Harmonic

What Harmonic does

Harmonic Inc. (NASDAQ: HLIT) is a San Jose, California-based public company founded in 1988 that has repositioned itself as a pure-play broadband infrastructure provider following the June 2026 divestiture of its Video Business to MediaKind for $145M. The company sells the cOS virtualized broadband platform (formerly CableOS), a cloud-native software stack running on Kubernetes and COTS hardware that delivers virtualized CMTS (vCMTS), virtual OLT (vOLT), and virtual BNG (vBNG) functions, supporting both DOCSIS (up to 4.0) and fiber (GPON, XGS-PON, ComboPON) networks from a single unified architecture. Around the core platform, Harmonic sells a portfolio of distributed edge devices (Oyster, Pebble, Pebble-2, Ripple DAA nodes; SeaStar optical node), centralized edge shelves (Reef, Wave), and FTTx transceivers/modules (Fin, Jetty, Pearl, Wharf, Pier), augmented by cOS Central Management and the Beacon Intelligent Speed Maximizer application.

The company serves cable MSOs, telcos, and broadband service providers globally through enterprise field sales, with cited reference deployments at Comcast, Charter, Mediacom, Vodafone, izzi, DNA Finland, and 150+ other operators powering roughly 46 million CPE devices across North America, Europe, Latin America, and Asia. Revenue is generated through a mix of platform software subscriptions and licenses, hardware sales of edge devices, professional services for deployment and integration, and recurring managed services including cOS Central Management. Harmonic is the Dell'Oro Group-recognized market share leader in vCMTS, DAA, and cable broadband equipment, holds a 2023 Technology & Engineering Emmy Award for vCMTS innovation, and has secured an $87% YoY increase in record backlog ($582.1M as of Q1 2026) and 43% YoY Broadband segment revenue growth, supporting a raised FY2026 Broadband revenue guidance of $475-495M.

Name

Harmonic

Legal name

Harmonic Inc.

Website

https://harmonicinc.com

Company type

Public

Founded year

1988

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Harmonic (NASDAQ: HLIT) provides the cOS virtualized broadband platform (vCMTS/vOLT/vBNG) plus edge hardware to cable MSOs and telcos globally, supporting DOCSIS and fiber networks on a single unified architecture.

Ownership category

akta.pro rank

Product category

Broadband Network Infrastructure

NAICS

Computer Systems Design and Related Services (54151), Wired Telecommunications Carriers (517111)

SIC

Computer Communications Equipment (3576), Communications Equipment, Nec (3669)

akta.pro primary industry

Cable Modems & eMTA (DOCSIS) (HDAFAIAC)

akta.pro secondary industries

Multi-Dwelling Unit (MDU) / In-Building Fiber Operators (HDAIACAH), Residential Broadband CPE (DSL/Cable/Fiber Gateways) (HDAFAIAA), Server Operating Systems & Hypervisors (Virtualization) (HDABADAE)

Keywords

• Virtualized broadband platform
• Cable broadband infrastructure
• Distributed access architecture
• DOCSIS network equipment
• Fiber broadband solutions

Headquarters

HQ city

San Jose

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Supply Chain, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Broadband Platform Software and Licenses: Software licensing and platform fees from the cOS virtualized broadband platform deployed by cable operators and broadband service providers. Revenue recognized from software subscriptions, perpetual licenses and usage-based models.
2. Hardware Sales: Sale of physical network edge devices including DAA nodes (Oyster, Pebble, Ripple), optical nodes (SeaStar), R-OLT modules (Pearl), OLT shelves (Pier, Wharf), and FTTx transceivers (Fin, Jetty). Hardware revenue from selling equipment to operators deploying Harmonic's platform.
3. Professional Services: Implementation, deployment, integration and support services provided to operators during network deployments and ongoing operations.
4. Managed Services: Ongoing managed services including cOS Central Management, monitoring, and network intelligence services.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Harmonic provides a cloud-native virtualized broadband platform (cOS, formerly CableOS) that delivers vCMTS, vOLT and vBNG capabilities on common off-the-shelf hardware, supporting both DOCSIS (up to 4.0) and fiber (GPON, XGS-PON, ComboPON) networks from a single unified platform. The platform is complemented by distributed access architecture edge devices, optical nodes, R-OLT modules, OLT shelves and FTTx transceivers, and is sold to cable MSOs, telcos and broadband service providers globally.

Product overview

Harmonic is a pure-play broadband company offering a unified platform-plus-modules architecture centered on its cOS (formerly CableOS) virtualized broadband platform. The core cOS platform provides virtualized cable modem termination system (vCMTS), virtual OLT (vOLT) and virtual BNG capabilities, powering nearly 46 million CPE devices globally. The platform is complemented by network edge hardware devices including distributed access architecture (DAA) nodes (Oyster, Pebble, Pebble-2, Ripple), optical nodes (SeaStar), DAA shelves (Reef, Wave), and FTTx transceivers (Fin, Jetty, Pearl, Wharf/Pier). Management and intelligence are provided through cOS Central Management and the Beacon Intelligent Speed Maximizer. For video operations, Harmonic offers the XOS Advanced Media Processor and VOS360 Media SaaS platform for streaming, playout and content delivery. The product portfolio supports both DOCSIS (up to 4.0) and fiber (GPON, XGS-PON, ComboPON) network architectures with AI-powered network intelligence and operations capabilities.

