Mueller Industries, Inc.
US ˙ NYSE ˙ US6247561029

SecurityMLI / Mueller Industries, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership2,183,228 shares
Latest Disclosed Value $ 241,882,701
Dimensional Fund Advisors Lp reports 23.44% decrease in ownership of MLI / Mueller Industries, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 2,183,228 shares of Mueller Industries, Inc. (US:MLI) valued at $241,901,662 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,851,675 shares of Mueller Industries, Inc.. This represents a change in shares of -23.44% during the quarter. The current value of the position is $286,766,998 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)
2026-05-07 2026-03-31 13F MUELLER INDS COM 624756102 2,183,228 -668,447 -23.44 241,883 -26.12 0.0108
2026-02-12 2025-12-31 13F MUELLER INDS COM 624756102 2,851,675 -128,801 -4.32 327,385 8.64 0.0687
2025-11-12 2025-09-30 13F MUELLER INDS COM 624756102 2,980,476 -1,143 -0.04 301,346 27.17 0.0647
2025-08-12 2025-06-30 13F MUELLER INDS COM 624756102 2,981,619 -42,658 -1.41 236,955 2.91 0.0549
2025-05-13 2025-03-31 13F MUELLER INDS COM 624756102 3,024,277 -430,569 -12.46 230,264 -16.02 0.0572
2025-02-13 2024-12-31 13F MUELLER INDS COM 624756102 3,454,846 -434,315 -11.17 274,183 -4.85 0.0658
2024-11-07 2024-09-30 13F MUELLER INDS COM 624756102 3,889,161 -264,554 -6.37 288,171 21.84 0.0699
2024-08-09 2024-06-30 13F MUELLER INDS COM 624756102 4,153,715 -20,012 -0.48 236,512 5.07 0.0618
2024-05-10 2024-03-31 13F MUELLER INDS COM 624756102 4,173,727 1,645 0.04 225,089 14.42 0.0609
2024-02-07 2023-12-31 13F MUELLER INDS COM 624756102 4,172,082 2,055,506 97.11 196,718 23.65 0.0574
2023-11-09 2023-09-30 13F MUELLER INDS COM 624756102 2,116,576 51,820 2.51 159,088 -11.72 0.0522
2023-08-09 2023-06-30 13F MUELLER INDS COM 624756102 2,064,756 51,651 2.57 180,211 21.83 0.0574
2023-05-12 2023-03-31 13F MUELLER INDS COM 624756102 2,013,105 -74,664 -3.58 147,919 120,159.35 0.0498
2023-02-09 2022-12-31 13F MUELLER INDS COM 624756102 2,087,769 17,875 0.86 123 -99.90 0.0364
2022-11-10 2022-09-30 13F MUELLER INDS COM 624756102 2,069,894 32,613 1.60 123,034 13.33 0.0472
2022-08-12 2022-06-30 13F MUELLER INDS COM 624756102 2,037,281 40,772 2.04 108,563 0.38 0.0389
2022-05-13 2022-03-31 13F MUELLER INDS COM 624756102 1,996,509 25,778 1.31 108,155 -7.54 0.0333
2022-02-09 2021-12-31 13F MUELLER INDS COM 624756102 1,970,731 17,425 0.89 116,981 45.71 0.0354
2021-11-12 2021-09-30 13F MUELLER INDS COM 624756102 1,953,306 30,768 1.60 80,285 -3.58 0.0259
2021-08-12 2021-06-30 13F MUELLER INDS COM 624756102 1,922,538 -146,499 -7.08 83,263 -2.68 0.0264
2021-05-14 2021-03-31 13F MUELLER INDS COM 624756102 2,069,037 -43,000 -2.04 85,555 15.37 0.0283
2021-03-08 2020-12-31 13F/A-2 MUELLER INDS COM 624756102 2,112,037 -27,899 -1.30 74,154 28.05 0.0268
2021-02-11 2020-12-31 13F MUELLER INDS COM 624756102 2,112,037 -27,899 74,154 26,780.4833
2020-11-12 2020-09-30 13F MUELLER INDS COM 624756102 2,139,936 -17,806 -0.83 57,908 0.97 0.0246
