What is the 13F Pro Quality Score for MLI?

13F Pro ranks MUELLER INDUSTRIES INC (MLI) on the 13F Pro Quality Score, a 0–100 composite of 32 fundamental signals including return on invested capital, free cash flow consistency, balance-sheet strength, earnings quality, growth durability, and valuation discipline. The score refreshes after each 10-K and 10-Q filing on SEC EDGAR. View MLI's current score at https://13fpro.ai/research/MLI (free sign-up required for the full ranking).

Which hedge funds own the most MLI stock?

Based on the most recent Form 13F-HR filings on SEC EDGAR, the largest reported institutional holders of MLI include BlackRock,, FIRST ADVISORS, VANGUARD CAPITAL MANAGEMENT. Holdings are reported quarterly within 45 days of quarter-end and updated on https://13fpro.ai/research/MLI as soon as new 13F filings post.

Where does 13F Pro source MLI data?

All MUELLER INDUSTRIES INC fundamentals and ownership data come directly from SEC EDGAR. MUELLER INDUSTRIES INC files with the SEC under CIK 89439. 13F Pro ingests XBRL financial facts from 10-K and 10-Q filings, Form 13F-HR institutional holdings, and Form 4 insider transactions, with no third-party rewrites or estimates.

What sector is MLI in?

MUELLER INDUSTRIES INC (MLI) is classified in the Materials sector. 13F Pro publishes sector-level fund flow analysis and quality leaders at https://13fpro.ai/research/sector/materials.

What drives MLI's revenue?

Per MUELLER INDUSTRIES INC's latest 10-Q filed with the SEC on 2026-04-22, the biggest revenue drivers are: Piping Systems ($760.5M, +18.9% YoY); Industrial Metals ($321.3M, +27.5% YoY); Climate ($123.8M, +0.5% YoY). Figures are extracted from the filing text and machine-verified against the document. Full breakdown at https://13fpro.ai/research/MLI.

What are MLI's largest expenses?

MUELLER INDUSTRIES INC's latest 10-Q reports these as the largest expense items: Selling, general, and administrative expense ($66.8M, +5.9% YoY); Depreciation and amortization ($16.7M, -2.7% YoY). Sourced directly from SEC EDGAR filing text for Q1 FY2026 (quarter ended March 28, 2026).

How often is MLI research updated on 13F Pro?

MLI's fundamentals refresh within hours of each new 10-K or 10-Q filing on SEC EDGAR. Institutional ownership updates after each quarterly 13F filing window. Insider transactions update after each Form 4 filing. The 13F Pro Quality Score recalculates after every fundamentals refresh.

MUELLER INDUSTRIES INC(MLI)Stock Analysis

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13F Pro Quality Score

77.5/100

Rank #84 of 2,879 stocksTOP 5%

View Materials peers →

Rankings refresh quarterly once 80% of peers have filed (~45 days after quarter-end). Next update: ~Aug 14, 2026.

Revenue Growth

68.7/100

Profitability

85.3/100

Balance Sheet

97.7/100

Earnings Quality

65.1/100

Free Cash Flow

71.6/100

Institutional Flow

63.3/100

Revenue Scale

76.2/100

Dilution Risk

69.0/100

MLI Stock Analysis & AI Quality Score

AI stock analysis and institutional research for MUELLER INDUSTRIES INC (MLI), a Materials sector company. 13F Pro's AI-powered ranking engine scores MLI at 77.5/100 on a 32-signal composite quality model, placing it at rank #84 of 2,879 stocks — the top 5% of the AI-ranked universe. MLI scores in the top quartile across balance sheet strength (97.7), profitability (85.3), revenue scale (76.2). Based on the latest XBRL financial filings (Q1 2026), MUELLER INDUSTRIES INC reports quarterly revenue of $1.2B, net income of $239.0M, an operating margin of 26.2%. Top institutional holders of MLI by reported 13-F value include BlackRock,, FIRST ADVISORS, VANGUARD CAPITAL MANAGEMENT, based on the most recent SEC filings. MLI trades on the NYSE exchange and files with the SEC under CIK 89439. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate MLI daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for MUELLER INDUSTRIES INC directly from SEC EDGAR. MUELLER INDUSTRIES INC's 13F Pro composite quality score has ranged between 56 and 78 since 2021, currently 77.5 — an improving long-term trajectory across 30 quarterly and live scoring snapshots.

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Fun facts about MUELLER INDUSTRIES INC

Quirks, history, and lore behind MLI — the kind of stuff that makes a stock memorable.

