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

MDU RESOURCES GROUP INC is the larger business by last-quarter revenue ($522.6M vs $280.0M, roughly 1.9× CALIX, INC). MDU RESOURCES GROUP INC runs the higher net margin — 14.6% vs 4.0%, a 10.6% gap on every dollar of revenue. On growth, CALIX, INC posted the faster year-over-year revenue change (27.1% vs -1.6%). CALIX, INC produced more free cash flow last quarter ($6.5M vs $-336.0M). Over the past eight quarters, CALIX, INC's revenue compounded faster (18.9% CAGR vs -5.7%).

Calix, Inc. is a telecommunications company that specializes in providing software platforms, systems, and services to support the delivery of broadband services. The company was founded in 1999 and is headquartered in San Jose, California.

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.

CALX vs MDU — Head-to-Head

Bigger by revenue
MDU
MDU
1.9× larger
MDU
$522.6M
$280.0M
CALX
Growing faster (revenue YoY)
CALX
CALX
+28.7% gap
CALX
27.1%
-1.6%
MDU
Higher net margin
MDU
MDU
10.6% more per $
MDU
14.6%
4.0%
CALX
More free cash flow
CALX
CALX
$342.5M more FCF
CALX
$6.5M
$-336.0M
MDU
Faster 2-yr revenue CAGR
CALX
CALX
Annualised
CALX
18.9%
-5.7%
MDU

Income Statement — Q1 FY2026 vs Q4 FY2025

Metric
CALX
CALX
MDU
MDU
Revenue
$280.0M
$522.6M
Net Profit
$11.2M
$76.3M
Gross Margin
56.9%
Operating Margin
20.5%
Net Margin
4.0%
14.6%
Revenue YoY
27.1%
-1.6%
Net Profit YoY
334.2%
38.4%
EPS (diluted)
$0.16
$0.37

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
CALX
CALX
MDU
MDU
Q1 26
$280.0M
Q4 25
$272.4M
$522.6M
Q3 25
$265.4M
$313.6M
Q2 25
$241.9M
$348.7M
Q1 25
$220.2M
$678.0M
Q4 24
$206.1M
$531.0M
Q3 24
$200.9M
$290.7M
Q2 24
$198.1M
$343.1M
Net Profit
CALX
CALX
MDU
MDU
Q1 26
$11.2M
Q4 25
$7.2M
$76.3M
Q3 25
$15.7M
$18.3M
Q2 25
$-199.0K
$13.8M
Q1 25
$-4.8M
$82.0M
Q4 24
$-17.9M
$55.2M
Q3 24
$-4.0M
$64.6M
Q2 24
$-8.0M
$60.4M
Gross Margin
CALX
CALX
MDU
MDU
Q1 26
56.9%
Q4 25
57.7%
Q3 25
57.3%
Q2 25
56.3%
Q1 25
55.7%
Q4 24
55.0%
Q3 24
54.8%
Q2 24
54.3%
Operating Margin
CALX
CALX
MDU
MDU
Q1 26
Q4 25
3.4%
20.5%
Q3 25
6.6%
12.7%
Q2 25
0.2%
8.7%
Q1 25
-2.8%
16.6%
Q4 24
-9.1%
17.8%
Q3 24
-5.4%
12.0%
Q2 24
-5.7%
11.5%
Net Margin
CALX
CALX
MDU
MDU
Q1 26
4.0%
Q4 25
2.6%
14.6%
Q3 25
5.9%
5.8%
Q2 25
-0.1%
4.0%
Q1 25
-2.2%
12.1%
Q4 24
-8.7%
10.4%
Q3 24
-2.0%
22.2%
Q2 24
-4.0%
17.6%
EPS (diluted)
CALX
CALX
MDU
MDU
Q1 26
$0.16
Q4 25
$0.11
$0.37
Q3 25
$0.22
$0.09
Q2 25
$0.00
$0.07
Q1 25
$-0.07
$0.40
Q4 24
$-0.27
$0.26
Q3 24
$-0.06
$0.32
Q2 24
$-0.12
$0.30

