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

ACM Research, Inc. is the larger business by last-quarter revenue ($244.4M vs $219.1M, roughly 1.1× Iridium Communications Inc.). Iridium Communications Inc. runs the higher net margin — 9.9% vs 3.3%, a 6.6% gap on every dollar of revenue. On growth, ACM Research, Inc. posted the faster year-over-year revenue change (9.4% vs 1.9%). Over the past eight quarters, ACM Research, Inc.'s revenue compounded faster (26.7% CAGR vs 4.4%).

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.

Iridium Communications Inc. is a publicly traded American company headquartered in McLean, Virginia, United States. Iridium operates the Iridium satellite constellation, a system of 80 satellites: 66 are active satellites and the remaining fourteen function as in-orbit spares. Iridium Satellites are used for worldwide voice and data communication from handheld satellite phones, satellite messenger communication devices and integrated transceivers, as well as for two-way satellite messaging se...

ACMR vs IRDM — Head-to-Head

Bigger by revenue
ACMR
ACMR
1.1× larger
ACMR
$244.4M
$219.1M
IRDM
Growing faster (revenue YoY)
ACMR
ACMR
+7.4% gap
ACMR
9.4%
1.9%
IRDM
Higher net margin
IRDM
IRDM
6.6% more per $
IRDM
9.9%
3.3%
ACMR
Faster 2-yr revenue CAGR
ACMR
ACMR
Annualised
ACMR
26.7%
4.4%
IRDM

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
ACMR
ACMR
IRDM
IRDM
Revenue
$244.4M
$219.1M
Net Profit
$8.0M
$21.6M
Gross Margin
40.9%
Operating Margin
9.4%
23.2%
Net Margin
3.3%
9.9%
Revenue YoY
9.4%
1.9%
Net Profit YoY
-74.1%
EPS (diluted)
$0.11

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
IRDM
IRDM
Q1 26
$219.1M
Q4 25
$244.4M
$212.9M
Q3 25
$269.2M
$226.9M
Q2 25
$215.4M
$216.9M
Q1 25
$172.3M
$214.9M
Q4 24
$223.5M
$213.0M
Q3 24
$204.0M
$212.8M
Q2 24
$202.5M
$201.1M
Net Profit
ACMR
ACMR
IRDM
IRDM
Q1 26
$21.6M
Q4 25
$8.0M
$24.9M
Q3 25
$35.9M
$37.1M
Q2 25
$29.8M
$22.0M
Q1 25
$20.4M
$30.4M
Q4 24
$31.1M
$36.3M
Q3 24
$30.9M
$24.4M
Q2 24
$24.2M
$32.3M
Gross Margin
ACMR
ACMR
IRDM
IRDM
Q1 26
Q4 25
40.9%
Q3 25
42.0%
Q2 25
48.5%
Q1 25
47.9%
Q4 24
49.6%
Q3 24
51.4%
Q2 24
47.8%
Operating Margin
ACMR
ACMR
IRDM
IRDM
Q1 26
23.2%
Q4 25
9.4%
25.9%
Q3 25
10.7%
30.9%
Q2 25
14.7%
23.2%
Q1 25
15.0%
28.1%
Q4 24
19.7%
24.5%
Q3 24
21.7%
25.8%
Q2 24
18.6%
21.7%
Net Margin
ACMR
ACMR
IRDM
IRDM
Q1 26
9.9%
Q4 25
3.3%
11.7%
Q3 25
13.3%
16.4%
Q2 25
13.8%
10.1%
Q1 25
11.8%
14.2%
Q4 24
13.9%
17.1%
Q3 24
15.2%
11.5%
Q2 24
12.0%
16.1%
EPS (diluted)
ACMR
ACMR
IRDM
IRDM
Q1 26
Q4 25
$0.11
$0.24
Q3 25
$0.52
$0.35
Q2 25
$0.44
$0.20
Q1 25
$0.30
$0.27
Q4 24
$0.47
$0.30
Q3 24
$0.45
$0.21
Q2 24
$0.35
$0.27

