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Side-by-side financial comparison of Atlas Energy Solutions Inc. (AESI) and FOSTER L B CO (FSTR). Click either name above to swap in a different company.

Atlas Energy Solutions Inc. is the larger business by last-quarter revenue ($249.4M vs $160.4M, roughly 1.6× FOSTER L B CO). FOSTER L B CO runs the higher net margin — 1.5% vs -8.9%, a 10.4% gap on every dollar of revenue. On growth, FOSTER L B CO posted the faster year-over-year revenue change (25.1% vs -8.1%). FOSTER L B CO produced more free cash flow last quarter ($19.8M vs $-18.1M). Over the past eight quarters, Atlas Energy Solutions Inc.'s revenue compounded faster (13.8% CAGR vs 13.6%).

Atlas Copco Group is a Swedish multinational industrial company. It manufactures compressors, vacuum equipment, pumps, generators, assembly tools, quality assurance equipment and other products and systems for industrial applications and mobile power generation. The products are sold in around 180 countries.

Foster L B Co. is a U.S.-headquartered industrial manufacturing firm that develops, produces and distributes engineered access solutions, construction components, and rail infrastructure products. It serves commercial construction, transportation, and industrial end markets across North America and selected international regions.

AESI vs FSTR — Head-to-Head

Bigger by revenue
AESI
AESI
1.6× larger
AESI
$249.4M
$160.4M
FSTR
Growing faster (revenue YoY)
FSTR
FSTR
+33.2% gap
FSTR
25.1%
-8.1%
AESI
Higher net margin
FSTR
FSTR
10.4% more per $
FSTR
1.5%
-8.9%
AESI
More free cash flow
FSTR
FSTR
$37.9M more FCF
FSTR
$19.8M
$-18.1M
AESI
Faster 2-yr revenue CAGR
AESI
AESI
Annualised
AESI
13.8%
13.6%
FSTR

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
AESI
AESI
FSTR
FSTR
Revenue
$249.4M
$160.4M
Net Profit
$-22.2M
$2.4M
Gross Margin
8.1%
19.7%
Operating Margin
-6.0%
4.9%
Net Margin
-8.9%
1.5%
Revenue YoY
-8.1%
25.1%
Net Profit YoY
-254.5%
1098.3%
EPS (diluted)
$-0.19
$0.22

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
AESI
AESI
FSTR
FSTR
Q4 25
$249.4M
$160.4M
Q3 25
$259.6M
$138.3M
Q2 25
$288.7M
$143.6M
Q1 25
$297.6M
$97.8M
Q4 24
$271.3M
$128.2M
Q3 24
$304.4M
$137.5M
Q2 24
$287.5M
$140.8M
Q1 24
$192.7M
$124.3M
Net Profit
AESI
AESI
FSTR
FSTR
Q4 25
$-22.2M
$2.4M
Q3 25
$-23.7M
$4.4M
Q2 25
$-5.6M
$2.9M
Q1 25
$1.2M
$-2.1M
Q4 24
$14.4M
$-242.0K
Q3 24
$3.9M
$35.9M
Q2 24
$14.8M
$2.8M
Q1 24
$26.8M
$4.4M
Gross Margin
AESI
AESI
FSTR
FSTR
Q4 25
8.1%
19.7%
Q3 25
9.2%
22.5%
Q2 25
18.1%
21.5%
Q1 25
18.3%
20.6%
Q4 24
18.4%
22.3%
Q3 24
17.4%
23.8%
Q2 24
21.0%
21.7%
Q1 24
35.7%
21.1%
Operating Margin
AESI
AESI
FSTR
FSTR
Q4 25
-6.0%
4.9%
Q3 25
-7.1%
6.0%
Q2 25
2.5%
5.3%
Q1 25
5.2%
-2.0%
Q4 24
11.3%
2.4%
Q3 24
5.0%
5.3%
Q2 24
9.8%
3.2%
Q1 24
20.6%
4.5%
Net Margin
AESI
AESI
FSTR
FSTR
Q4 25
-8.9%
1.5%
Q3 25
-9.1%
3.1%
Q2 25
-1.9%
2.0%
Q1 25
0.4%
-2.2%
Q4 24
5.3%
-0.2%
Q3 24
1.3%
26.1%
Q2 24
5.2%
2.0%
Q1 24
13.9%
3.6%
EPS (diluted)
AESI
AESI
FSTR
FSTR
Q4 25
$-0.19
$0.22
Q3 25
$-0.19
$0.40
Q2 25
$-0.04
$0.27
Q1 25
$0.01
$-0.20
Q4 24
$0.12
$-0.04
Q3 24
$0.04
$3.27
Q2 24
$0.13
$0.26
Q1 24
$0.26
$0.40