Balance Sheet & Financial Strength

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

Metric
CALX
CALX
MDU
MDU
Cash + ST InvestmentsLiquidity on hand
$54.6M
$28.2M
Total DebtLower is stronger
$2.7B
Stockholders' EquityBook value
$738.0M
$2.8B
Total Assets
$7.6B
Debt / EquityLower = less leverage
0.97×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CALX
CALX
MDU
MDU
Q1 26
$54.6M
Q4 25
$143.1M
$28.2M
Q3 25
$95.0M
$75.9M
Q2 25
$76.5M
$58.8M
Q1 25
$42.3M
$59.5M
Q4 24
$43.2M
$66.9M
Q3 24
$62.4M
$88.3M
Q2 24
$84.5M
$78.8M
Total Debt
CALX
CALX
MDU
MDU
Q1 26
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
Stockholders' Equity
CALX
CALX
MDU
MDU
Q1 26
$738.0M
Q4 25
$859.2M
$2.8B
Q3 25
$822.5M
$2.7B
Q2 25
$772.7M
$2.7B
Q1 25
$767.2M
$2.7B
Q4 24
$780.9M
$2.7B
Q3 24
$778.7M
$3.1B
Q2 24
$754.2M
$3.0B
Total Assets
CALX
CALX
MDU
MDU
Q1 26
Q4 25
$1.1B
$7.6B
Q3 25
$976.4M
$7.2B
Q2 25
$921.4M
$6.9B
Q1 25
$917.1M
$7.0B
Q4 24
$939.3M
$7.0B
Q3 24
$937.5M
$8.2B
Q2 24
$917.9M
$8.0B
Debt / Equity
CALX
CALX
MDU
MDU
Q1 26
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×

Cash Flow & Capital Efficiency

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

Metric
CALX
CALX
MDU
MDU
Operating Cash FlowLast quarter
$14.6M
$80.6M
Free Cash FlowOCF − Capex
$6.5M
$-336.0M
FCF MarginFCF / Revenue
2.3%
-64.3%
Capex IntensityCapex / Revenue
79.7%
Cash ConversionOCF / Net Profit
1.31×
1.06×
TTM Free Cash FlowTrailing 4 quarters
$109.1M
$-297.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CALX
CALX
MDU
MDU
Q1 26
$14.6M
Q4 25
$46.0M
$80.6M
Q3 25
$32.3M
$57.9M
Q2 25
$39.4M
$117.4M
Q1 25
$17.2M
$217.5M
Q4 24
$15.4M
$60.5M
Q3 24
$16.0M
$140.2M
Q2 24
$22.3M
$136.5M
Free Cash Flow
CALX
CALX
MDU
MDU
Q1 26
$6.5M
Q4 25
$40.3M
$-336.0M
Q3 25
$26.7M
$-121.9M
Q2 25
$35.6M
$36.5M
Q1 25
$12.9M
$124.4M
Q4 24
$10.2M
$-95.8M
Q3 24
$12.8M
$673.0K
Q2 24
$16.4M
$26.5M
FCF Margin
CALX
CALX
MDU
MDU
Q1 26
2.3%
Q4 25
14.8%
-64.3%
Q3 25
10.1%
-38.9%
Q2 25
14.7%
10.5%
Q1 25
5.9%
18.4%
Q4 24
5.0%
-18.0%
Q3 24
6.3%
0.2%
Q2 24
8.3%
7.7%
Capex Intensity
CALX
CALX
MDU
MDU
Q1 26
Q4 25
2.1%
79.7%
Q3 25
2.1%
57.3%
Q2 25
1.5%
23.2%
Q1 25
2.0%
13.7%
Q4 24
2.5%
29.4%
Q3 24
1.6%
48.0%
Q2 24
3.0%
32.0%
Cash Conversion
CALX
CALX
MDU
MDU
Q1 26
1.31×
Q4 25
6.38×
1.06×
Q3 25
2.06×
3.16×
Q2 25
8.52×
Q1 25
2.65×
Q4 24
1.10×
Q3 24
2.17×
Q2 24
2.26×

Financial Flow Comparison

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

Revenue Breakdown by Segment

CALX
CALX

Appliance$232.8M83%
Software and service$47.1M17%

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%

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