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Side-by-side financial comparison of AMERICAN SUPERCONDUCTOR CORP (AMSC) and NATURAL GAS SERVICES GROUP INC (NGS). Click either name above to swap in a different company.

AMERICAN SUPERCONDUCTOR CORP is the larger business by last-quarter revenue ($74.5M vs $46.1M, roughly 1.6× NATURAL GAS SERVICES GROUP INC). AMERICAN SUPERCONDUCTOR CORP runs the higher net margin — 158.1% vs 8.9%, a 149.2% gap on every dollar of revenue. On growth, AMERICAN SUPERCONDUCTOR CORP posted the faster year-over-year revenue change (21.4% vs 13.5%). AMERICAN SUPERCONDUCTOR CORP produced more free cash flow last quarter ($2.4M vs $-20.7M).

Anglo American plc is a British multinational mining company with headquarters in London, England. It is the world's largest producer of platinum, representing approximately 40 percent of global output, as well as being a major producer of diamonds, copper, nickel, iron ore, polyhalite and steelmaking coal. The company has operations in Africa, Asia, Australia, Europe, North America and South America.

Southern Company Gas, formerly AGL Resources, is an American Fortune 500 energy services holding company headquartered in Atlanta, Georgia. The company's operations consist of natural gas distribution, wholesale services, retail operations, and midstream operations. Southern Company Gas is one of the largest natural gas distribution companies in the United States. The company serves approximately 4.5 million utility customers through its regulated distribution subsidiaries across four states....

AMSC vs NGS — Head-to-Head

Bigger by revenue
AMSC
AMSC
1.6× larger
AMSC
$74.5M
$46.1M
NGS
Growing faster (revenue YoY)
AMSC
AMSC
+7.9% gap
AMSC
21.4%
13.5%
NGS
Higher net margin
AMSC
AMSC
149.2% more per $
AMSC
158.1%
8.9%
NGS
More free cash flow
AMSC
AMSC
$23.1M more FCF
AMSC
$2.4M
$-20.7M
NGS

Income Statement — Q3 FY2026 vs Q4 FY2025

Metric
AMSC
AMSC
NGS
NGS
Revenue
$74.5M
$46.1M
Net Profit
$117.8M
$4.1M
Gross Margin
30.7%
Operating Margin
4.5%
15.4%
Net Margin
158.1%
8.9%
Revenue YoY
21.4%
13.5%
Net Profit YoY
4679.1%
43.2%
EPS (diluted)
$2.62
$0.32

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
AMSC
AMSC
NGS
NGS
Q4 25
$74.5M
$46.1M
Q3 25
$65.9M
$43.4M
Q2 25
$72.4M
$41.4M
Q1 25
$66.7M
$41.4M
Q4 24
$61.4M
$40.7M
Q3 24
$54.5M
Q2 24
$40.3M
Q1 24
$42.0M
Net Profit
AMSC
AMSC
NGS
NGS
Q4 25
$117.8M
$4.1M
Q3 25
$4.8M
$5.8M
Q2 25
$6.7M
$5.2M
Q1 25
$1.2M
$4.9M
Q4 24
$2.5M
$2.9M
Q3 24
$4.9M
Q2 24
$-2.5M
Q1 24
$-1.6M
Gross Margin
AMSC
AMSC
NGS
NGS
Q4 25
30.7%
Q3 25
31.0%
Q2 25
33.8%
Q1 25
26.5%
Q4 24
26.6%
Q3 24
28.7%
Q2 24
30.3%
Q1 24
24.8%
Operating Margin
AMSC
AMSC
NGS
NGS
Q4 25
4.5%
15.4%
Q3 25
4.5%
24.8%
Q2 25
7.8%
24.0%
Q1 25
2.5%
23.0%
Q4 24
2.1%
14.9%
Q3 24
-1.4%
Q2 24
-8.2%
Q1 24
-5.3%
Net Margin
AMSC
AMSC
NGS
NGS
Q4 25
158.1%
8.9%
Q3 25
7.2%
13.3%
Q2 25
9.3%
12.5%
Q1 25
1.8%
11.7%
Q4 24
4.0%
7.0%
Q3 24
9.0%
Q2 24
-6.3%
Q1 24
-3.8%
EPS (diluted)
AMSC
AMSC
NGS
NGS
Q4 25
$2.62
$0.32
Q3 25
$0.11
$0.46
Q2 25
$0.17
$0.41
Q1 25
$0.04
$0.38
Q4 24
$0.06
$0.22
Q3 24
$0.13
Q2 24
$-0.07
Q1 24
$-0.03

