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Side-by-side financial comparison of MDU RESOURCES GROUP INC (MDU) and MUELLER INDUSTRIES INC (MLI). Click either name above to swap in a different company.

MUELLER INDUSTRIES INC is the larger business by last-quarter revenue ($962.4M vs $522.6M, roughly 1.8× MDU RESOURCES GROUP INC). MUELLER INDUSTRIES INC runs the higher net margin — 16.0% vs 14.6%, a 1.4% gap on every dollar of revenue. On growth, MUELLER INDUSTRIES INC posted the faster year-over-year revenue change (4.2% vs -1.6%). MUELLER INDUSTRIES INC produced more free cash flow last quarter ($121.4M vs $-336.0M). Over the past eight quarters, MUELLER INDUSTRIES INC's revenue compounded faster (6.4% CAGR vs -5.7%).

MDU Resources Group, Inc. is a U.S.-based corporation supplying products and services to regulated energy delivery and utilities related construction materials and services businesses. It is headquartered in Bismarck, North Dakota, and operates in 48 states.

Mueller Industries is an American manufacturing company that specializes in piping, industrial metals and climate machinery. It was founded in 1917 and is included on the Fortune 1000 list in 2022. The head office of the company is located in Memphis, Tennessee. Mueller Industries, Inc. is a multi-billion dollar revenue company that is publicly traded.

MDU vs MLI — Head-to-Head

Bigger by revenue
MLI
MLI
1.8× larger
MLI
$962.4M
$522.6M
MDU
Growing faster (revenue YoY)
MLI
MLI
+5.8% gap
MLI
4.2%
-1.6%
MDU
Higher net margin
MLI
MLI
1.4% more per $
MLI
16.0%
14.6%
MDU
More free cash flow
MLI
MLI
$457.4M more FCF
MLI
$121.4M
$-336.0M
MDU
Faster 2-yr revenue CAGR
MLI
MLI
Annualised
MLI
6.4%
-5.7%
MDU

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
MDU
MDU
MLI
MLI
Revenue
$522.6M
$962.4M
Net Profit
$76.3M
$153.7M
Gross Margin
Operating Margin
20.5%
17.9%
Net Margin
14.6%
16.0%
Revenue YoY
-1.6%
4.2%
Net Profit YoY
38.4%
11.7%
EPS (diluted)
$0.37
$1.37

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
MDU
MDU
MLI
MLI
Q4 25
$522.6M
$962.4M
Q3 25
$313.6M
$1.1B
Q2 25
$348.7M
$1.1B
Q1 25
$678.0M
$1.0B
Q4 24
$531.0M
$923.5M
Q3 24
$290.7M
$997.8M
Q2 24
$343.1M
$997.7M
Q1 24
$588.2M
$849.7M
Net Profit
MDU
MDU
MLI
MLI
Q4 25
$76.3M
$153.7M
Q3 25
$18.3M
$208.1M
Q2 25
$13.8M
$245.9M
Q1 25
$82.0M
$157.4M
Q4 24
$55.2M
$137.7M
Q3 24
$64.6M
$168.7M
Q2 24
$60.4M
$160.2M
Q1 24
$100.9M
$138.4M
Gross Margin
MDU
MDU
MLI
MLI
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
Q3 24
27.6%
Q2 24
27.3%
Q1 24
28.4%
Operating Margin
MDU
MDU
MLI
MLI
Q4 25
20.5%
17.9%
Q3 25
12.7%
25.6%
Q2 25
8.7%
26.7%
Q1 25
16.6%
20.6%
Q4 24
17.8%
18.4%
Q3 24
12.0%
20.7%
Q2 24
11.5%
21.0%
Q1 24
16.4%
21.6%
Net Margin
MDU
MDU
MLI
MLI
Q4 25
14.6%
16.0%
Q3 25
5.8%
19.3%
Q2 25
4.0%
21.6%
Q1 25
12.1%
15.7%
Q4 24
10.4%
14.9%
Q3 24
22.2%
16.9%
Q2 24
17.6%
16.1%
Q1 24
17.2%
16.3%
EPS (diluted)
MDU
MDU
MLI
MLI
Q4 25
$0.37
$1.37
Q3 25
$0.09
$1.88
Q2 25
$0.07
$2.22
Q1 25
$0.40
$1.39
Q4 24
$0.26
$1.21
Q3 24
$0.32
$1.48
Q2 24
$0.30
$1.41
Q1 24
$0.49
$1.21