Balance Sheet & Financial Strength

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

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

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ACMR
ACMR
IRDM
IRDM
Q1 26
Q4 25
$792.9M
$96.5M
Q3 25
$1.1B
$88.5M
Q2 25
$463.2M
$79.3M
Q1 25
$475.6M
$50.9M
Q4 24
$426.8M
$93.5M
Q3 24
$353.8M
$159.6M
Q2 24
$343.6M
$63.5M
Total Debt
ACMR
ACMR
IRDM
IRDM
Q1 26
Q4 25
$214.0M
$1.8B
Q3 25
$242.0M
Q2 25
$225.1M
Q1 25
$202.5M
Q4 24
$150.0M
$1.8B
Q3 24
$150.0M
Q2 24
$90.5M
Stockholders' Equity
ACMR
ACMR
IRDM
IRDM
Q1 26
Q4 25
$1.5B
$462.6M
Q3 25
$1.4B
$450.5M
Q2 25
$986.5M
$473.6M
Q1 25
$949.1M
$518.4M
Q4 24
$904.6M
$576.6M
Q3 24
$888.2M
$663.8M
Q2 24
$833.2M
$786.7M
Total Assets
ACMR
ACMR
IRDM
IRDM
Q1 26
Q4 25
$2.9B
$2.5B
Q3 25
$2.8B
$2.6B
Q2 25
$2.0B
$2.6B
Q1 25
$1.9B
$2.6B
Q4 24
$1.9B
$2.7B
Q3 24
$1.8B
$2.8B
Q2 24
$1.7B
$2.7B
Debt / Equity
ACMR
ACMR
IRDM
IRDM
Q1 26
Q4 25
0.15×
3.80×
Q3 25
0.17×
Q2 25
0.23×
Q1 25
0.21×
Q4 24
0.17×
3.05×
Q3 24
0.17×
Q2 24
0.11×

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
IRDM
IRDM
Operating Cash FlowLast quarter
$33.9M
Free Cash FlowOCF − Capex
$20.1M
FCF MarginFCF / Revenue
8.2%
Capex IntensityCapex / Revenue
5.6%
13.7%
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
IRDM
IRDM
Q1 26
Q4 25
$33.9M
$108.6M
Q3 25
$-4.6M
$100.8M
Q2 25
$-44.9M
$129.6M
Q1 25
$5.3M
$61.1M
Q4 24
$88.6M
$104.8M
Q3 24
$11.9M
$118.6M
Q2 24
$61.6M
$81.1M
Free Cash Flow
ACMR
ACMR
IRDM
IRDM
Q1 26
Q4 25
$20.1M
$75.1M
Q3 25
$-15.6M
$79.2M
Q2 25
$-59.6M
$108.9M
Q1 25
$-11.4M
$36.5M
Q4 24
$77.2M
$80.5M
Q3 24
$-20.6M
$100.0M
Q2 24
$48.5M
$68.7M
FCF Margin
ACMR
ACMR
IRDM
IRDM
Q1 26
Q4 25
8.2%
35.3%
Q3 25
-5.8%
34.9%
Q2 25
-27.7%
50.2%
Q1 25
-6.6%
17.0%
Q4 24
34.5%
37.8%
Q3 24
-10.1%
47.0%
Q2 24
24.0%
34.2%
Capex Intensity
ACMR
ACMR
IRDM
IRDM
Q1 26
13.7%
Q4 25
5.6%
15.7%
Q3 25
4.1%
9.5%
Q2 25
6.8%
9.5%
Q1 25
9.7%
11.4%
Q4 24
5.1%
11.4%
Q3 24
16.0%
8.7%
Q2 24
6.5%
6.2%
Cash Conversion
ACMR
ACMR
IRDM
IRDM
Q1 26
Q4 25
4.21×
4.37×
Q3 25
-0.13×
2.71×
Q2 25
-1.51×
5.90×
Q1 25
0.26×
2.01×
Q4 24
2.85×
2.88×
Q3 24
0.39×
4.85×
Q2 24
2.54×
2.51×

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%

IRDM
IRDM

Voice and data$57.4M26%
IoT data (2)$46.0M21%
Government$39.5M18%
Government service revenue (5)$27.6M13%
Subscriber equipment$20.2M9%
Hosted payload and other data service (4)$14.8M7%
Broadband (3)$12.2M6%
Commercial$1.3M1%

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