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Side-by-side financial comparison of ADTRAN Holdings, Inc. (ADTN) and Custom Truck One Source, Inc. (CTOS). Click either name above to swap in a different company.

Custom Truck One Source, Inc. is the larger business by last-quarter revenue ($422.2M vs $291.6M, roughly 1.4× ADTRAN Holdings, Inc.). ADTRAN Holdings, Inc. runs the higher net margin — -1.2% vs -4.2%, a 3.0% gap on every dollar of revenue. On growth, ADTRAN Holdings, Inc. posted the faster year-over-year revenue change (20.1% vs -8.5%). Over the past eight quarters, Custom Truck One Source, Inc.'s revenue compounded faster (14.8% CAGR vs 13.5%).

Adtran, Inc. is an American fiber networking and telecommunications company headquartered in Huntsville, Alabama. It is a vendor of both residential and enterprise networking equipment, along with administrative software for network management and deployment. Its customers include communications service providers, governments, enterprises and utilities.

Custom Truck One Source, Inc. is a leading provider of specialized heavy truck and equipment solutions in North America. It offers custom vehicle manufacturing, equipment sales and rentals, aftermarket parts, and maintenance services, serving core infrastructure, utility, construction, and energy industry segments.

ADTN vs CTOS — Head-to-Head

Bigger by revenue
CTOS
CTOS
1.4× larger
CTOS
$422.2M
$291.6M
ADTN
Growing faster (revenue YoY)
ADTN
ADTN
+28.6% gap
ADTN
20.1%
-8.5%
CTOS
Higher net margin
ADTN
ADTN
3.0% more per $
ADTN
-1.2%
-4.2%
CTOS
Faster 2-yr revenue CAGR
CTOS
CTOS
Annualised
CTOS
14.8%
13.5%
ADTN

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
ADTN
ADTN
CTOS
CTOS
Revenue
$291.6M
$422.2M
Net Profit
$-3.6M
$-17.8M
Gross Margin
39.0%
20.3%
Operating Margin
1.5%
2.9%
Net Margin
-1.2%
-4.2%
Revenue YoY
20.1%
-8.5%
Net Profit YoY
92.2%
-333.7%
EPS (diluted)
$-0.02
$-0.08

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
ADTN
ADTN
CTOS
CTOS
Q1 26
$422.2M
Q4 25
$291.6M
$387.3M
Q3 25
$279.4M
$359.9M
Q2 25
$265.1M
$392.2M
Q1 25
$247.7M
$307.1M
Q4 24
$242.9M
$398.3M
Q3 24
$227.7M
$337.5M
Q2 24
$226.0M
$320.6M
Net Profit
ADTN
ADTN
CTOS
CTOS
Q1 26
$-17.8M
Q4 25
$-3.6M
$20.9M
Q3 25
$-10.3M
$-5.8M
Q2 25
$-20.5M
$-28.4M
Q1 25
$-11.3M
$-17.8M
Q4 24
$-46.1M
$27.6M
Q3 24
$-33.3M
$-17.4M
Q2 24
$-49.7M
$-24.5M
Gross Margin
ADTN
ADTN
CTOS
CTOS
Q1 26
20.3%
Q4 25
39.0%
31.8%
Q3 25
38.3%
28.0%
Q2 25
37.3%
26.1%
Q1 25
38.4%
27.9%
Q4 24
36.9%
29.7%
Q3 24
36.5%
27.2%
Q2 24
36.0%
27.8%
Operating Margin
ADTN
ADTN
CTOS
CTOS
Q1 26
2.9%
Q4 25
1.5%
13.4%
Q3 25
-1.0%
9.1%
Q2 25
-5.0%
7.1%
Q1 25
-1.6%
4.0%
Q4 24
-6.9%
16.9%
Q3 24
-11.5%
6.8%
Q2 24
-17.0%
5.5%
Net Margin
ADTN
ADTN
CTOS
CTOS
Q1 26
-4.2%
Q4 25
-1.2%
5.4%
Q3 25
-3.7%
-1.6%
Q2 25
-7.7%
-7.2%
Q1 25
-4.5%
-5.8%
Q4 24
-19.0%
6.9%
Q3 24
-14.6%
-5.2%
Q2 24
-22.0%
-7.6%
EPS (diluted)
ADTN
ADTN
CTOS
CTOS
Q1 26
$-0.08
Q4 25
$-0.02
$0.10
Q3 25
$-0.12
$-0.03
Q2 25
$-0.24
$-0.13
Q1 25
$-0.14
$-0.08
Q4 24
$-0.58
$0.11
Q3 24
$-0.38
$-0.07
Q2 24
$-0.63
$-0.10