Differentiator

Problem solved

Functional benefit

Brands

• cOS: Virtualized broadband platform (formerly CableOS) powering next-gen broadband services for cable and fiber operators
• VOS
• XOS
• CableOS

Products and services

• cOS Broadband Platform Virtualized broadband access platform (vCMTS/vOLT) that enables cable operators to deliver multi-gigabit broadband services over both DOCSIS and fiber networks; powers nearly 46 million CPE devices worldwide.
• cOS Central Management Cloud-based network management application providing real-time telemetry, AI-driven insights and proactive network management for cOS-powered networks.
• Beacon Intelligent Speed Maximizer

Quantifiable outcome

• 20:1 rack reduction ratio achieved by operators deploying vCMTS compared to legacy iCMTS infrastructure
• +5 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

AI capability17 records

Feature8 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• ATX NetworkscoreTechnology or IntegrationPartnership integrating ATX's GigaXtend GMC Series 1.8GHz Amplifiers with Harmonic's cOS Virtualized Broadband Platform. Enables cable operators to remotely monitor, configure and diagnose amplifiers through unified management system, reducing operational complexity and minimizing truck rolls while supporting DOCSIS 4.0 adoption.
• ACI CommunicationscoreTechnology or IntegrationIntegration of ACI's advanced broadband amplifier portfolio with Harmonic's cOS Virtualized Broadband Platform. Extends cloud intelligence to the network edge, providing real-time visibility, control and automation across access networks for DOCSIS 4.0 transitions.
• Red HatcoreTechnology or IntegrationPartnership for cloud-native deployment of Harmonic's VOS Media Software on Red Hat OpenShift. Enables hybrid streaming architecture with containerized microservices for service providers.
• NVIDIAcoreTechnology or IntegrationNVIDIA GPU acceleration powering Harmonic's AI orchestration service and HD-to-UHD upscaling capabilities for video workflows and streaming services.
• SercommcoreStrategic or Co-development PartnerExclusive technology collaboration to advance DOCSIS 4.0 unified technology between Sercomm and Harmonic for the cable broadband industry.
• IMC TechnologiesminorImplementation/ SI/ Consulting PartnerSwiss systems integrator facilitating deployment of Harmonic's XOS Advanced Media Processor for Canal Alpha's playout operations across French-speaking Switzerland.
• Google CloudcoreTechnology or IntegrationIntegration of Google Cloud Marketplace in Harmonic's CableOS Cloud-Native Core Platform, unlocking new revenue opportunities for operators through cloud-based deployment options.

Scale indicators9 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• Cisco: Cisco is a broader networking incumbent with cable modem, DOCSIS, and carrier-grade routing portfolios that overlap with Harmonic's broadband platform. Its cable business is part of a much larger networking franchise, giving it scale advantages but less focus on the virtualized CMTS niche where Harmonic leads.
• Nokia: Nokia acquired Gainspeed and built out a cable broadband and mobile anyhaul portfolio that competes with Harmonic for cable MSO and telco fiber business. As a broad telecom incumbent with deep R&D and global carrier relationships, Nokia competes against Harmonic's fiber and virtualized broadband solutions.

Direct peers

• ADTRAN: ADTRAN is a direct competitor in fiber broadband access, GPON/XGS-PON, and broadband customer premises equipment for tier-2/3 operators and telcos. Post-merger with ADTRAN, the combined entity competes for the same fiber deployment wins as Harmonic's cOS fiber solutions.
• Teleste: Teleste is a direct competitor in cable access network equipment, including DAA nodes, amplifiers, and optical solutions for European cable operators. It competes with Harmonic's Pebble, Oyster, and SeaStar product families for similar DOCSIS 4.0 and fiber upgrade contracts.
• Vecima Networks: Vecima is a direct competitor in DOCSIS, DAA, and vCMTS technologies, supplying cable operators with remote PHY devices and Distributed Access Architecture products. It is similar in scale and product focus to Harmonic's broadband business, competing for the same operator upgrade budgets.
• ATX Networks: ATX Networks is a direct competitor in cable outside plant equipment, amplifiers, and optical nodes. Harmonic has even partnered with ATX (GigaXtend GMC amplifiers integration with cOS), indicating both competition and ecosystem collaboration at the network edge.
• Calix: Calix is a direct competitor in the fiber broadband access space, serving regional and tier-2/3 broadband service providers with ONT, OLT, and cloud-managed platforms. Its Smart Home and EXOS platforms target the same broadband operator customers as Harmonic's cOS and Pearl R-OLT products.
• CommScope: CommScope is a direct competitor in cable broadband access equipment (CMTS, DAA, optical nodes, amplifiers). It competes head-to-head with Harmonic for tier-1 cable MSO business and has a broader portfolio of legacy cable access hardware, but has been slower to virtualize the CMTS layer where Harmonic leads.

Emerging players

• Hitron Technologies: Hitron is an emerging player in DOCSIS cable modems, gateways, and CPE, supplying broadband operators globally. It is downstream of Harmonic's vCMTS platform but competes for similar operator mindshare on the customer premises equipment side.
• MaxLinear: MaxLinear is a semiconductor supplier of DOCSIS chipset and broadband modem SoCs used by cable operators. While not a direct platform competitor, it provides enabling silicon for cable modems and CPE that interact with Harmonic's vCMTS, making it both a partner and an adjacent player in the cable broadband ecosystem.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/HarmonicInc
• