Mueller Water Products, Inc.
US ˙ NYSE ˙ US6247581084

SecurityMWA / Mueller Water Products, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership2,167,702 shares
Latest Disclosed Value $ 59,590,187
Morgan Stanley reports 5.27% increase in ownership of MWA / Mueller Water Products, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 2,167,702 shares of Mueller Water Products, Inc. (US:MWA) valued at $59,590,128 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 2,059,150 shares of Mueller Water Products, Inc.. This represents a change in shares of 5.27% during the quarter. The current value of the position is $54,907,892 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)
2026-05-15 2026-03-31 13F MUELLER WTR PRODS COM SER A 624758108 2,167,702 108,552 5.27 59,590 21.49 0.0036
2026-05-27 2025-12-31 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 2,059,150 299,968 17.05 49,049 9.25 0.0029
2026-02-13 2025-12-31 13F MUELLER WTR PRODS COM SER A 624758108 2,059,150 299,968 49,049 0.0029
2026-05-27 2025-09-30 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 1,759,182 -33,485 -1.87 44,894 4.17 0.0027
2025-11-14 2025-09-30 13F MUELLER WTR PRODS COM SER A 624758108 1,759,182 -33,485 44,894 0.0027
2025-08-15 2025-06-30 13F MUELLER WTR PRODS COM SER A 624758108 1,792,667 71,227 4.14 43,096 -1.52 0.0028
2025-05-15 2025-03-31 13F MUELLER WTR PRODS COM SER A 624758108 1,721,440 385,989 28.90 43,759 45.64 0.0031
2025-05-15 2024-12-31 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 1,335,451 -286,579 -17.67 30,048 -14.63 0.0021
2025-02-14 2024-12-31 13F MUELLER WTR PRODS COM SER A 624758108 1,335,451 -286,579 30,048 0.0021
2025-05-14 2024-09-30 13F/A-2 MUELLER WTR PRODS COM SER A 624758108 1,622,030 -414,308 -20.35 35,198 -3.54 0.0026
2025-02-14 2024-09-30 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 1,622,030 -414,308 35,198 0.0026
2024-11-14 2024-09-30 13F MUELLER WTR PRODS COM SER A 624758108 1,622,030 -414,308 35,198 0.0003
2025-05-14 2024-06-30 13F/A-2 MUELLER WTR PRODS COM SER A 624758108 2,036,338 742,904 57.44 36,491 75.34 0.0028
2024-10-17 2024-06-30 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 2,036,338 742,904 36,491 0.0028
2024-08-14 2024-06-30 13F MUELLER WTR PRODS COM SER A 624758108 2,036,338 742,904 36,491 0.0028
2024-10-17 2024-03-31 13F/A-2 MUELLER WTR PRODS COM SER A 624758108 1,293,434 -210,300 -13.99 20,811 -3.89 0.0017
2024-08-16 2024-03-31 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 1,293,434 -210,300 20,811 0.0002
2024-05-15 2024-03-31 13F MUELLER WTR PRODS COM SER A 624758108 1,293,434 -210,300 20,811 0.0017
2024-08-16 2023-12-31 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 1,503,734 123,820 8.97 21,654 23.75 0.0019
2024-02-13 2023-12-31 13F MUELLER WTR PRODS COM SER A 624758108 1,503,734 123,820 21,654 0.0019
2023-11-15 2023-09-30 13F MUELLER WTR PRODS COM SER A 624758108 1,379,914 168,493 13.91 17,497 -11.01 0.0018
2023-08-14 2023-06-30 13F MUELLER WTR PRODS COM SER A 624758108 1,211,421 177,621 17.18 19,661 36.43 0.0019
2023-05-15 2023-03-31 13F MUELLER WTR PRODS COM SER A 624758108 1,033,800 -146,409 -12.41 14,411 13.48 0.0015
2023-02-14 2022-12-31 13F MUELLER WTR PRODS COM SER A 624758108 1,180,209 453,923 62.50 12,699 70.27 0.0014
2022-11-14 2022-09-30 13F MUELLER WTR PRODS COM SER A 624758108 726,286 -72,099 -9.03 7,458 -20.37 0.0010
2022-10-27 2022-06-30 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 798,385 142,486 21.72 9,366 10.53 0.0012
2022-08-15 2022-06-30 13F MUELLER WTR PRODS COM SER A 624758108 798,385 142,486 9,366 0.0002
2022-10-27 2022-03-31 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 655,899 96,850 17.32 8,474 5.28 0.0011
2022-05-13 2022-03-31 13F MUELLER WTR PRODS COM SER A 624758108 655,899 96,850 8,474 0.0011
2022-02-14 2021-12-31 13F MUELLER WTR PRODS COM SER A 624758108 559,049 -223,882 -28.60 8,049 -32.45 0.0010
2021-11-15 2021-09-30 13F MUELLER WTR PRODS COM SER A 624758108 782,931 -8,637 -1.09 11,916 4.39 0.0016
2021-08-23 2021-06-30 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 791,568 66,412 9.16 11,415 13.32 0.0015
2021-08-16 2021-06-30 13F MUELLER WTR PRODS COM SER A 624758108 791,568 66,412 11,415 0.0003
2021-05-17 2021-03-31 13F MUELLER WTR PRODS COM SER A 624758108 725,156 -82,345 -10.20 10,073 0.76 0.0015
