Calix, Inc. CALX

What this company does

Calix develops, markets and sells platform, cloud and managed services, powered by agentic AI, for communication service providers (CSPs) of all types and sizes. It has approximately 1,600 active service provider customers, purchasing directly and through partners, deploying passive optical, Active Ethernet or point-to-point Ethernet access networks or subscriber premise appliances. Sales to customers outside the U.S. represented 7% of its revenue in 2025, 8% in 2024 and 9% in 2023. As of December 31, 2025, it employed 1,921 employees globally, with 1,046 located in the U.S. and 875 outside the U.S., primarily in Canada, China and India. Its Calix One Platform includes Calix Cloud, offered in three role-based SaaS applications: Calix Engagement Cloud, Calix Operations Cloud and Calix Service Cloud. Calix Access Edge is its access network and subscriber service management solution for automated, intelligent next generation networks. Its Calix SmartLife managed service offerings include SmartHome managed services and applications to enhance, operate and secure the connected experience of subscribers in their home, including managed Wi-Fi, advanced content control, network security, connected cameras and social media monitoring for kids. Calix was founded in 1999.

Written from the business description in CALIX, INC's annual report to the U.S. Securities and Exchange Commission, filed 20 February 2026. Every sentence was checked against that document before publication.