Watts Water Technologies, Inc.
US ˙ NYSE ˙ US9427491025

SecurityWTS / Watts Water Technologies, Inc.
InstitutionQuantbot Technologies LP
Latest Disclosed Ownership12,413 shares
Latest Disclosed Value $ 3,603,370
Quantbot Technologies LP reports 277.52% increase in ownership of WTS / Watts Water Technologies, Inc.

On May 13, 2026 - Quantbot Technologies LP filed a 13F-HR form disclosing ownership of 12,413 shares of Watts Water Technologies, Inc. (US:WTS) valued at $3,603,370 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 3,288 shares of Watts Water Technologies, Inc.. This represents a change in shares of 277.52% during the quarter. The current value of the position is $3,905,750 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 WATTS WATER TECHNOLOGIES-A COM 942749102 12,413 9,125 277.52 3,603 297.24 0.1474
2026-02-10 2025-12-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 3,288 3,287 328,700.00 908 0.0302
2025-11-12 2025-09-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 1 -13,254 -99.99 0 -100.00 0.0000
2025-08-13 2025-06-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 13,255 13,255 3,259 0.0836
2025-05-13 2025-03-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 0 -7,078 -100.00 0 -100.00
2025-02-11 2024-12-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 7,078 5,655 397.40 1,439 389.12 0.0526
2024-11-13 2024-09-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 1,423 -7,600 -84.23 295 -82.22 0.0116
2024-08-09 2024-06-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 9,023 6,945 334.22 1,655 275.06 0.0801
2024-05-06 2024-03-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 2,078 2,078 442 0.0249
2023-02-13 2022-12-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 0 -4,689 -100.00 0 -100.00
2022-11-07 2022-09-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 4,689 -1,875 -28.56 589 -26.92 0.0445
2022-08-09 2022-06-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 6,564 6,564 806 0.0741
2021-08-12 2021-06-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 0 -5,130 -100.00 0 -100.00
2021-05-14 2021-03-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 5,130 5,130 609 0.0580
2020-08-13 2020-06-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 0 -462 -100.00 0 -100.00
2020-05-13 2020-03-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 462 462 39 0.0254
2020-02-10 2019-12-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 0 -1,089 -100.00 0 -100.00
2019-11-12 2019-09-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 1,089 1,089 102 0.0101
2019-05-13 2019-03-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 0 -8,500 -100.00 0 -100.00
2019-02-13 2018-12-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 8,500 -4,541 -34.82 548 -49.35 0.0536
2018-11-13 2018-09-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 13,041 13,041 1,082 0.0757
2017-11-07 2017-09-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 0 -2,282 -100.00 0 -100.00
2017-08-11 2017-06-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 2,282 2,035 823.89 144 860.00 0.0136
2017-05-10 2017-03-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 247 -1,590 -86.55 15 -87.39 0.0016
2017-02-09 2016-12-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 1,837 1,837 119 0.0132
2016-10-31 2016-09-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 0 -687 -100.00 0 -100.00
2016-08-02 2016-06-30 13F WATTS WATER TECHNOLOGIES-A COM 942749102 687 251 57.57 40 66.67 0.0043
2016-04-28 2016-03-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 436 -237 -35.22 24 -27.27 0.0038
2016-01-22 2015-12-31 13F WATTS WATER TECHNOLOGIES-A COM 942749102 673 673 33 0.0057
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.