Watts Water Technologies, Inc.
MX ˙ BMV ˙ US9427491025
SecurityMX:WTS / Watts Water Technologies, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership361,010 shares
Latest Disclosed Value $ 104,797,593
Northern Trust Corp reports 1.76% increase in ownership of WTS / Watts Water Technologies, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 361,010 shares of Watts Water Technologies, Inc. (MX:WTS) valued at $104,797,593 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 354,773 shares of Watts Water Technologies, Inc.. This represents a change in shares of 1.76% 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)
2026-05-14 2026-03-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 361,010 6,237 1.76 104,798 7.02 0.0028
2026-02-17 2025-12-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 354,773 -21,505 -5.72 97,924 -6.82 0.0026
2025-11-14 2025-09-30 13F WATTS WATER TECHNOLOGIES CL A 942749102 376,278 -3,651 -0.96 105,087 12.49 0.0134
2025-08-13 2025-06-30 13F WATTS WATER TECHNOLOGIES CL A 942749102 379,929 -7,986 -2.06 93,421 18.10 0.0128
2025-05-13 2025-03-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 387,915 -10,426 -2.62 79,104 -2.32 0.0117
2025-02-14 2024-12-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 398,341 40,738 11.39 80,983 9.30 0.0115
2024-11-13 2024-09-30 13F WATTS WATER TECHNOLOGIES COM 942749102 357,603 11,552 3.34 74,092 16.76 0.0121
2024-08-14 2024-06-30 13F WATTS WATER TECHNOLOGIES COM 942749102 346,051 8,670 2.57 63,455 -11.51 0.0107
2024-05-14 2024-03-31 13F WATTS WATER TECHNOLOGIES COM 942749102 337,381 -29,068 -7.93 71,710 -6.07 0.0124
2024-02-13 2023-12-31 13F WATTS WATER TECHNOLOGIES COM 942749102 366,449 -3,081 -0.83 76,346 19.55 0.0138
2023-11-13 2023-09-30 13F WATTS WATER TECHNOLOGIES COM 942749102 369,530 -6,955 -1.85 63,862 -7.68 0.0124
2023-08-11 2023-06-30 13F WATTS WATER TECHNOLOGIES COM 942749102 376,485 -17,859 -4.53 69,172 4.21 0.0133
2023-05-15 2023-03-31 13F WATTS WATER TECHNOLOGIES COM 942749102 394,344 2,299 0.59 66,376 15.78 0.0132
2023-02-13 2022-12-31 13F WATTS WATER TECHNOLOGIES COM 942749102 392,045 2,229 0.57 57,329 16.96 0.0120
2022-11-14 2022-09-30 13F WATTS WATER TECHNOLOGIES COM 942749102 389,816 -6,226 -1.57 49,013 0.75 0.0112
2022-08-12 2022-06-30 13F WATTS WATER TECHNOLOGIES COM 942749102 396,042 -59,281 -13.02 48,649 -23.46 0.0104
2022-05-13 2022-03-31 13F WATTS WATER TECHNOLOGIES COM 942749102 455,323 102,485 29.05 63,558 -7.23 0.0112
2022-02-08 2021-12-31 13F WATTS WATER TECHNOLOGIES COM 942749102 352,838 3,354 0.96 68,511 16.62 0.0112
2021-11-15 2021-09-30 13F WATTS WATER TECHNOLOGIES COM 942749102 349,484 -4,881 -1.38 58,745 13.61 0.0104
2021-08-13 2021-06-30 13F WATTS WATER TECHNOLOGIES CL A 942749102 354,365 2,665 0.76 51,706 23.74 0.0091
2021-05-12 2021-03-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 351,700 -316,799 -47.39 41,786 -48.64 0.0078
2021-02-11 2020-12-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 668,499 -11,704 -1.72 81,356 19.43 0.0158
2020-11-16 2020-09-30 13F WATTS WATER TECHNOLOGIES CL A 942749102 680,203 -21,063 -3.00 68,122 19.93 0.0149
2020-08-14 2020-06-30 13F WATTS WATER TECHNOLOGIES COM 942749102 701,266 2,464 0.35 56,802 -3.98 0.0135
