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Side-by-side financial comparison of ACM Research, Inc. (ACMR) and FOSTER L B CO (FSTR). Click either name above to swap in a different company.

ACM Research, Inc. is the larger business by last-quarter revenue ($244.4M vs $160.4M, roughly 1.5× FOSTER L B CO). ACM Research, Inc. runs the higher net margin — 3.3% vs 1.5%, a 1.8% gap on every dollar of revenue. On growth, FOSTER L B CO posted the faster year-over-year revenue change (25.1% vs 9.4%). ACM Research, Inc. produced more free cash flow last quarter ($20.1M vs $19.8M). Over the past eight quarters, ACM Research, Inc.'s revenue compounded faster (26.7% CAGR vs 13.6%).

ACM Research, Inc. is a leading global supplier of advanced processing equipment for the semiconductor manufacturing industry. It designs, develops and commercializes high-performance wet processing systems including wafer cleaning, electroplating and etching tools, which support production of advanced logic, memory and power semiconductor chips, serving chip manufacturers across Asia, North America and Europe.

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.

ACMR vs FSTR — Head-to-Head

Bigger by revenue
ACMR
ACMR
1.5× larger
ACMR
$244.4M
$160.4M
FSTR
Growing faster (revenue YoY)
FSTR
FSTR
+15.7% gap
FSTR
25.1%
9.4%
ACMR
Higher net margin
ACMR
ACMR
1.8% more per $
ACMR
3.3%
1.5%
FSTR
More free cash flow
ACMR
ACMR
$304.0K more FCF
ACMR
$20.1M
$19.8M
FSTR
Faster 2-yr revenue CAGR
ACMR
ACMR
Annualised
ACMR
26.7%
13.6%
FSTR

