Oppenheimer & Co Inc reports 123.95% increase in ownership of MWA / Mueller Water Products, Inc.

穆勒水產品公司

US ˙ NYSE ˙ US6247581084

Security	MWA / Mueller Water Products, Inc.
Institution	Oppenheimer & Co Inc
Latest Disclosed Ownership	28,086 shares
Latest Disclosed Value	$ 772,084

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 28,086 shares of Mueller Water Products, Inc. (US:MWA) valued at $772,084 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 12,541 shares of Mueller Water Products, Inc.. This represents a change in shares of 123.95% during the quarter. The current value of the position is $711,418 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-04-23	2026-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	28,086	15,545	123.95	772	159.06	0.0094
2026-02-02	2025-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	12,541	-880	-6.56	299	-12.87	0.0042
2025-11-06	2025-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	13,421	-30,544	-69.47	343	-67.61	0.0042
2025-07-31	2025-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	43,965	1,259	2.95	1,057	-2.67	0.0140
2025-04-23	2025-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	42,706	-223	-0.52	1,086	12.44	0.0164
2025-02-05	2024-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	42,929	581	1.37	966	5.12	0.0144
2024-11-05	2024-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	42,348	30,475	256.67	919	333.02	0.0140
2024-08-08	2024-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	11,873	700	6.27	213	18.44	0.0034
2024-05-07	2024-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	11,173	0	0.00	180	11.88	0.0030
2024-02-13	2023-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	11,173	400	3.71	161	17.65	0.0030
2023-11-08	2023-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	10,773	0	0.00	137	-21.84	0.0028
2023-08-03	2023-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	10,773	0	0.00	175	16.00	0.0035
2023-05-10	2023-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	10,773	0	0.00	150	30.43	0.0032
2023-02-08	2022-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	10,773	0	0.00	116	3.60	0.0026
2022-11-14	2022-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	10,773	-2,205	-16.99	111	-26.97	0.0026
2022-08-08	2022-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	12,978	0	0.00	152	-9.52	0.0033
2022-05-12	2022-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	12,978	-29,001	-69.08	168	-72.19	0.0030
2022-02-02	2021-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	41,979	-46	-0.11	604	-5.62	0.0106
2021-11-12	2021-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	42,025	8,444	25.15	640	32.23	0.0120
2021-08-03	2021-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	33,581	19,558	139.47	484	148.21	0.0087
2021-05-10	2021-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	14,023	900	6.86	195	20.37	0.0039
2021-02-11	2020-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	13,123	-750	-5.41	162	12.50	0.0034
2020-11-13	2020-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	13,873	0	0.00	144	9.92	0.0036
2020-08-11	2020-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	13,873	1,700	13.97	131	35.05	0.0034
2020-05-08	2020-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	12,173	-8,400	-40.83	97	-60.57	0.0029
2020-02-07	2019-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	20,573	1,500	7.86	246	14.42	0.0061
2019-10-31	2019-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	19,073	-6,600	-25.71	215	-14.68	0.0059
2019-08-09	2019-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	25,673	-4,205	-14.07	252	-16.00	0.0068
2019-04-24	2019-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	29,878	5,101	20.59	300	32.74	0.0080
2019-01-29	2018-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	24,777	12,001	93.93	226	53.74	0.0071
2018-10-26	2018-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	12,776	12,776		147		0.0037
2017-11-09	2017-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	0	-23,277	-100.00	0	-100.00
2017-08-09	2017-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	23,277	424	1.86	272	0.74	0.0075
2017-05-15	2017-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	22,853	-1,207	-5.02	270	-15.62	0.0076
2017-02-01	2016-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	24,060	-17,727	-42.42	320	-38.93	0.0093
2016-11-07	2016-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	41,787	41,787	0.00	524		0.0153
2015-11-13	2015-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	0	-16,000	-100.00	0	-100.00
2015-08-12	2015-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	16,000	0	0.00	146	-7.59	0.0041
2015-05-08	2015-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	16,000	0	0.00	158	-3.07	0.0043
2015-02-10	2014-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	16,000	-3,000	-15.79	163	3.82	0.0047
2014-11-12	2014-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	19,000	0	0.00	157	-4.27	0.0047
2014-08-14	2014-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	19,000	3,000	18.75	164	7.89	0.0049
2014-05-09	2014-03-31	13F	MUELLER WTR PRODS	COM SER A	624758108	16,000	0	0.00	152	1.33	0.0046
2014-02-12	2013-12-31	13F	MUELLER WTR PRODS	COM SER A	624758108	16,000	3,000	23.08	150	44.23	0.0048
2013-11-01	2013-09-30	13F	MUELLER WTR PRODS	COM SER A	624758108	13,000	0	0.00	104	15.56	0.0037
2013-08-14	2013-06-30	13F	MUELLER WTR PRODS	COM SER A	624758108	13,000	13,000		90		0.0035

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.