Balance Sheet & Financial Strength

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

Metric
ADTN
ADTN
CTOS
CTOS
Cash + ST InvestmentsLiquidity on hand
$95.7M
$6.3M
Total DebtLower is stronger
$25.9M
Stockholders' EquityBook value
$145.8M
$809.1M
Total Assets
$1.2B
$3.4B
Debt / EquityLower = less leverage
0.03×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ADTN
ADTN
CTOS
CTOS
Q1 26
$6.3M
Q4 25
$95.7M
$6.3M
Q3 25
$93.7M
$13.1M
Q2 25
$106.3M
$5.3M
Q1 25
$101.3M
$5.4M
Q4 24
$76.0M
$3.8M
Q3 24
$88.5M
$8.4M
Q2 24
$111.2M
$8.1M
Total Debt
ADTN
ADTN
CTOS
CTOS
Q1 26
$25.9M
Q4 25
$1.6B
Q3 25
$1.6B
Q2 25
$1.6B
Q1 25
$1.6B
Q4 24
$1.5B
Q3 24
$1.6B
Q2 24
$1.5B
Stockholders' Equity
ADTN
ADTN
CTOS
CTOS
Q1 26
$809.1M
Q4 25
$145.8M
$809.1M
Q3 25
$141.6M
$784.7M
Q2 25
$169.6M
$790.1M
Q1 25
$138.9M
$813.4M
Q4 24
$127.0M
$861.3M
Q3 24
$205.6M
$837.5M
Q2 24
$213.6M
$856.7M
Total Assets
ADTN
ADTN
CTOS
CTOS
Q1 26
$3.4B
Q4 25
$1.2B
$3.4B
Q3 25
$1.2B
$3.5B
Q2 25
$1.2B
$3.6B
Q1 25
$1.2B
$3.5B
Q4 24
$1.2B
$3.5B
Q3 24
$1.3B
$3.6B
Q2 24
$1.3B
$3.5B
Debt / Equity
ADTN
ADTN
CTOS
CTOS
Q1 26
0.03×
Q4 25
2.03×
Q3 25
2.10×
Q2 25
2.04×
Q1 25
1.97×
Q4 24
1.77×
Q3 24
1.87×
Q2 24
1.79×

Cash Flow & Capital Efficiency

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

Metric
ADTN
ADTN
CTOS
CTOS
Operating Cash FlowLast quarter
$42.2M
Free Cash FlowOCF − Capex
$30.6M
FCF MarginFCF / Revenue
10.5%
Capex IntensityCapex / Revenue
4.0%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$98.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ADTN
ADTN
CTOS
CTOS
Q1 26
Q4 25
$42.2M
$47.3M
Q3 25
$12.2M
$81.5M
Q2 25
$32.2M
$125.7M
Q1 25
$43.2M
$55.6M
Q4 24
$2.4M
$82.1M
Q3 24
$43.3M
$16.5M
Q2 24
$19.9M
$37.8M
Free Cash Flow
ADTN
ADTN
CTOS
CTOS
Q1 26
Q4 25
$30.6M
Q3 25
$4.2M
Q2 25
$27.5M
Q1 25
$35.8M
Q4 24
$-895.0K
Q3 24
$37.1M
Q2 24
$8.4M
FCF Margin
ADTN
ADTN
CTOS
CTOS
Q1 26
Q4 25
10.5%
Q3 25
1.5%
Q2 25
10.4%
Q1 25
14.4%
Q4 24
-0.4%
Q3 24
16.3%
Q2 24
3.7%
Capex Intensity
ADTN
ADTN
CTOS
CTOS
Q1 26
Q4 25
4.0%
Q3 25
2.9%
Q2 25
1.8%
Q1 25
3.0%
Q4 24
1.4%
Q3 24
2.7%
Q2 24
5.1%
Cash Conversion
ADTN
ADTN
CTOS
CTOS
Q1 26
Q4 25
2.27×
Q3 25
Q2 25
Q1 25
Q4 24
2.98×
Q3 24
Q2 24

Financial Flow Comparison

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

Revenue Breakdown by Segment

ADTN
ADTN

Subscriber Solutions$96.2M33%
Optical Networking Solutions$81.8M28%
Access Aggregation Solutions$64.6M22%
Services And Support$48.9M17%

CTOS
CTOS

Equipment sales$273.9M65%
Rental revenue$116.3M28%
Parts sales and services$32.1M8%

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