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Side-by-side financial comparison of ACM Research, Inc. (ACMR) and Ribbon Communications Inc. (RBBN). Click either name above to swap in a different company.

ACM Research, Inc. is the larger business by last-quarter revenue ($244.4M vs $162.6M, roughly 1.5× Ribbon Communications Inc.). Ribbon Communications Inc. runs the higher net margin — 54.8% vs 3.3%, a 51.5% gap on every dollar of revenue. On growth, ACM Research, Inc. posted the faster year-over-year revenue change (9.4% vs -10.3%). Over the past eight quarters, ACM Research, Inc.'s revenue compounded faster (26.7% CAGR vs -8.1%).

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.

Ribbon Communications Inc. is a public company that makes software, IP and optical networking solutions for service providers, enterprises and critical infrastructure sectors. The company was formed in 2017, following the merger of Genband and Sonus Networks and is headquartered in Plano, Texas.

ACMR vs RBBN — Head-to-Head

Bigger by revenue
ACMR
ACMR
1.5× larger
ACMR
$244.4M
$162.6M
RBBN
Growing faster (revenue YoY)
ACMR
ACMR
+19.7% gap
ACMR
9.4%
-10.3%
RBBN
Higher net margin
RBBN
RBBN
51.5% more per $
RBBN
54.8%
3.3%
ACMR
Faster 2-yr revenue CAGR
ACMR
ACMR
Annualised
ACMR
26.7%
-8.1%
RBBN

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
ACMR
ACMR
RBBN
RBBN
Revenue
$244.4M
$162.6M
Net Profit
$8.0M
$89.1M
Gross Margin
40.9%
42.9%
Operating Margin
9.4%
37.6%
Net Margin
3.3%
54.8%
Revenue YoY
9.4%
-10.3%
Net Profit YoY
-74.1%
EPS (diluted)
$0.11
$0.50

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
RBBN
RBBN
Q1 26
$162.6M
Q4 25
$244.4M
$227.3M
Q3 25
$269.2M
$215.4M
Q2 25
$215.4M
$220.6M
Q1 25
$172.3M
$181.3M
Q4 24
$223.5M
$251.4M
Q3 24
$204.0M
$210.2M
Q2 24
$202.5M
$192.6M
Net Profit
ACMR
ACMR
RBBN
RBBN
Q1 26
$89.1M
Q4 25
$8.0M
Q3 25
$35.9M
$-12.1M
Q2 25
$29.8M
$-11.1M
Q1 25
$20.4M
$-26.2M
Q4 24
$31.1M
Q3 24
$30.9M
$-13.4M
Q2 24
$24.2M
$-16.8M
Gross Margin
ACMR
ACMR
RBBN
RBBN
Q1 26
42.9%
Q4 25
40.9%
53.3%
Q3 25
42.0%
50.1%
Q2 25
48.5%
49.6%
Q1 25
47.9%
45.4%
Q4 24
49.6%
55.7%
Q3 24
51.4%
52.1%
Q2 24
47.8%
50.8%
Operating Margin
ACMR
ACMR
RBBN
RBBN
Q1 26
37.6%
Q4 25
9.4%
4.1%
Q3 25
10.7%
1.3%
Q2 25
14.7%
1.9%
Q1 25
15.0%
-10.8%
Q4 24
19.7%
13.2%
Q3 24
21.7%
-0.4%
Q2 24
18.6%
-1.0%
Net Margin
ACMR
ACMR
RBBN
RBBN
Q1 26
54.8%
Q4 25
3.3%
Q3 25
13.3%
-5.6%
Q2 25
13.8%
-5.0%
Q1 25
11.8%
-14.5%
Q4 24
13.9%
Q3 24
15.2%
-6.4%
Q2 24
12.0%
-8.7%
EPS (diluted)
ACMR
ACMR
RBBN
RBBN
Q1 26
$0.50
Q4 25
$0.11
$0.50
Q3 25
$0.52
$-0.07
Q2 25
$0.44
$-0.06
Q1 25
$0.30
$-0.15
Q4 24
$0.47
$0.05
Q3 24
$0.45
$-0.08
Q2 24
$0.35
$-0.10