Balance Sheet & Financial Strength

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

Metric
AESI
AESI
FSTR
FSTR
Cash + ST InvestmentsLiquidity on hand
$4.3M
Total DebtLower is stronger
$604.2M
$42.6M
Stockholders' EquityBook value
$1.2B
$175.3M
Total Assets
$2.2B
$330.4M
Debt / EquityLower = less leverage
0.50×
0.24×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AESI
AESI
FSTR
FSTR
Q4 25
$4.3M
Q3 25
$3.4M
Q2 25
$4.2M
Q1 25
$2.6M
Q4 24
$2.5M
Q3 24
$3.1M
Q2 24
$4.0M
Q1 24
$3.1M
Total Debt
AESI
AESI
FSTR
FSTR
Q4 25
$604.2M
$42.6M
Q3 25
$529.1M
$58.6M
Q2 25
$533.8M
$81.4M
Q1 25
$538.5M
$82.3M
Q4 24
$0
$46.8M
Q3 24
$180.0M
$68.4M
Q2 24
$180.0M
$87.0M
Q1 24
$180.0M
$77.9M
Stockholders' Equity
AESI
AESI
FSTR
FSTR
Q4 25
$1.2B
$175.3M
Q3 25
$1.2B
$174.8M
Q2 25
$1.3B
$174.4M
Q1 25
$1.3B
$170.8M
Q4 24
$1.0B
$178.3M
Q3 24
$1.0B
$181.9M
Q2 24
$1.1B
$147.1M
Q1 24
$1.1B
$144.6M
Total Assets
AESI
AESI
FSTR
FSTR
Q4 25
$2.2B
$330.4M
Q3 25
$2.2B
$333.9M
Q2 25
$2.2B
$349.9M
Q1 25
$2.3B
$342.8M
Q4 24
$2.0B
$334.6M
Q3 24
$2.0B
$344.5M
Q2 24
$2.0B
$333.3M
Q1 24
$1.9B
$326.4M
Debt / Equity
AESI
AESI
FSTR
FSTR
Q4 25
0.50×
0.24×
Q3 25
0.43×
0.33×
Q2 25
0.42×
0.47×
Q1 25
0.41×
0.48×
Q4 24
0.00×
0.26×
Q3 24
0.17×
0.38×
Q2 24
0.17×
0.59×
Q1 24
0.17×
0.54×

Cash Flow & Capital Efficiency

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

Metric
AESI
AESI
FSTR
FSTR
Operating Cash FlowLast quarter
$3.7M
$22.2M
Free Cash FlowOCF − Capex
$-18.1M
$19.8M
FCF MarginFCF / Revenue
-7.3%
12.3%
Capex IntensityCapex / Revenue
8.7%
1.5%
Cash ConversionOCF / Net Profit
9.18×
TTM Free Cash FlowTrailing 4 quarters
$-30.9M
$25.2M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AESI
AESI
FSTR
FSTR
Q4 25
$3.7M
$22.2M
Q3 25
$32.4M
$29.2M
Q2 25
$88.6M
$10.4M
Q1 25
$-7.5M
$-26.1M
Q4 24
$70.9M
$24.3M
Q3 24
$85.2M
$24.7M
Q2 24
$60.9M
$-5.0M
Q1 24
$39.6M
$-21.4M
Free Cash Flow
AESI
AESI
FSTR
FSTR
Q4 25
$-18.1M
$19.8M
Q3 25
$-1.4M
$26.4M
Q2 25
$48.4M
$7.7M
Q1 25
$-59.8M
$-28.7M
Q4 24
$-5.6M
$22.3M
Q3 24
$-1.1M
$21.7M
Q2 24
$-54.9M
$-7.0M
Q1 24
$-55.9M
$-24.2M
FCF Margin
AESI
AESI
FSTR
FSTR
Q4 25
-7.3%
12.3%
Q3 25
-0.5%
19.1%
Q2 25
16.8%
5.4%
Q1 25
-20.1%
-29.4%
Q4 24
-2.1%
17.4%
Q3 24
-0.4%
15.8%
Q2 24
-19.1%
-5.0%
Q1 24
-29.0%
-19.4%
Capex Intensity
AESI
AESI
FSTR
FSTR
Q4 25
8.7%
1.5%
Q3 25
13.0%
2.0%
Q2 25
13.9%
1.9%
Q1 25
17.6%
2.6%
Q4 24
28.2%
1.5%
Q3 24
28.3%
2.2%
Q2 24
40.3%
1.5%
Q1 24
49.6%
2.2%
Cash Conversion
AESI
AESI
FSTR
FSTR
Q4 25
9.18×
Q3 25
6.70×
Q2 25
3.61×
Q1 25
-6.11×
Q4 24
4.92×
Q3 24
21.74×
0.69×
Q2 24
4.10×
-1.74×
Q1 24
1.48×
-4.83×

Financial Flow Comparison

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

Revenue Breakdown by Segment

AESI
AESI

Services$126.2M51%
Products$105.2M42%
Moser Acquisition$18.1M7%

FSTR
FSTR

Rail Technologies And Services Segment$98.0M61%
Over Time Output Method$26.3M16%
Services$19.4M12%
Rail Technologies Products$10.0M6%
Over Time Input Method$8.3M5%

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