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Side-by-side financial comparison of ADTRAN Holdings, Inc. (ADTN) and Zeta Global Holdings Corp. (ZETA). Click either name above to swap in a different company.

Zeta Global Holdings Corp. is the larger business by last-quarter revenue ($394.6M vs $291.6M, roughly 1.4× ADTRAN Holdings, Inc.). Zeta Global Holdings Corp. runs the higher net margin — 1.7% vs -1.2%, a 2.9% gap on every dollar of revenue. On growth, Zeta Global Holdings Corp. posted the faster year-over-year revenue change (25.4% vs 20.1%). Zeta Global Holdings Corp. produced more free cash flow last quarter ($60.9M vs $30.6M). Over the past eight quarters, Zeta Global Holdings Corp.'s revenue compounded faster (42.3% 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.

Zeta Global Holdings Corp. is an American marketing technology company which was founded in 2007. Zeta offers companies a suite of multichannel marketing tools focused on creating, maintaining, and monetizing customer relationships. The company went public on the New York Stock Exchange on June 10, 2021, at a US$1.7 billion valuation.

ADTN vs ZETA — Head-to-Head

Bigger by revenue
ZETA
ZETA
1.4× larger
ZETA
$394.6M
$291.6M
ADTN
Growing faster (revenue YoY)
ZETA
ZETA
+5.4% gap
ZETA
25.4%
20.1%
ADTN
Higher net margin
ZETA
ZETA
2.9% more per $
ZETA
1.7%
-1.2%
ADTN
More free cash flow
ZETA
ZETA
$30.3M more FCF
ZETA
$60.9M
$30.6M
ADTN
Faster 2-yr revenue CAGR
ZETA
ZETA
Annualised
ZETA
42.3%
13.5%
ADTN

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ADTN
ADTN
ZETA
ZETA
Revenue
$291.6M
$394.6M
Net Profit
$-3.6M
$6.5M
Gross Margin
39.0%
59.5%
Operating Margin
1.5%
4.5%
Net Margin
-1.2%
1.7%
Revenue YoY
20.1%
25.4%
Net Profit YoY
92.2%
-57.1%
EPS (diluted)
$-0.02
$0.04

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
ZETA
ZETA
Q4 25
$291.6M
$394.6M
Q3 25
$279.4M
$337.2M
Q2 25
$265.1M
$308.4M
Q1 25
$247.7M
$264.4M
Q4 24
$242.9M
$314.7M
Q3 24
$227.7M
$268.3M
Q2 24
$226.0M
$227.8M
Q1 24
$226.2M
$194.9M
Net Profit
ADTN
ADTN
ZETA
ZETA
Q4 25
$-3.6M
$6.5M
Q3 25
$-10.3M
$-3.6M
Q2 25
$-20.5M
$-12.8M
Q1 25
$-11.3M
$-21.6M
Q4 24
$-46.1M
$15.2M
Q3 24
$-33.3M
$-17.4M
Q2 24
$-49.7M
$-28.1M
Q1 24
$-330.8M
$-39.6M
Gross Margin
ADTN
ADTN
ZETA
ZETA
Q4 25
39.0%
59.5%
Q3 25
38.3%
60.5%
Q2 25
37.3%
62.1%
Q1 25
38.4%
60.9%
Q4 24
36.9%
60.0%
Q3 24
36.5%
60.6%
Q2 24
36.0%
60.0%
Q1 24
31.1%
60.6%
Operating Margin
ADTN
ADTN
ZETA
ZETA
Q4 25
1.5%
4.5%
Q3 25
-1.0%
2.6%
Q2 25
-5.0%
-1.7%
Q1 25
-1.6%
-6.1%
Q4 24
-6.9%
2.2%
Q3 24
-11.5%
-4.6%
Q2 24
-17.0%
-11.7%
Q1 24
-153.1%
-18.4%
Net Margin
ADTN
ADTN
ZETA
ZETA
Q4 25
-1.2%
1.7%
Q3 25
-3.7%
-1.1%
Q2 25
-7.7%
-4.2%
Q1 25
-4.5%
-8.2%
Q4 24
-19.0%
4.8%
Q3 24
-14.6%
-6.5%
Q2 24
-22.0%
-12.3%
Q1 24
-146.2%
-20.3%
EPS (diluted)
ADTN
ADTN
ZETA
ZETA
Q4 25
$-0.02
$0.04
Q3 25
$-0.12
$-0.02
Q2 25
$-0.24
$-0.06
Q1 25
$-0.14
$-0.10
Q4 24
$-0.58
$0.10
Q3 24
$-0.38
$-0.09
Q2 24
$-0.63
$-0.16
Q1 24
$-4.20
$-0.23