Balance Sheet & Financial Strength

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

Metric
ACMR
ACMR
RBBN
RBBN
Cash + ST InvestmentsLiquidity on hand
$792.9M
$67.6M
Total DebtLower is stronger
$214.0M
Stockholders' EquityBook value
$1.5B
$419.1M
Total Assets
$2.9B
Debt / EquityLower = less leverage
0.15×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ACMR
ACMR
RBBN
RBBN
Q1 26
$67.6M
Q4 25
$792.9M
$96.4M
Q3 25
$1.1B
$74.8M
Q2 25
$463.2M
$60.5M
Q1 25
$475.6M
$71.2M
Q4 24
$426.8M
$87.8M
Q3 24
$353.8M
$37.2M
Q2 24
$343.6M
$64.6M
Total Debt
ACMR
ACMR
RBBN
RBBN
Q1 26
Q4 25
$214.0M
$342.1M
Q3 25
$242.0M
$344.3M
Q2 25
$225.1M
$346.5M
Q1 25
$202.5M
$347.4M
Q4 24
$150.0M
$348.3M
Q3 24
$150.0M
$349.1M
Q2 24
$90.5M
$350.0M
Stockholders' Equity
ACMR
ACMR
RBBN
RBBN
Q1 26
$419.1M
Q4 25
$1.5B
$449.0M
Q3 25
$1.4B
$360.1M
Q2 25
$986.5M
$370.4M
Q1 25
$949.1M
$381.8M
Q4 24
$904.6M
$404.6M
Q3 24
$888.2M
$395.5M
Q2 24
$833.2M
$405.0M
Total Assets
ACMR
ACMR
RBBN
RBBN
Q1 26
Q4 25
$2.9B
$1.2B
Q3 25
$2.8B
$1.1B
Q2 25
$2.0B
$1.1B
Q1 25
$1.9B
$1.1B
Q4 24
$1.9B
$1.2B
Q3 24
$1.8B
$1.1B
Q2 24
$1.7B
$1.1B
Debt / Equity
ACMR
ACMR
RBBN
RBBN
Q1 26
Q4 25
0.15×
0.76×
Q3 25
0.17×
0.96×
Q2 25
0.23×
0.94×
Q1 25
0.21×
0.91×
Q4 24
0.17×
0.86×
Q3 24
0.17×
0.88×
Q2 24
0.11×
0.86×

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
RBBN
RBBN
Operating Cash FlowLast quarter
$33.9M
Free Cash FlowOCF − Capex
$20.1M
FCF MarginFCF / Revenue
8.2%
Capex IntensityCapex / Revenue
5.6%
Cash ConversionOCF / Net Profit
4.21×
TTM Free Cash FlowTrailing 4 quarters
$-66.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ACMR
ACMR
RBBN
RBBN
Q1 26
Q4 25
$33.9M
$29.2M
Q3 25
$-4.6M
$26.5M
Q2 25
$-44.9M
$-795.0K
Q1 25
$5.3M
$-3.5M
Q4 24
$88.6M
$61.8M
Q3 24
$11.9M
$-14.8M
Q2 24
$61.6M
$-9.8M
Free Cash Flow
ACMR
ACMR
RBBN
RBBN
Q1 26
Q4 25
$20.1M
$27.3M
Q3 25
$-15.6M
$21.0M
Q2 25
$-59.6M
$-6.5M
Q1 25
$-11.4M
$-15.7M
Q4 24
$77.2M
$53.8M
Q3 24
$-20.6M
$-23.7M
Q2 24
$48.5M
$-12.9M
FCF Margin
ACMR
ACMR
RBBN
RBBN
Q1 26
Q4 25
8.2%
12.0%
Q3 25
-5.8%
9.7%
Q2 25
-27.7%
-2.9%
Q1 25
-6.6%
-8.7%
Q4 24
34.5%
21.4%
Q3 24
-10.1%
-11.3%
Q2 24
24.0%
-6.7%
Capex Intensity
ACMR
ACMR
RBBN
RBBN
Q1 26
Q4 25
5.6%
0.9%
Q3 25
4.1%
2.6%
Q2 25
6.8%
2.6%
Q1 25
9.7%
6.7%
Q4 24
5.1%
3.2%
Q3 24
16.0%
4.2%
Q2 24
6.5%
1.6%
Cash Conversion
ACMR
ACMR
RBBN
RBBN
Q1 26
Q4 25
4.21×
Q3 25
-0.13×
Q2 25
-1.51×
Q1 25
0.26×
Q4 24
2.85×
Q3 24
0.39×
Q2 24
2.54×

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%

RBBN
RBBN

Service$94.5M58%
Product$68.1M42%

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