1
The Basics
U.S. industrial manufacturer · mid-cap · listed on the NYSE · headquartered in Tennessee.
2
The Numbers
Annual revenue in the range of $3–4 billion, with operating margins that make Wall Street smile — this is a high-margin, asset-heavy business that quietly mints cash.
3
The History
Tracing roots back to the mid-20th century, it grew aggressively through acquisitions into one of North America's dominant processors of a single, ancient metal.
4
The Secret
Its entire empire is built on copper and brass — tubing, fittings, valves, and rods — the unglamorous plumbing and HVAC guts hiding inside every building you've ever entered.
5
The Lore
It operates dozens of manufacturing facilities across the U.S., Europe, and beyond, and is considered the largest copper products manufacturer in North America — a title few people outside the trades have ever heard of.
6
The Giveaway
Its ticker is MLI, its name sounds like a German engineer, and if your house has copper pipes or brass fittings, there's a solid chance this Memphis company made them.

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What's Driving MLI's Business? Latest 10-Q Breakdown

AI-extracted from MUELLER INDUSTRIES INC's 10-Q filed 2026-04-22 — Q1 FY2026 (quarter ended March 28, 2026). Every figure is machine-verified against the filing text on SEC EDGAR.

Mueller Industries net sales grew 19.3% to $1.193B, driven by higher material prices and a $41.4M gain on Sherwood Valve sale, boosting net income 51.8% to $239M.

Biggest Revenue Drivers

Total revenue: $1,193.0M+19.3% YoY

Piping Systems$760.5M+18.9% YoY

Higher net selling prices on copper tube of $162.6M, partially offset by lower unit volume of $54.8M.

Industrial Metals$321.3M+27.5% YoY

Higher selling prices on brass rod and wire cable of $56.5M and higher unit volume of $21.5M, offset by Sherwood sale impact of $9.7M.

Climate$123.8M+0.5% YoY

Segment sales flat year-over-year.

Largest Expense Items

Selling, general, and administrative expense$66.8M+5.9% YoY

Higher employment and incentive compensation costs of $6.8M and higher legal and professional fees of $3.5M, partially offset by lower product-related costs.

Depreciation and amortization$16.7M-2.7% YoY

Consistent with prior year.

Watch Items from the Filing

CBP denied protests on $5.1M in duties and accrued interest for import entries from 2007–2008 period; Company is evaluating appeal to U.S. Court of International Trade.
Environmental remediation obligations estimated at $13.7M–$14.8M over 30 years for Shasta Area Mine Sites; $1.9M–$2.0M for Lead Refinery over 11 years.
Announced acquisition of Bison Metals Technologies for $142M in cash on March 30, 2026, to expand Piping Systems; complements existing copper tube operations.
Lower unit volume in Piping Systems (core product lines down $54.8M) offset by strong pricing; Climate segment operating income declined 6.3% despite flat sales due to higher material costs.

AI-extracted and verified against SEC EDGAR filing text. Not investment advice.

Read the full 10-Q on SEC EDGAR →Share on X

Revenue

Q1 2026

$1.2B

Net Income

Q1 2026

$239.0M

Free Cash Flow

Q1 2026

$62.5M

Operating Margin

Q1 2026

26.2%

Revenue & Net Income

Earnings Per Share

Key Financials Over Time

Export Financial Table · Pro+

Revenue

-14.1% YoY

$3.42BFY 2023

FY20 $2.40BFY21 $3.77BFY22 $3.98BFY23 $3.42B

Net Income

-8.4% YoY

$602.9MFY 2023

FY20 $139.5MFY21 $468.5MFY22 $658.3MFY23 $602.9M

Operating Income

-13.8% YoY

$756.1MFY 2023

FY20 $245.8MFY21 $655.8MFY22 $877.1MFY23 $756.1M

EPS (Diluted)

+82.1% YoY

$2.65FY 2023

FY20 $0.62FY21 $1.03FY22 $1.46FY23 $2.65

Total Assets

+23.1% YoY

$2.76BFY 2023

FY20 $1.53BFY21 $1.73BFY22 $2.24BFY23 $2.76B

Total Debt

-72.4% YoY

$981.0KFY 2023

FY20 $410.7MFY21 $4.6MFY22 $3.5MFY23 $981.0K

Op. Cash Flow

-7.1% YoY

$672.8MFY 2023

FY20 $245.1MFY21 $311.7MFY22 $723.9MFY23 $672.8M

Metric	FY 2023	FY 2022	FY 2021	FY 2020	FY 2019	FY 2018
Revenue	$3.42B -14.1%	$3.98B +5.7%	$3.77B +57.2%	$2.40B -1.3%	$2.43B -3.1%	$2.51B
Net Income	$602.9M -8.4%	$658.3M +40.5%	$468.5M +235.9%	$139.5M +38.2%	$101.0M -3.3%	$104.5M
Operating Income	$756.1M -13.8%	$877.1M +33.7%	$655.8M +166.8%	$245.8M +28.4%	$191.4M +10.7%	$173.0M
EPS (Diluted)	$2.65 +82.1%	$1.46 +41.3%	$1.03 +66.8%	$0.62 +38.0%	$0.45 -1.6%	$0.46
Total Assets	$2.76B +23.1%	$2.24B +29.7%	$1.73B +13.1%	$1.53B +11.5%	$1.37B +0.1%	$1.37B
Total Debt	$981.0K -72.4%	$3.5M -22.2%	$4.6M -98.9%	$410.7M +2.2%	$401.9M -20.4%	$504.7M
Operating Cash Flow	$672.8M -7.1%	$723.9M +132.3%	$311.7M +27.2%	$245.1M +22.2%	$200.5M +19.4%	$167.9M

AI Insight: MLI Financial Trends

Revenue surged 19% year-over-year in Q1 2026 to $1.193B while operating income jumped 51% to $312M, showing strong operational leverage.