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ACMR
ACMR
FSTR
FSTR
Revenue
$244.4M
$160.4M
Net Profit
$8.0M
$2.4M
Gross Margin
40.9%
19.7%
Operating Margin
9.4%
4.9%
Net Margin
3.3%
1.5%
Revenue YoY
9.4%
25.1%
Net Profit YoY
-74.1%
1098.3%
EPS (diluted)
$0.11
$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
ACMR
ACMR
FSTR
FSTR
Q4 25
$244.4M
$160.4M
Q3 25
$269.2M
$138.3M
Q2 25
$215.4M
$143.6M
Q1 25
$172.3M
$97.8M
Q4 24
$223.5M
$128.2M
Q3 24
$204.0M
$137.5M
Q2 24
$202.5M
$140.8M
Q1 24
$152.2M
$124.3M
Net Profit
ACMR
ACMR
FSTR
FSTR
Q4 25
$8.0M
$2.4M
Q3 25
$35.9M
$4.4M
Q2 25
$29.8M
$2.9M
Q1 25
$20.4M
$-2.1M
Q4 24
$31.1M
$-242.0K
Q3 24
$30.9M
$35.9M
Q2 24
$24.2M
$2.8M
Q1 24
$17.4M
$4.4M
Gross Margin
ACMR
ACMR
FSTR
FSTR
Q4 25
40.9%
19.7%
Q3 25
42.0%
22.5%
Q2 25
48.5%
21.5%
Q1 25
47.9%
20.6%
Q4 24
49.6%
22.3%
Q3 24
51.4%
23.8%
Q2 24
47.8%
21.7%
Q1 24
52.0%
21.1%
Operating Margin
ACMR
ACMR
FSTR
FSTR
Q4 25
9.4%
4.9%
Q3 25
10.7%
6.0%
Q2 25
14.7%
5.3%
Q1 25
15.0%
-2.0%
Q4 24
19.7%
2.4%
Q3 24
21.7%
5.3%
Q2 24
18.6%
3.2%
Q1 24
16.6%
4.5%
Net Margin
ACMR
ACMR
FSTR
FSTR
Q4 25
3.3%
1.5%
Q3 25
13.3%
3.1%
Q2 25
13.8%
2.0%
Q1 25
11.8%
-2.2%
Q4 24
13.9%
-0.2%
Q3 24
15.2%
26.1%
Q2 24
12.0%
2.0%
Q1 24
11.5%
3.6%
EPS (diluted)
ACMR
ACMR
FSTR
FSTR
Q4 25
$0.11
$0.22
Q3 25
$0.52
$0.40
Q2 25
$0.44
$0.27
Q1 25
$0.30
$-0.20
Q4 24
$0.47
$-0.04
Q3 24
$0.45
$3.27
Q2 24
$0.35
$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
ACMR
ACMR
FSTR
FSTR
Cash + ST InvestmentsLiquidity on hand
$792.9M
$4.3M
Total DebtLower is stronger
$214.0M
$42.6M
Stockholders' EquityBook value
$1.5B
$175.3M
Total Assets
$2.9B
$330.4M
Debt / EquityLower = less leverage
0.15×
0.24×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ACMR
ACMR
FSTR
FSTR
Q4 25
$792.9M
$4.3M
Q3 25
$1.1B
$3.4M
Q2 25
$463.2M
$4.2M
Q1 25
$475.6M
$2.6M
Q4 24
$426.8M
$2.5M
Q3 24
$353.8M
$3.1M
Q2 24
$343.6M
$4.0M
Q1 24
$230.0M
$3.1M
Total Debt
ACMR
ACMR
FSTR
FSTR
Q4 25
$214.0M
$42.6M
Q3 25
$242.0M
$58.6M
Q2 25
$225.1M
$81.4M
Q1 25
$202.5M
$82.3M
Q4 24
$150.0M
$46.8M
Q3 24
$150.0M
$68.4M
Q2 24
$90.5M
$87.0M
Q1 24
$60.0M
$77.9M
Stockholders' Equity
ACMR
ACMR
FSTR
FSTR
Q4 25
$1.5B
$175.3M
Q3 25
$1.4B
$174.8M
Q2 25
$986.5M
$174.4M
Q1 25
$949.1M
$170.8M
Q4 24
$904.6M
$178.3M
Q3 24
$888.2M
$181.9M
Q2 24
$833.2M
$147.1M
Q1 24
$796.2M
$144.6M
Total Assets
ACMR
ACMR
FSTR
FSTR
Q4 25
$2.9B
$330.4M
Q3 25
$2.8B
$333.9M
Q2 25
$2.0B
$349.9M
Q1 25
$1.9B
$342.8M
Q4 24
$1.9B
$334.6M
Q3 24
$1.8B
$344.5M
Q2 24
$1.7B
$333.3M
Q1 24
$1.6B
$326.4M
Debt / Equity
ACMR
ACMR
FSTR
FSTR
Q4 25
0.15×
0.24×
Q3 25
0.17×
0.33×
Q2 25
0.23×
0.47×
Q1 25
0.21×
0.48×
Q4 24
0.17×
0.26×
Q3 24
0.17×
0.38×
Q2 24
0.11×
0.59×
Q1 24
0.08×
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
ACMR
ACMR
FSTR
FSTR
Operating Cash FlowLast quarter
$33.9M
$22.2M
Free Cash FlowOCF − Capex
$20.1M
$19.8M
FCF MarginFCF / Revenue
8.2%
12.3%
Capex IntensityCapex / Revenue
5.6%
1.5%
Cash ConversionOCF / Net Profit
4.21×
9.18×
TTM Free Cash FlowTrailing 4 quarters
$-66.6M
$25.2M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ACMR
ACMR
FSTR
FSTR
Q4 25
$33.9M
$22.2M
Q3 25
$-4.6M
$29.2M
Q2 25
$-44.9M
$10.4M
Q1 25
$5.3M
$-26.1M
Q4 24
$88.6M
$24.3M
Q3 24
$11.9M
$24.7M
Q2 24
$61.6M
$-5.0M
Q1 24
$-9.6M
$-21.4M
Free Cash Flow
ACMR
ACMR
FSTR
FSTR
Q4 25
$20.1M
$19.8M
Q3 25
$-15.6M
$26.4M
Q2 25
$-59.6M
$7.7M
Q1 25
$-11.4M
$-28.7M
Q4 24
$77.2M
$22.3M
Q3 24
$-20.6M
$21.7M
Q2 24
$48.5M
$-7.0M
Q1 24
$-35.1M
$-24.2M
FCF Margin
ACMR
ACMR
FSTR
FSTR
Q4 25
8.2%
12.3%
Q3 25
-5.8%
19.1%
Q2 25
-27.7%
5.4%
Q1 25
-6.6%
-29.4%
Q4 24
34.5%
17.4%
Q3 24
-10.1%
15.8%
Q2 24
24.0%
-5.0%
Q1 24
-23.0%
-19.4%
Capex Intensity
ACMR
ACMR
FSTR
FSTR
Q4 25
5.6%
1.5%
Q3 25
4.1%
2.0%
Q2 25
6.8%
1.9%
Q1 25
9.7%
2.6%
Q4 24
5.1%
1.5%
Q3 24
16.0%
2.2%
Q2 24
6.5%
1.5%
Q1 24
16.7%
2.2%
Cash Conversion
ACMR
ACMR
FSTR
FSTR
Q4 25
4.21×
9.18×
Q3 25
-0.13×
6.70×
Q2 25
-1.51×
3.61×
Q1 25
0.26×
Q4 24
2.85×
Q3 24
0.39×
0.69×
Q2 24
2.54×
-1.74×
Q1 24
-0.55×
-4.83×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ACMR
ACMR

Total Single Wafer And Semi Critical Cleaning Equipment$159.9M65%
ECP Front End And Packaging Furnace And Other Technologies$64.1M26%
Advanced Packaging Exclude ECP Services Spares$20.5M8%

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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