뮬러 산업, Inc.
US ˙ NYSE ˙ US6247561029

SecurityMLI / Mueller Industries, Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership676,052 shares
Latest Disclosed Value $ 74,906,562
Janus Henderson Group Plc reports 11.63% increase in ownership of MLI / Mueller Industries, Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 676,052 shares of Mueller Industries, Inc. (US:MLI) valued at $74,906,562 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 605,619 shares of Mueller Industries, Inc.. This represents a change in shares of 11.63% during the quarter. The current value of the position is $89,630,974 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-18 2026-03-31 13F/A-1 MUELLER INDS COM 624756102 676,052 70,433 11.63 74,907 7.70 0.0126
2026-05-15 2026-03-31 13F MUELLER INDS COM 624756102 676,052 70,433 11.63 74,907 7.70 0.0139
2026-02-17 2025-12-31 13F MUELLER INDS COM 624756102 605,619 120,169 24.75 69,552 41.62 0.0311
2025-11-14 2025-09-30 13F MUELLER INDS COM 624756102 485,450 87,261 21.91 49,113 55.28 0.0224
2025-08-14 2025-06-30 13F MUELLER INDS COM 624756102 398,189 17,574 4.62 31,628 8.44 0.0155
2025-05-15 2025-03-31 13F MUELLER INDS COM 624756102 380,615 -57,733 -13.17 29,166 -16.19 0.0160
2025-02-14 2024-12-31 13F MUELLER INDS COM 624756102 438,348 293,245 202.09 34,801 223.67 0.0177
2024-11-14 2024-09-30 13F MUELLER INDS COM 624756102 145,103 15,413 11.88 10,753 45.59 0.0055
2024-08-14 2024-06-30 13F MUELLER INDS COM 624756102 129,690 18,977 17.14 7,385 23.68 0.0040
2024-05-15 2024-03-31 13F MUELLER INDS COM 624756102 110,713 21,404 23.97 5,971 41.83 0.0033
2024-02-14 2023-12-31 13F MUELLER INDS COM 624756102 89,309 4,530 5.34 4,210 -33.92 0.0025
2023-11-14 2023-09-30 13F MUELLER INDS COM 624756102 84,779 10,996 14.90 6,371 -1.04 0.0042
2023-08-14 2023-06-30 13F MUELLER INDS COM 624756102 73,783 30,733 71.39 6,438 103.61 0.0040
2023-05-15 2023-03-31 13F MUELLER INDS COM 624756102 43,050 12,271 39.87 3,163 74.12 0.0021
2023-02-14 2022-12-31 13F MUELLER INDS COM 624756102 30,779 2,667 9.49 1,816 8.61 0.0013
2023-01-13 2022-09-30 13F/A-1 MUELLER INDS COM 624756102 28,112 -2,925 -9.42 1,672 1.09 0.0013
2022-11-14 2022-09-30 13F MUELLER INDS COM 624756102 28,112 -2,925 1,672 0.0004
2022-08-15 2022-06-30 13F MUELLER INDS COM 624756102 31,037 -4,078 -11.61 1,654 -12.99 0.0011
2022-05-16 2022-03-31 13F MUELLER INDS COM 624756102 35,115 24,648 235.48 1,901 206.12 0.0009
2022-02-14 2021-12-31 13F MUELLER INDS COM 624756102 10,467 5,269 101.37 621 190.19 0.0003
2021-11-16 2021-09-30 13F MUELLER INDS COM 624756102 5,198 5,198 214 0.0001
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.