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
MDU
MDU
MLI
MLI
Cash + ST InvestmentsLiquidity on hand
$28.2M
$1.4B
Total DebtLower is stronger
$2.7B
Stockholders' EquityBook value
$2.8B
$3.2B
Total Assets
$7.6B
$3.7B
Debt / EquityLower = less leverage
0.97×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
MDU
MDU
MLI
MLI
Q4 25
$28.2M
$1.4B
Q3 25
$75.9M
$1.3B
Q2 25
$58.8M
$1.1B
Q1 25
$59.5M
$873.6M
Q4 24
$66.9M
$1.1B
Q3 24
$88.3M
$969.6M
Q2 24
$78.8M
$825.7M
Q1 24
$72.7M
$1.4B
Total Debt
MDU
MDU
MLI
MLI
Q4 25
$2.7B
Q3 25
$2.4B
Q2 25
$2.2B
Q1 25
$2.2B
Q4 24
$2.3B
Q3 24
$2.3B
Q2 24
$2.3B
Q1 24
$2.3B
Stockholders' Equity
MDU
MDU
MLI
MLI
Q4 25
$2.8B
$3.2B
Q3 25
$2.7B
$3.1B
Q2 25
$2.7B
$2.9B
Q1 25
$2.7B
$2.7B
Q4 24
$2.7B
$2.8B
Q3 24
$3.1B
$2.7B
Q2 24
$3.0B
$2.5B
Q1 24
$3.0B
$2.4B
Total Assets
MDU
MDU
MLI
MLI
Q4 25
$7.6B
$3.7B
Q3 25
$7.2B
$3.7B
Q2 25
$6.9B
$3.5B
Q1 25
$7.0B
$3.2B
Q4 24
$7.0B
$3.3B
Q3 24
$8.2B
$3.2B
Q2 24
$8.0B
$3.1B
Q1 24
$7.8B
$2.9B
Debt / Equity
MDU
MDU
MLI
MLI
Q4 25
0.97×
Q3 25
0.86×
Q2 25
0.80×
Q1 25
0.80×
Q4 24
0.85×
Q3 24
0.76×
Q2 24
0.75×
Q1 24
0.76×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
MDU
MDU
MLI
MLI
Operating Cash FlowLast quarter
$80.6M
$141.2M
Free Cash FlowOCF − Capex
$-336.0M
$121.4M
FCF MarginFCF / Revenue
-64.3%
12.6%
Capex IntensityCapex / Revenue
79.7%
2.1%
Cash ConversionOCF / Net Profit
1.06×
0.92×
TTM Free Cash FlowTrailing 4 quarters
$-297.0M
$686.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
MDU
MDU
MLI
MLI
Q4 25
$80.6M
$141.2M
Q3 25
$57.9M
$310.1M
Q2 25
$117.4M
$190.6M
Q1 25
$217.5M
$113.6M
Q4 24
$60.5M
$140.1M
Q3 24
$140.2M
$231.4M
Q2 24
$136.5M
$100.8M
Q1 24
$165.1M
$173.6M
Free Cash Flow
MDU
MDU
MLI
MLI
Q4 25
$-336.0M
$121.4M
Q3 25
$-121.9M
$291.8M
Q2 25
$36.5M
$176.5M
Q1 25
$124.4M
$97.0M
Q4 24
$-95.8M
$111.2M
Q3 24
$673.0K
$205.7M
Q2 24
$26.5M
$91.6M
Q1 24
$48.1M
$157.2M
FCF Margin
MDU
MDU
MLI
MLI
Q4 25
-64.3%
12.6%
Q3 25
-38.9%
27.1%
Q2 25
10.5%
15.5%
Q1 25
18.4%
9.7%
Q4 24
-18.0%
12.0%
Q3 24
0.2%
20.6%
Q2 24
7.7%
9.2%
Q1 24
8.2%
18.5%
Capex Intensity
MDU
MDU
MLI
MLI
Q4 25
79.7%
2.1%
Q3 25
57.3%
1.7%
Q2 25
23.2%
1.2%
Q1 25
13.7%
1.7%
Q4 24
29.4%
3.1%
Q3 24
48.0%
2.6%
Q2 24
32.0%
0.9%
Q1 24
19.9%
1.9%
Cash Conversion
MDU
MDU
MLI
MLI
Q4 25
1.06×
0.92×
Q3 25
3.16×
1.49×
Q2 25
8.52×
0.78×
Q1 25
2.65×
0.72×
Q4 24
1.10×
1.02×
Q3 24
2.17×
1.37×
Q2 24
2.26×
0.63×
Q1 24
1.64×
1.25×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

MDU
MDU

Natural Gas Distribution$382.8M73%
Commercial Utility Sales$42.7M8%
Residential Utility Sales$33.7M6%
Pipelineand Midstream$31.1M6%
Natural Gas Transportation$17.2M3%
Industrial Utility Sales$10.1M2%
Natural Gas Storage$6.4M1%
Other Utility Sales$1.9M0%

MLI
MLI

Tube And Fittings$484.6M50%
Industrial Metals$252.2M26%
Valves And Plumbing Specialties$122.5M13%
Flex Duct And Other HVAC Components$80.8M8%
Other Products$14.9M2%

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