-30 13F WATERS COMMON 094184810 14,770 -170 -1.14 1,568 4.95 0.0937
2013-08-09 2013-06-30 13F/A-1 WATERS COMMON 094184810 14,940 14,940 1,494 0.0952
2013-08-08 2013-06-30 13F WATERS COMMON 094184810 11,260 1,126
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.