Mueller Industries, Inc.
US ˙ NYSE ˙ US6247561029

SecurityMLI / Mueller Industries, Inc.
InstitutionMan Group plc
Latest Disclosed Ownership155,221 shares
Latest Disclosed Value $ 17,198,487
Man Group plc reports 5.81% decrease in ownership of MLI / Mueller Industries, Inc.

On May 15, 2026 - Man Group plc filed a 13F-HR form disclosing ownership of 155,221 shares of Mueller Industries, Inc. (US:MLI) valued at $17,198,487 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 164,794 shares of Mueller Industries, Inc.. This represents a change in shares of -5.81% during the quarter. The current value of the position is $20,388,278 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 INDS COM 624756102 155,221 -9,573 -5.81 17,198 -9.09 0.0312
2026-02-17 2025-12-31 13F MUELLER INDS COM 624756102 164,794 -112,618 -40.60 18,918 -32.55 0.0322
2025-11-14 2025-09-30 13F MUELLER INDS COM 624756102 277,412 136,291 96.58 28,049 150.12 0.0488
2025-08-14 2025-06-30 13F MUELLER INDS COM 624756102 141,121 -43,601 -23.60 11,215 -20.26 0.0214
2025-05-15 2025-03-31 13F MUELLER INDS COM 624756102 184,722 -14,771 -7.40 14,065 -11.16 0.0357
2025-02-14 2024-12-31 13F MUELLER INDS COM 624756102 199,493 -14,519 -6.78 15,832 -0.17 0.0417
2024-11-14 2024-09-30 13F MUELLER INDS COM 624756102 214,012 20,556 10.63 15,858 43.97 0.0413
2024-08-14 2024-06-30 13F MUELLER INDS COM 624756102 193,456 29,277 17.83 11,015 24.41 0.0278
2024-05-15 2024-03-31 13F MUELLER INDS COM 624756102 164,179 21,672 15.21 8,854 31.78 0.0223
2024-02-14 2023-12-31 13F MUELLER INDS COM 624756102 142,507 6,719 -22.06 0.0187
2023-11-14 2023-09-30 13F MUELLER INDS COM 624756102 8,621 0.87 0.0267
2023-08-14 2023-06-30 13F MUELLER INDS COM 624756102 97,934 8,548 66.87 0.0264
2023-05-15 2023-03-31 13F MUELLER INDS COM 624756102 5,122 74.87 0.0182
2023-02-14 2022-12-31 13F MUELLER INDS COM 624756102 49,658 31,334 171.00 2,930 168.96 0.0105
2022-11-14 2022-09-30 13F MUELLER INDS COM 624756102 18,324 18,324 1,089 0.0051
2022-05-16 2022-03-31 13F MUELLER INDS COM 624756102 0 -4,600 -100.00 0 -100.00
2022-02-14 2021-12-31 13F MUELLER INDS COM 624756102 4,600 -10,149 -68.81 273 -54.95 0.0009
2021-11-15 2021-09-30 13F MUELLER INDS COM 624756102 14,749 14,749 606 0.0021
2021-08-16 2021-06-30 13F MUELLER INDS COM 624756102 0 -15,806 -100.00 0 -100.00
2021-05-17 2021-03-31 13F MUELLER INDS COM 624756102 15,806 -85,595 -84.41 654 -81.63 0.0029
2021-02-16 2020-12-31 13F MUELLER INDS COM 624756102 101,401 71,201 235.76 3,561 335.86 0.0156
2020-11-16 2020-09-30 13F MUELLER INDS COM 624756102 30,200 -1,200 -3.82 817 -2.16 0.0032
2020-08-14 2020-06-30 13F MUELLER INDS COM 624756102 31,400 -1,000 -3.09 835 7.60 0.0042
2020-05-15 2020-03-31 13F MUELLER INDS COM 624756102 32,400 -900 -2.70 776 -26.58 0.0050
2020-02-18 2019-12-31 13F MUELLER INDS COM 624756102 33,300 -200 -0.60 1,057 9.99 0.0035
2019-11-14 2019-09-30 13F MUELLER INDS COM 624756102 33,500 33,500 961 0.0036
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.