Balance Sheet & Financial Strength

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

Metric
AMSC
AMSC
NGS
NGS
Cash + ST InvestmentsLiquidity on hand
$141.1M
Total DebtLower is stronger
Stockholders' EquityBook value
$536.8M
$274.7M
Total Assets
$719.5M
$586.8M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMSC
AMSC
NGS
NGS
Q4 25
$141.1M
Q3 25
$212.9M
Q2 25
$207.9M
$325.0K
Q1 25
$79.5M
$2.1M
Q4 24
$75.2M
$2.1M
Q3 24
$72.1M
Q2 24
$93.5M
Q1 24
$90.5M
Stockholders' Equity
AMSC
AMSC
NGS
NGS
Q4 25
$536.8M
$274.7M
Q3 25
$342.2M
$271.4M
Q2 25
$333.1M
$266.2M
Q1 25
$197.1M
$260.3M
Q4 24
$192.7M
$255.1M
Q3 24
$187.0M
Q2 24
$143.3M
Q1 24
$144.6M
Total Assets
AMSC
AMSC
NGS
NGS
Q4 25
$719.5M
$586.8M
Q3 25
$445.6M
$562.3M
Q2 25
$452.8M
$525.5M
Q1 25
$310.5M
$501.7M
Q4 24
$310.3M
$492.5M
Q3 24
$298.4M
Q2 24
$240.1M
Q1 24
$232.8M

Cash Flow & Capital Efficiency

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

Metric
AMSC
AMSC
NGS
NGS
Operating Cash FlowLast quarter
$3.2M
$13.9M
Free Cash FlowOCF − Capex
$2.4M
$-20.7M
FCF MarginFCF / Revenue
3.2%
-44.8%
Capex IntensityCapex / Revenue
1.2%
74.9%
Cash ConversionOCF / Net Profit
0.03×
3.38×
TTM Free Cash FlowTrailing 4 quarters
$16.0M
$-58.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMSC
AMSC
NGS
NGS
Q4 25
$3.2M
$13.9M
Q3 25
$6.5M
$16.8M
Q2 25
$4.1M
$11.0M
Q1 25
$6.3M
$21.3M
Q4 24
$5.9M
$9.4M
Q3 24
$12.7M
Q2 24
$3.4M
Q1 24
$2.2M
Free Cash Flow
AMSC
AMSC
NGS
NGS
Q4 25
$2.4M
$-20.7M
Q3 25
$5.1M
$-25.1M
Q2 25
$3.3M
$-14.8M
Q1 25
$5.3M
$2.0M
Q4 24
$5.3M
$-5.1M
Q3 24
$12.1M
Q2 24
$3.1M
Q1 24
$1.9M
FCF Margin
AMSC
AMSC
NGS
NGS
Q4 25
3.2%
-44.8%
Q3 25
7.7%
-57.7%
Q2 25
4.6%
-35.8%
Q1 25
7.9%
4.9%
Q4 24
8.7%
-12.6%
Q3 24
22.3%
Q2 24
7.8%
Q1 24
4.6%
Capex Intensity
AMSC
AMSC
NGS
NGS
Q4 25
1.2%
74.9%
Q3 25
2.1%
96.5%
Q2 25
1.1%
62.4%
Q1 25
1.6%
46.5%
Q4 24
0.9%
35.8%
Q3 24
1.1%
Q2 24
0.7%
Q1 24
0.7%
Cash Conversion
AMSC
AMSC
NGS
NGS
Q4 25
0.03×
3.38×
Q3 25
1.37×
2.90×
Q2 25
0.61×
2.12×
Q1 25
5.22×
4.38×
Q4 24
2.38×
3.29×
Q3 24
2.60×
Q2 24
Q1 24

Financial Flow Comparison

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

Revenue Breakdown by Segment

AMSC
AMSC

Equipment And Systems$56.0M75%
Megatran$14.1M19%
Comtrafo Industria De Transformadores Eletricos SA$4.6M6%

NGS
NGS

Segment breakdown not available.

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