2020-08-13 2020-06-30 13F MUELLER INDS COM 624756102 2,157,742 56,664 2.70 57,350 14.02 0.0252
2020-05-14 2020-03-31 13F MUELLER INDS COM 624756102 2,101,078 -4,076 -0.19 50,297 -24.75 0.0262
2020-02-14 2019-12-31 13F MUELLER INDS COM 624756102 2,105,154 34,963 1.69 66,839 12.58 0.0244
2019-11-12 2019-09-30 13F MUELLER INDS COM 624756102 2,070,191 -963 -0.05 59,372 -2.06 0.0231
2019-08-13 2019-06-30 13F MUELLER INDS COM 624756102 2,071,154 -10,078 -0.48 60,622 -7.06 0.0235
2019-08-12 2019-03-31 13F/A-2 MUELLER INDS COM 624756102 2,081,232 -3,431 -0.16 65,226 33.94 0.0260
2019-05-10 2019-03-31 13F MUELLER INDS COM 624756102 2,081,232 -3,431 65,226
2019-02-26 2018-12-31 13F/A-1 MUELLER INDS COM 624756102 2,084,663 20,396 0.99 48,698 -18.60 0.0221
2019-02-13 2018-12-31 13F MUELLER INDS COM 624756102 2,084,663 20,396 48,698
2018-11-13 2018-09-30 13F MUELLER INDS COM 624756102 2,064,267 38,446 1.90 59,822 0.07 0.0228
2018-08-10 2018-06-30 13F MUELLER INDS COM 624756102 2,025,821 25,315 1.27 59,783 14.24 0.0238
2018-05-11 2018-03-31 13F MUELLER INDS COM 624756102 2,000,506 71,312 3.70 52,333 -23.44 0.0218
2018-02-12 2017-12-31 13F MUELLER INDS COM 624756102 1,929,194 -89,926 -4.45 68,353 -3.14 0.0283
2017-11-13 2017-09-30 13F MUELLER INDS COM 624756102 2,019,120 -80,178 -3.82 70,568 10.40 0.0308
2017-08-11 2017-06-30 13F MUELLER INDS COM 624756102 2,099,298 -28,493 -1.34 63,923 -12.23 0.0295
2017-05-12 2017-03-31 13F MUELLER INDS COM 624756102 2,127,791 32,343 1.54 72,833 -13.02 0.0348
2017-02-09 2016-12-31 13F MUELLER INDS COM 624756102 2,095,448 -2,335 -0.11 83,735 23.12 0.0418
2016-11-10 2016-09-30 13F MUELLER INDS COM 624756102 2,097,783 -3,976 -0.19 68,010 1.50 0.0368
2016-08-09 2016-06-30 13F MUELLER INDS COM 624756102 2,101,759 81,885 4.05 67,002 12.75 0.0386
2016-05-13 2016-03-31 13F MUELLER INDS COM 624756102 2,019,874 124,350 6.56 59,425 15.68 0.0356
2016-02-10 2015-12-31 13F MUELLER INDS COM 624756102 1,895,524 119,207 6.71 51,370 -2.23 0.0320
2015-11-13 2015-09-30 13F MUELLER INDS COM 624756102 1,776,317 65,573 3.83 52,543 -11.54 0.0345
2015-08-14 2015-06-30 13F MUELLER INDS COM 624756102 1,710,744 37,543 2.24 59,397 -1.75 0.0364
2015-05-14 2015-03-31 13F MUELLER INDS COM 624756102 1,673,201 89,239 5.63 60,452 11.79 0.0382
2015-02-06 2014-12-31 13F MUELLER INDS COM 624756102 1,583,962 50,515 3.29 54,077 23.56 0.0355
2014-11-13 2014-09-30 13F MUELLER INDS COM 624756102 1,533,447 11,501 0.76 43,765 -2.22 0.0310
2014-08-08 2014-06-30 13F MUELLER INDS COM 624756102 1,521,946 28,676 1.92 44,760 -0.06 0.0311
2014-05-14 2014-03-31 13F MUELLER INDS COM 624756102 1,493,270 760,881 103.89 44,785 -2.95 0.0335
2014-02-12 2013-12-31 13F MUELLER INDS COM 624756102 732,389 16,790 2.35 46,148 15.84 0.0360
2013-11-13 2013-09-30 13F MUELLER INDS COM 624756102 715,599 -18,025 -2.46 39,837 7.68 0.0345
2013-08-15 2013-06-30 13F MUELLER INDS COM 624756102 733,624 733,624 36,997 0.0348
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.