Watts Water Technologies, Inc.
MX ˙ BMV ˙ US9427491025
SecurityMX:WTS / Watts Water Technologies, Inc.
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership18,821 shares
Latest Disclosed Value $ 5,464
Natixis Advisors, L.p. reports 47.32% decrease in ownership of WTS / Watts Water Technologies, Inc.

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 18,821 shares of Watts Water Technologies, Inc. (MX:WTS) valued at $5,464 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 35,725 shares of Watts Water Technologies, Inc.. This represents a change in shares of -47.32% 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)
2026-05-13 2026-03-31 13F WATTS WTR TECH INC A COM 942749102 18,821 -16,904 -47.32 5 -44.44 0.0076
2026-02-10 2025-12-31 13F WATTS WTR TECH INC A COM 942749102 35,725 -828 -2.27 10 -10.00 0.0140
2025-11-13 2025-09-30 13F WATTS WTR TECH INC A COM 942749102 36,553 -18,035 -33.04 10 -23.08 0.0149
2025-08-13 2025-06-30 13F WATTS WTR TECH INC A COM 942749102 54,588 35,868 191.60 13 333.33 0.0213
2025-05-08 2025-03-31 13F WATTS WTR TECH INC A COM 942749102 18,720 -25,481 -57.65 4 -62.50 0.0071
2025-02-10 2024-12-31 13F WATTS WATER TECHNOLOGIES COM 942749102 44,201 1,546 3.62 9 0.00 0.0168
2024-11-06 2024-09-30 13F WATTS WTR TECH INC A COM 942749102 42,655 1,631 3.98 9 14.29 0.0172
2024-08-01 2024-06-30 13F WATTS WTR TECH INC A COM 942749102 41,024 -1,118 -2.65 8 -12.50 0.0164
2024-04-25 2024-03-31 13F WATTS WTR TECH INC A COM 942749102 42,142 -12,330 -22.64 9 -27.27 0.0206
2024-02-06 2023-12-31 13F WATTS WTR TECH INC A COM 942749102 54,472 20,670 61.15 11 120.00 0.0299
2023-11-13 2023-09-30 13F WATTS WTR TECH INC A COM 942749102 33,802 -12,838 -27.53 6 -37.50 0.0179
2023-08-15 2023-06-30 13F WATTS WTR TECH INC A COM 942749102 46,640 -10,996 -19.08 9 -11.11 0.0265
2023-05-11 2023-03-31 13F WATTS WTR TECH INC A COM 942749102 57,636 -10,705 -15.66 10 0.00 0.0334
2023-01-27 2022-12-31 13F WATTS WTR TECH INC A COM 942749102 68,341 27,098 65.70 10 -99.83 0.0378
2022-11-14 2022-09-30 13F WATTS WTR TECH INC A COM 942749102 41,243 -17,628 -29.94 5,186 -28.29 0.0219
2022-08-12 2022-06-30 13F WATTS WTR TECH INC A COM 942749102 58,871 22,998 64.11 7,232 44.41 0.0318
2022-05-12 2022-03-31 13F WATTS WTR TECH COM 942749102 35,873 25,862 258.34 5,008 157.61 0.0191
2022-02-08 2021-12-31 13F WATTS WTR TECH COM 942749102 10,011 10,011 1,944 0.0074
2021-02-12 2020-12-31 13F WATTS WTR TECH INC A COM 942749102 0 -42,544 -100.00 0 -100.00
2020-11-12 2020-09-30 13F WATTS WTR TECH INC A COM 942749102 42,544 -18,695 -30.53 4,261 -14.09 0.0268
2020-08-11 2020-06-30 13F WATTS WTR TECH COM 942749102 61,239 19,800 47.78 4,960 41.39 0.0329
2020-04-27 2020-03-31 13F WATTS WTR TECH COM 942749102 41,439 41,439 3,508 0.0286
2016-05-06 2016-03-31 13F WATTS WATER TECHNOLOGIES COM 942749102 0 0 0 0.0000
2016-02-12 2015-12-31 13F WATTS WATER TECHNOLOGIES COM 942749102 0 -48,233 -100.00 0 -100.00
2015-11-12 2015-09-30 13F WATTS WATER TECHNOLOGIES COM 942749102 48,233 -694 -1.42 2,547 0.39 0.0442
2015-08-14 2015-06-30 13F WATTS WATER TECHNOLOGIES COM 942749102 48,927 24,524 100.50 2,537 88.91 0.0431
2015-05-15 2015-03-31 13F WATTS WATER TECHNOLOGIES CL A 942749102 24,403 24,403 1,343 0.0236
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.