MLIMaterialsPrimary Metals

MUELLER INDUSTRIES INC

Funds holding it
561
N-PORT 2026Q1
Superinvestors
1 of 36
13F 2026-03-31
Fund-held value
$5.59B
across 561 funds

The business

Mueller Industries, Inc. (NYSE: MLI) is a leading manufacturer of copper, brass, and aluminum products serving construction, HVAC, refrigeration, and industrial markets. The company operates through three reportable segments: Piping Systems, Industrial Metals, and Climate. Mueller's website is www.muellerindustries.com.

The Piping Systems segment manufactures and distributes copper tube, fittings, line sets, and steel pipe nipples, while also reselling brass and plastic plumbing valves, malleable iron fittings, and faucets. This segment operates manufacturing facilities across the United States, Canada, the United Kingdom, South Korea, Mexico, and the Middle East through subsidiaries including Great Lakes Copper, European Operations, Jungwoo-Mueller, and Mueller Middle East. The Industrial Metals segment produces brass rod and shapes, aluminum and copper impact extrusions, brass and aluminum forgings, valves, fluid control solutions, specialty tube products, and wire and cable solutions. This segment serves OEMs in automotive, industrial, construction, and utility markets. The Climate segment designs and manufactures refrigeration valves, protection devices, high-pressure components, coaxial heat exchangers, and insulated HVAC flexible duct systems for commercial and residential applications.

Mueller employs approximately 4,832 employees, of which roughly 1,820 are represented by various unions. The company maintains manufacturing and distribution facilities throughout North America, Europe, and Asia, with significant operations in Mississippi, Michigan, Illinois, Arkansas, and Texas. The company's product portfolio serves diverse end markets including new housing construction, commercial building projects, repairs and remodeling, and various transportation and industrial applications.

Mueller's business model centers on manufacturing high-quality metal products and components while maintaining strategic distribution networks. The company sources raw materials including copper, brass, zinc, and aluminum through supply contracts and open market purchases. Recent acquisitions including Elkhart Products Corporation and Nehring Electrical Works Company have expanded Mueller's capabilities in plumbing products and energy infrastructure, respectively. The company competes with both domestic and international manufacturers across its product lines while maintaining market leadership positions in several categories including plumbing and air-conditioning service tube markets.

Sector
Materials
Industry
Primary Metals
HQ
COLLIERVILLE, TN
FY end
12/26
CIK
0000089439
SIC
3350

Ownership

Who holds MUELLER INDUSTRIES INC · N-PORT 2026Q1 · 13F 2026-03-31

Top fund holders

Fund% of fundValue
First Trust Rising Dividend Achievers ETF
RDVY · First Trust Exchange-Traded Fund VI
2.18%$433.12M
iShares Core S&P Mid-Cap ETF
IJH · iShares Trust
0.38%$407.24M
VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.02%$391.11M
VANGUARD SMALL-CAP INDEX FUND
VB · VANGUARD INDEX FUNDS
0.17%$283.50M
VANGUARD SMALL-CAP VALUE INDEX FUND
VBR · VANGUARD INDEX FUNDS
0.30%$180.53M

Superinvestors in MUELLER INDUSTRIES INC

Polen CapitalINCREASED +1.8%
Polen Capital Management
<0.1%

Share of each manager's reported 13F portfolio.

Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.

15 years of MUELLER INDUSTRIES INC's financials

Income statement, balance sheet and cash flow across 15 years, every filing with its disclosures, and each number traceable to the filing it came from — free with an account, no card required.

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