2021-02-16 2020-12-31 13F MUELLER WTR PRODS COM SER A 624758108 807,501 54,946 7.30 9,997 27.86 0.0015
2020-11-13 2020-09-30 13F MUELLER WTR PRODS COM SER A 624758108 752,555 -25,900 -3.33 7,819 6.50 0.0015
2020-08-14 2020-06-30 13F MUELLER WTR PRODS COM SER A 624758108 778,455 15,017 1.97 7,342 20.07 0.0016
2020-05-26 2020-03-31 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 763,438 -432,700 -36.17 6,115 -57.32 0.0017
2020-05-15 2020-03-31 13F MUELLER WTR PRODS COM SER A 624758108 763,438 -432,700 6,115 469.7595
2020-02-14 2019-12-31 13F MUELLER WTR PRODS COM SER A 624758108 1,196,138 154,822 14.87 14,329 22.42 0.0033
2019-11-14 2019-09-30 13F MUELLER WTR PRODS COM SER A 624758108 1,041,316 7,757 0.75 11,705 15.31 0.0031
2019-08-14 2019-06-30 13F MUELLER WTR PRODS COM SER A 624758108 1,033,559 -446,396 -30.16 10,151 -31.68 0.0027
2019-05-15 2019-03-31 13F MUELLER WTR PRODS COM SER A 624758108 1,479,955 60,873 4.29 14,858 15.05 0.0042
2019-02-14 2018-12-31 13F MUELLER WTR PRODS COM SER A 624758108 1,419,082 -1,068,884 -42.96 12,914 -54.90 0.0039
2019-04-23 2018-09-30 13F/A-2 MUELLER WTR PRODS COM SER A 624758108 2,487,966 808,686 48.16 28,636 45.50 0.0072
2018-11-20 2018-09-30 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 2,487,966 0 28,636 0.0072
2018-11-14 2018-09-30 13F MUELLER WTR PRODS COM SER A 624758108 2,487,966 808,686 28,636
2019-04-23 2018-06-30 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 1,679,280 -305,716 -15.40 19,681 -8.79 0.0053
2018-08-14 2018-06-30 13F MUELLER WTR PRODS COM SER A 624758108 1,679,280 -305,716 19,681
2019-04-23 2018-03-31 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 1,984,996 172,451 9.51 21,577 -5.00 0.0060
2018-05-14 2018-03-31 13F MUELLER WTR PRODS COM SER A 624758108 1,984,996 172,451 21,577
2019-04-23 2017-12-31 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 1,812,545 160,520 9.72 22,712 7.40 0.0062
2018-02-14 2017-12-31 13F MUELLER WTR PRODS COM SER A 624758108 1,812,545 160,520 22,712
2017-11-14 2017-09-30 13F MUELLER WTR PRODS COM SER A 624758108 1,652,025 190,830 13.06 21,147 23.91 0.0063
2017-08-11 2017-06-30 13F MUELLER WTR PRODS COM SER A 624758108 1,461,195 -511,294 -25.92 17,067 -26.80 0.0052
2017-05-22 2017-03-31 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 1,972,489 506,177 34.52 23,314 19.45 0.0072
2017-05-12 2017-03-31 13F MUELLER WTR PRODS COM SER A 624758108 1,972,489 23,314
2017-02-22 2016-12-31 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 1,466,312 210,546 16.77 19,517 23.85 0.0064
2017-02-13 2016-12-31 13F MUELLER WTR PRODS COM SER A 624758108 1,466,312 19,517
2016-11-10 2016-09-30 13F MUELLER WTR PRODS COM SER A 624758108 1,255,766 -18,686 -1.47 15,759 8.27 0.0054
2016-08-12 2016-06-30 13F MUELLER WTR PRODS COM SER A 624758108 1,274,452 292,851 29.83 14,555 50.07 0.0053
2016-05-12 2016-03-31 13F MUELLER WTR PRODS COM SER A 624758108 981,601 135,939 16.07 9,699 33.37 0.0037
2016-02-09 2015-12-31 13F MUELLER WTR PRODS COM SER A 624758108 845,662 -53,107 -5.91 7,272 5.62 0.0026
2016-02-08 2015-09-30 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 898,769 71,953 8.70 6,885 -8.50 0.0025
2015-11-09 2015-09-30 13F MUELLER WTR PRODS COM SER A 624758108 898,769 6,885
2015-08-12 2015-06-30 13F MUELLER WTR PRODS COM SER A 624758108 826,816 43,741 5.59 7,525 -2.45 0.0026
2015-05-14 2015-03-31 13F MUELLER WTR PRODS COM SER A 624758108 783,075 -229,242 -22.65 7,714 -25.60 0.0028
2015-02-13 2014-12-31 13F MUELLER WTR PRODS COM SER A 624758108 1,012,317 27,353 2.78 10,368 27.14 0.0038
2014-12-16 2014-09-30 13F/A-1 MUELLER WTR PRODS COM SER A 624758108 984,964 -991,609 -50.17 8,155 -56.57 0.0031
2014-11-14 2014-09-30 13F MUELLER WTR PRODS COM SER A 624758108 984,964 8,155
2014-05-13 2014-03-31 13F MUELLER WTR PRODS COM SER A 624758108 1,976,573 -11,745 -0.59 18,777 0.78 0.0079
2014-02-13 2013-12-31 13F MUELLER WTR PRODS COM SER A 624758108 1,988,318 298,848 17.69 18,631 38.02 0.0079
2013-11-13 2013-09-30 13F MUELLER WTR PRODS INC COM S COM 624758108 1,689,470 -1,106,050 -39.57 13,499 -30.12 0.0064
2013-08-08 2013-06-30 13F MUELLER WTR PRODS INC COM S COM 624758108 2,795,520 2,795,520 19,317 0.0097
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.