ADTRAN Holdings, Inc.
ADTRAN Holdings, Inc. (Nasdaq: ADTN) provides networking and communications platforms, software, systems and services for broadband access, metro optical transport and data center interconnection. Its customers include communications service providers, utilities, municipalities, fiber network builders, cable… From the company’s description.
Over the twelve months to Sep 30, 2026, ADTRAN Holdings, Inc. reported revenue of $1.14B, up 10.1% from a year earlier, and a net loss of $16.20M. Its operating margin was 0.0%, and operations generated $56.35M in cash. In fiscal 2025, it reported revenue of $1.08B, up 17.5% from fiscal 2024, and a net loss of $36.24M.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What ADTRAN Holdings, Inc. does
In the company’s own words
ADTRAN Holdings, Inc. (Nasdaq: ADTN) provides networking and communications platforms, software, systems and services for broadband access, metro optical transport and data center interconnection. Its customers include communications service providers, utilities, municipalities, fiber network builders, cable operators, businesses, government agencies, hyperscalers and data center companies. The company sells fiber and copper access platforms, optical transport and timing systems, customer-premises gateways and Wi-Fi equipment, network software, and network design, implementation and support services. It operates two reportable segments: Network Solutions, comprising hardware and software products, and Services & Support, covering network services, support and cloud-hosted software applications. Its products and services span subscriber, access and aggregation, and optical networking solutions, including the Mosaic One software platform and FSP 3000 optical transport products. ADTRAN owns ADTRAN, Inc. and holds a majority stake in Adtran Networks, combining the two businesses following its 2023 business combination with Adtran Networks. The company began operations in 1986 and reported research and development expenditures of $204.3 million in 2025. Its website is www.adtran.com.
Company details
- Sector
- Information Technology
- Industry (SIC)
- Electronic Equipment
- Headquarters
- HUNTSVILLE, AL
- Fiscal year end
- December
- CIK
- 926282
- SIC
- 3661
Financial performance, year by year
Fiscal 2011–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns ADTRAN Holdings, Inc. — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Superinvestors in ADTRAN Holdings, Inc. · what they did last quarter
Share of each manager’s reported 13F portfolio. Change is in shares held, since the previous quarter.
Largest fund holders · ADTRAN Holdings, Inc.’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.
Could not be determined for this company: bond issues.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
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