Mueller Industries, Inc.
DE ˙ DB ˙ US6247561029
€ 110,10 ↑3.95 (3.72%)
2026-06-03
PREÇO DA AÇÃO
SecurityDE:MUD / Mueller Industries, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership268,396 shares
Latest Disclosed Value $ 30,811,110
Sei Investments Co reports 29.19% increase in ownership of MUD / Mueller Industries, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 268,396 shares of Mueller Industries, Inc. (DE:MUD) valued at $26,168,610 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 207,753 shares of Mueller Industries, Inc.. This represents a change in shares of 29.19% during the quarter. The current value of the position is $29,550,400 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)
2026-02-13 2025-12-31 13F MUELLER INDS COM 624756102 268,396 60,643 29.19 30,811 46.68 0.0304
2025-11-13 2025-09-30 13F MUELLER INDS COM 624756102 207,753 58,786 39.46 21,007 77.43 0.0226
2025-08-14 2025-06-30 13F MUELLER INDS COM 624756102 148,967 62,998 73.28 11,839 80.86 0.0137
2025-05-14 2025-03-31 13F/A-1 MUELLER INDS COM 624756102 85,969 -10,862 -11.22 6,546 -14.80 0.0084
2025-05-13 2025-03-31 13F MUELLER INDS COM 624756102 92,670 -4,161 7,290 0.0079
2025-02-11 2024-12-31 13F MUELLER INDS COM 624756102 96,831 -22,223 -18.67 7,684 -12.91 0.0099
2024-11-12 2024-09-30 13F MUELLER INDS COM 624756102 119,054 -13,916 -10.47 8,822 16.52 0.0115
2024-08-13 2024-06-30 13F MUELLER INDS COM 624756102 132,970 35,306 36.15 7,571 43.74 0.0107
2024-05-07 2024-03-31 13F MUELLER INDS COM 624756102 97,664 -13,613 -12.23 5,267 0.40 0.0077
2024-02-14 2023-12-31 13F MUELLER INDS COM 624756102 111,277 54,391 95.61 5,247 22.71 0.0084
2023-11-14 2023-09-30 13F MUELLER INDS COM 624756102 56,886 -6,440 -10.17 4,276 -22.65 0.0077
2023-08-11 2023-06-30 13F MUELLER INDS COM 624756102 63,326 -76,163 -54.60 5,527 -46.07 0.0096
2023-05-12 2023-03-31 13F MUELLER INDS COM 624756102 139,489 51,536 58.59 10,250 97.51 0.0190
2023-02-10 2022-12-31 13F MUELLER INDS COM 624756102 87,953 9,992 12.82 5,189 12.00 0.0115
2022-11-14 2022-09-30 13F MUELLER INDS COM 624756102 77,961 30,373 63.82 4,633 82.55 0.0103
2022-08-15 2022-06-30 13F MUELLER INDS COM 624756102 47,588 19,468 69.23 2,538 66.43 0.0055
2022-05-13 2022-03-31 13F MUELLER INDS COM 624756102 28,120 640 2.33 1,525 -6.56 0.0031
2022-02-14 2021-12-31 13F MUELLER INDS COM 624756102 27,480 12,094 78.60 1,632 158.64 0.0031
2021-11-12 2021-09-30 13F MUELLER INDS COM 624756102 15,386 -1,092 -6.63 631 -11.75 0.0013
2021-08-06 2021-06-30 13F MUELLER INDS COM 624756102 16,478 -1,348 -7.56 715 6.56 0.0016
2021-05-12 2021-03-31 13F MUELLER INDS COM 624756102 17,826 -7,453 -29.48 671 -24.44 0.0017
2021-02-08 2020-12-31 13F MUELLER INDS COM 624756102 25,279 6,866 37.29 888 77.96 0.0023
2020-12-04 2020-09-30 13F/A-1 MUELLER INDS COM 624756102 18,413 18,413 499 0.0014
2020-11-06 2020-09-30 13F MUELLER INDS COM 624756102 18,413 18,413 499 1,201.4811
2019-08-14 2019-06-30 13F MUELLER INDS COM 624756102 0 -2,767 -100.00 0 -100.00
2019-05-15 2019-03-31 13F MUELLER INDS COM 624756102 2,767 2,767 87 0.0003
2018-11-08 2018-09-30 13F MUELLER INDS COM 624756102 0 -16 -100.00 0 0.0000
2018-08-03 2018-06-30 13F MUELLER INDS COM 624756102 16 -44 -73.33 0 -100.00
2018-05-11 2018-03-31 13F MUELLER INDS COM 624756102 60 -29 -32.58 2 -33.33 0.0000
2018-02-08 2017-12-31 13F MUELLER INDS COM 624756102 89 29 48.33 3 50.00 0.0000
2017-11-06 2017-09-30 13F MUELLER INDS COM 624756102 60 -3 -4.76 2 0.00 0.0000
2017-07-31 2017-06-30 13F MUELLER INDS COM 624756102 63 63 2 0.0000
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.