Balance Sheet & Financial Strength

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

Metric
ADTN
ADTN
ZETA
ZETA
Cash + ST InvestmentsLiquidity on hand
$95.7M
$319.8M
Total DebtLower is stronger
$197.1M
Stockholders' EquityBook value
$145.8M
$804.6M
Total Assets
$1.2B
$1.5B
Debt / EquityLower = less leverage
0.24×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ADTN
ADTN
ZETA
ZETA
Q4 25
$95.7M
$319.8M
Q3 25
$93.7M
$385.2M
Q2 25
$106.3M
$365.3M
Q1 25
$101.3M
$364.4M
Q4 24
$76.0M
$366.2M
Q3 24
$88.5M
$418.5M
Q2 24
$111.2M
$154.7M
Q1 24
$106.8M
$141.6M
Total Debt
ADTN
ADTN
ZETA
ZETA
Q4 25
$197.1M
Q3 25
$196.9M
Q2 25
$196.7M
Q1 25
$196.5M
Q4 24
$196.3M
Q3 24
$196.1M
Q2 24
$184.4M
Q1 24
$184.2M
Stockholders' Equity
ADTN
ADTN
ZETA
ZETA
Q4 25
$145.8M
$804.6M
Q3 25
$141.6M
$689.2M
Q2 25
$169.6M
$673.3M
Q1 25
$138.9M
$676.6M
Q4 24
$127.0M
$676.8M
Q3 24
$205.6M
$474.9M
Q2 24
$213.6M
$217.0M
Q1 24
$260.8M
$191.6M
Total Assets
ADTN
ADTN
ZETA
ZETA
Q4 25
$1.2B
$1.5B
Q3 25
$1.2B
$1.2B
Q2 25
$1.2B
$1.1B
Q1 25
$1.2B
$1.1B
Q4 24
$1.2B
$1.1B
Q3 24
$1.3B
$869.1M
Q2 24
$1.3B
$583.9M
Q1 24
$1.3B
$550.3M
Debt / Equity
ADTN
ADTN
ZETA
ZETA
Q4 25
0.24×
Q3 25
0.29×
Q2 25
0.29×
Q1 25
0.29×
Q4 24
0.29×
Q3 24
0.41×
Q2 24
0.85×
Q1 24
0.96×

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
ZETA
ZETA
Operating Cash FlowLast quarter
$42.2M
$64.1M
Free Cash FlowOCF − Capex
$30.6M
$60.9M
FCF MarginFCF / Revenue
10.5%
15.4%
Capex IntensityCapex / Revenue
4.0%
0.8%
Cash ConversionOCF / Net Profit
9.81×
TTM Free Cash FlowTrailing 4 quarters
$98.0M
$185.1M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ADTN
ADTN
ZETA
ZETA
Q4 25
$42.2M
$64.1M
Q3 25
$12.2M
$57.9M
Q2 25
$32.2M
$42.0M
Q1 25
$43.2M
$34.8M
Q4 24
$2.4M
$43.7M
Q3 24
$43.3M
$34.4M
Q2 24
$19.9M
$31.1M
Q1 24
$37.9M
$24.7M
Free Cash Flow
ADTN
ADTN
ZETA
ZETA
Q4 25
$30.6M
$60.9M
Q3 25
$4.2M
$52.4M
Q2 25
$27.5M
$39.7M
Q1 25
$35.8M
$32.1M
Q4 24
$-895.0K
$35.4M
Q3 24
$37.1M
$29.5M
Q2 24
$8.4M
$24.4M
Q1 24
$24.4M
$18.9M
FCF Margin
ADTN
ADTN
ZETA
ZETA
Q4 25
10.5%
15.4%
Q3 25
1.5%
15.6%
Q2 25
10.4%
12.9%
Q1 25
14.4%
12.1%
Q4 24
-0.4%
11.3%
Q3 24
16.3%
11.0%
Q2 24
3.7%
10.7%
Q1 24
10.8%
9.7%
Capex Intensity
ADTN
ADTN
ZETA
ZETA
Q4 25
4.0%
0.8%
Q3 25
2.9%
1.6%
Q2 25
1.8%
0.8%
Q1 25
3.0%
1.0%
Q4 24
1.4%
2.6%
Q3 24
2.7%
1.8%
Q2 24
5.1%
3.0%
Q1 24
6.0%
3.0%
Cash Conversion
ADTN
ADTN
ZETA
ZETA
Q4 25
9.81×
Q3 25
Q2 25
Q1 25
Q4 24
2.87×
Q3 24
Q2 24
Q1 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%

ZETA
ZETA

Segment breakdown not available.

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