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Side-by-side financial comparison of Atmos Energy (ATO) and CONSTELLIUM SE (CSTM). Click either name above to swap in a different company.

CONSTELLIUM SE is the larger business by last-quarter revenue ($2.2B vs $1.3B, roughly 1.6× Atmos Energy). Atmos Energy runs the higher net margin — 30.0% vs 5.1%, a 24.9% gap on every dollar of revenue. CONSTELLIUM SE produced more free cash flow last quarter ($109.0M vs $-725.3M).

Atmos Energy Corporation, headquartered in Dallas, Texas, is one of the United States' largest natural-gas-only distributors, serving about three million natural gas distribution customers in over 1,400 communities in nine states from the Blue Ridge Mountains in the East to the Rocky Mountains in the West.

Constellium SE is an American-Swiss, French-based global manufacturer of aluminium rolled products, extruded products, and structural parts based on a large variety of advanced alloys. Constellium's C-TEC research center has been credited for advancing technology in the field of advanced aluminium alloy. Constellium primarily serves the aerospace, automotive, and packaging sectors. Large clients include Mercedes-Benz, Audi, BMW, Fiat Chrysler Automotive, Ford, Airbus, Boeing, and Bombardier.

ATO vs CSTM — Head-to-Head

Bigger by revenue
CSTM
CSTM
1.6× larger
CSTM
$2.2B
$1.3B
ATO
Higher net margin
ATO
ATO
24.9% more per $
ATO
30.0%
5.1%
CSTM
More free cash flow
CSTM
CSTM
$834.3M more FCF
CSTM
$109.0M
$-725.3M
ATO

Income Statement — Q1 FY2026 vs Q4 FY2025

Metric
ATO
ATO
CSTM
CSTM
Revenue
$1.3B
$2.2B
Net Profit
$403.0M
$112.0M
Gross Margin
Operating Margin
38.3%
7.5%
Net Margin
30.0%
5.1%
Revenue YoY
14.2%
Net Profit YoY
14.5%
EPS (diluted)
$2.44
$0.79

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
ATO
ATO
CSTM
CSTM
Q4 25
$1.3B
$2.2B
Q3 25
$737.5M
$2.2B
Q2 25
$838.8M
$2.1B
Q1 25
$2.0B
$2.0B
Q4 24
$1.2B
Q3 24
$657.9M
Q2 24
$701.5M
$1.9B
Q1 24
$1.6B
Net Profit
ATO
ATO
CSTM
CSTM
Q4 25
$403.0M
$112.0M
Q3 25
$174.9M
$88.0M
Q2 25
$186.4M
$36.0M
Q1 25
$485.6M
$37.0M
Q4 24
$351.9M
Q3 24
$134.0M
Q2 24
$165.6M
$76.0M
Q1 24
$432.0M
Gross Margin
ATO
ATO
CSTM
CSTM
Q4 25
Q3 25
Q2 25
Q1 25
60.0%
Q4 24
80.1%
Q3 24
Q2 24
Q1 24
62.1%
Operating Margin
ATO
ATO
CSTM
CSTM
Q4 25
38.3%
7.5%
Q3 25
29.8%
5.8%
Q2 25
30.1%
2.7%
Q1 25
32.2%
3.1%
Q4 24
39.1%
Q3 24
28.1%
Q2 24
31.4%
5.4%
Q1 24
33.4%
Net Margin
ATO
ATO
CSTM
CSTM
Q4 25
30.0%
5.1%
Q3 25
23.7%
4.1%
Q2 25
22.2%
1.7%
Q1 25
24.9%
1.9%
Q4 24
29.9%
Q3 24
20.4%
Q2 24
23.6%
3.9%
Q1 24
26.2%
EPS (diluted)
ATO
ATO
CSTM
CSTM
Q4 25
$2.44
$0.79
Q3 25
$1.04
$0.62
Q2 25
$1.16
$0.25
Q1 25
$3.03
$0.26
Q4 24
$2.23
Q3 24
$0.82
Q2 24
$1.08
$0.51
Q1 24
$2.85