2020-05-14 2020-03-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 698,802 3,752 0.54 59,154 -14.69 0.0170
2020-02-14 2019-12-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 695,050 -11,229 -1.59 69,338 4.74 0.0155
2019-11-13 2019-09-30 13F WATTS WATER TECHNOLOGIES COM 942749102 706,279 26,713 3.93 66,200 4.55 0.0158
2019-08-13 2019-06-30 13F WATTS WATER TECHNOLOGIES CL A 942749102 679,566 43,190 6.79 63,322 23.12 0.0150
2019-05-13 2019-03-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 636,376 1,969 0.31 51,433 25.63 0.0127
2019-02-12 2018-12-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 634,407 -19,273 -2.95 40,939 -24.54 0.0115
2018-11-14 2018-09-30 13F WATTS WATER TECHNOLOGIES CL A 942749102 653,680 -28,417 -4.17 54,255 1.46 0.0133
2018-09-18 2018-06-30 13F/A-1 WATTS WATER TECHNOLOGIES CL A 942749102 682,097 -270,079 -28.36 53,476 -27.72 0.0136
2018-08-14 2018-06-30 13F WATTS WATER TECHNOLOGIES CL A 942749102 684,295 -267,881 53,649
2018-05-09 2018-03-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 952,176 3,219 0.34 73,984 2.65 0.0192
2018-02-14 2017-12-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 948,957 -4,202 -0.44 72,074 9.27 0.0183
2017-11-13 2017-09-30 13F WATTS WATER TECHNOLOGIES CL A 942749102 953,159 -1,343 -0.14 65,958 9.34 0.0172
2017-08-11 2017-06-30 13F WATTS WATER TECHNOLOGIES COM 942749102 954,502 -4,351 -0.45 60,324 0.90 0.0169
2017-05-12 2017-03-31 13F WATTS WATER TECHNOLOGIES COM 942749102 958,853 9,062 0.95 59,783 -3.46 0.0172
2017-02-13 2016-12-31 13F WATTS WATER TECHNOLOGIES COM 942749102 949,791 -59,829 -5.93 61,927 -5.40 0.0190
2016-11-09 2016-09-30 13F WATTS WATER TECHNOLOGIES COM 942749102 1,009,620 1,601 0.16 65,463 11.47 0.0204
2016-08-12 2016-06-30 13F WATTS WATER TECHNOLOGIES CL A 942749102 1,008,019 48,421 5.05 58,728 11.38 0.0191
2016-08-19 2016-03-31 13F/A-1 WATTS WATER TECHNOLOGIES CL A 942749102 959,598 7,603 0.80 52,727 11.51 0.0175
2016-05-13 2016-03-31 13F Watts Water Tech COMM 942749102 959,598 52,903
2016-02-12 2015-12-31 13F Watts Water Tech COMM 942749102 951,995 1,257 0.13 47,285 -5.84 0.0157
2015-11-12 2015-09-30 13F WATTS WATER TECHNOLOGIES COM 942749102 950,738 950,738 0.00 50,218 0.0168
2015-08-13 2015-06-30 13F Watts Water Tech COMM 942749102 0 -977,504 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Watts Water Tech COMM 942749102 977,504 49,767 5.36 53,792 -8.60 0.0162
2015-02-12 2014-12-31 13F Watts Water Tech COM 942749102 927,737 -4,918 -0.53 58,856 8.33 0.0178
2014-11-13 2014-09-30 13F Watts Water Tech COMM 942749102 932,655 50,433 5.72 54,328 -0.24 0.0171
2014-08-14 2014-06-30 13F WATTS WATER TECHNOLOGIES com 942749102 882,222 -59,136 -6.28 54,460 -1.43 0.0170
2014-05-14 2014-03-31 13F WATTS WATER TECHNOLOGIES COMM 942749102 941,358 22,537 2.45 55,249 -2.81 0.0174
2014-02-21 2013-12-31 13F/A-1 WATTS WATER TECHNOLOGIES COM 942749102 918,821 20,722 2.31 56,848 12.29 0.0182
2014-02-12 2013-12-31 13F WATTS WATER TECHNOLOGIES COM 942749102 918,821 56,848
2013-11-13 2013-09-30 13F WATTS WATER TECHNOLOGIES COM 942749102 898,099 31,811 3.67 50,626 28.89 0.0178
2013-08-09 2013-06-30 13F WATTS WATER TECHNOLOGIES COM 942749102 866,288 866,288 39,278 0.0142
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.