• Revenue grew from $1.000B in Q1 2025 to $1.193B in Q1 2026, up 19% year-over-year.

• Operating income expanded from $206M in Q1 2025 to $312M in Q1 2026, a 51% increase.

• Company eliminated all debt, moving from $1M in Q2 2024 to $0M by Q2 2025.

• Equity grew consistently from $2.546B in Q2 2024 to $3.334B in Q1 2026.

⚠ Operating cash flow dropped sharply to $80M in Q1 2026 from $310M in Q3 2025.

⚠ Q4 quarters show consistent revenue softness, declining to $962M in Q4 2025 from peak levels.

AI Insight: MLI Ratio Trends

Mueller Industries' profitability has surged with operating margin jumping from 17.9% in Q4 2025 to 26.2% in Q1 2026.

• Operating margin expanded dramatically from 17.9% in Q4 2025 to 26.2% in Q1 2026.

• Net profit margin improved from 16.0% in Q4 2025 to 20.0% in Q1 2026.

• ROIC rebounded strongly from 21.4% in Q4 2025 to 37.5% in Q1 2026.

• Company maintains zero debt with D/E ratio of 0.00 across all quarters.

⚠ Significant quarterly volatility in margins, with Q4 2025 showing sharp profitability decline before Q1 2026 recovery.

⚠ ROE fluctuated from 19.1% in Q4 2025 to 28.7% in Q1 2026, indicating earnings volatility.

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Available Research

13F Pro tracks comprehensive data for MUELLER INDUSTRIES INC including:

SEC EDGAR filings (10-K, 10-Q, 8-K)

XBRL financial facts (revenue, EPS, margins)

Insider transactions (Form 4)

Institutional 13F holdings

Quality rankings (32 signals)

AI analyst debates & daily meetings

Historical financial trends

Peer comparison & sector analysis

Top Institutional Holders of MLI

BlackRock, Inc.
$1.3B11,636,458 sh
FIRST TRUST ADVISORS LP
$619.8M5,594,217 sh
VANGUARD CAPITAL MANAGEMENT LLC
$551.2M4,974,802 sh
VANGUARD PORTFOLIO MANAGEMENT LLC
$545.4M4,922,677 sh
AQR CAPITAL MANAGEMENT LLC
$536.0M4,877,511 sh
STATE STREET CORP
$387.8M3,499,899 sh
GEODE CAPITAL MANAGEMENT, LLC
$331.1M2,988,136 sh
GOLDMAN SACHS GROUP INC
$250.3M2,259,132 sh
DIMENSIONAL FUND ADVISORS LP
$241.9M2,183,228 sh
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
$233.8M2,109,729 sh

Fund	Value	Shares
BlackRock, Inc.	$1.3B	11,636,458
FIRST TRUST ADVISORS LP	$619.8M	5,594,217
VANGUARD CAPITAL MANAGEMENT LLC	$551.2M	4,974,802
VANGUARD PORTFOLIO MANAGEMENT LLC	$545.4M	4,922,677
AQR CAPITAL MANAGEMENT LLC	$536.0M	4,877,511
STATE STREET CORP	$387.8M	3,499,899
GEODE CAPITAL MANAGEMENT, LLC	$331.1M	2,988,136
GOLDMAN SACHS GROUP INC	$250.3M	2,259,132
DIMENSIONAL FUND ADVISORS LP	$241.9M	2,183,228
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	$233.8M	2,109,729

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Is MLI a good stock to buy?

13F Pro's AI-powered analysis of MUELLER INDUSTRIES INC (MLI) draws on SEC EDGAR-sourced fundamentals, institutional 13F holdings, and insider Form 4 transactions in the Materials sector (listed on NYSE). The 32-signal AI Quality Score, current rank, and full bull/bear verdict for MLI are available on the MLI stock profile dashboard — with the same data, AI insights, ratios, and institutional activity refreshed after every 10-K, 10-Q, 13F, and Form 4 filing.

Which hedge funds own MLI?

Institutional investors are required to disclose their holdings quarterly via SEC Form 13F. 13F Pro aggregates these filings to show which hedge funds, mutual funds, and asset managers are buying or selling MLI. Combined with insider transaction data from Form 4 filings and AI-powered analysis from 10 specialized research agents, 13F Pro provides a comprehensive view of MUELLER INDUSTRIES INC's investment landscape.