Balance Sheet & Financial Strength

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

Metric
ATO
ATO
CSTM
CSTM
Cash + ST InvestmentsLiquidity on hand
$367.0M
$120.0M
Total DebtLower is stronger
$9.6B
$1.9B
Stockholders' EquityBook value
$14.3B
$952.0M
Total Assets
$29.8B
$5.4B
Debt / EquityLower = less leverage
0.67×
2.00×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ATO
ATO
CSTM
CSTM
Q4 25
$367.0M
$120.0M
Q3 25
$202.7M
$122.0M
Q2 25
$709.4M
$133.0M
Q1 25
$543.5M
$118.0M
Q4 24
$584.5M
Q3 24
$307.3M
Q2 24
$674.6M
Q1 24
$262.5M
Total Debt
ATO
ATO
CSTM
CSTM
Q4 25
$9.6B
$1.9B
Q3 25
$8.9B
$2.0B
Q2 25
$8.9B
$2.0B
Q1 25
$8.4B
$1.9B
Q4 24
$8.4B
Q3 24
$7.8B
Q2 24
$7.8B
Q1 24
$7.4B
Stockholders' Equity
ATO
ATO
CSTM
CSTM
Q4 25
$14.3B
$952.0M
Q3 25
$13.6B
$845.0M
Q2 25
$13.4B
$780.0M
Q1 25
$13.1B
$745.0M
Q4 24
$12.8B
Q3 24
$12.2B
Q2 24
$12.2B
$796.0M
Q1 24
$11.6B
Total Assets
ATO
ATO
CSTM
CSTM
Q4 25
$29.8B
$5.4B
Q3 25
$28.2B
$5.4B
Q2 25
$27.7B
$5.4B
Q1 25
$27.0B
$5.2B
Q4 24
$26.5B
Q3 24
$25.2B
Q2 24
$24.9B
Q1 24
$24.0B
Debt / Equity
ATO
ATO
CSTM
CSTM
Q4 25
0.67×
2.00×
Q3 25
0.66×
2.34×
Q2 25
0.67×
2.53×
Q1 25
0.64×
2.56×
Q4 24
0.66×
Q3 24
0.64×
Q2 24
0.64×
Q1 24
0.64×

Cash Flow & Capital Efficiency

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

Metric
ATO
ATO
CSTM
CSTM
Operating Cash FlowLast quarter
$308.1M
$218.0M
Free Cash FlowOCF − Capex
$-725.3M
$109.0M
FCF MarginFCF / Revenue
-54.0%
5.0%
Capex IntensityCapex / Revenue
77.0%
5.0%
Cash ConversionOCF / Net Profit
0.76×
1.95×
TTM Free Cash FlowTrailing 4 quarters
$-1.6B
$159.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ATO
ATO
CSTM
CSTM
Q4 25
$308.1M
$218.0M
Q3 25
$348.1M
$99.0M
Q2 25
$496.4M
$114.0M
Q1 25
$922.9M
$58.0M
Q4 24
$282.0M
Q3 24
$330.7M
Q2 24
$411.2M
$138.0M
Q1 24
$746.6M
Free Cash Flow
ATO
ATO
CSTM
CSTM
Q4 25
$-725.3M
$109.0M
Q3 25
$-615.5M
$24.0M
Q2 25
$-370.6M
$37.0M
Q1 25
$83.3M
$-11.0M
Q4 24
$-609.2M
Q3 24
$-477.3M
Q2 24
$-302.4M
$54.0M
Q1 24
$100.7M
FCF Margin
ATO
ATO
CSTM
CSTM
Q4 25
-54.0%
5.0%
Q3 25
-83.5%
1.1%
Q2 25
-44.2%
1.8%
Q1 25
4.3%
-0.6%
Q4 24
-51.8%
Q3 24
-72.5%
Q2 24
-43.1%
2.8%
Q1 24
6.1%
Capex Intensity
ATO
ATO
CSTM
CSTM
Q4 25
77.0%
5.0%
Q3 25
130.7%
3.5%
Q2 25
103.4%
3.7%
Q1 25
43.0%
3.5%
Q4 24
75.8%
Q3 24
122.8%
Q2 24
101.7%
4.3%
Q1 24
39.2%
Cash Conversion
ATO
ATO
CSTM
CSTM
Q4 25
0.76×
1.95×
Q3 25
1.99×
1.13×
Q2 25
2.66×
3.17×
Q1 25
1.90×
1.57×
Q4 24
0.80×
Q3 24
2.47×
Q2 24
2.48×
1.82×
Q1 24
1.73×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ATO
ATO

Distribution Segment$1.3B94%
Transportation Revenue$41.5M3%
Other$39.4M3%
Miscellaneous Revenue$2.8M0%

CSTM
CSTM

Packaging Rolled Products$1.0B46%
Automotive Rolled Products$318.0M14%
Aerospace Rolled Products$270.0M12%
Transportation Industry Defense And Other Rolled Products$232.0M11%
Automotive Extruded Products$220.0M10%
Other Extruded Products$132.0M6%
Specialty And Other Thin Rolled Products$22.0M1%

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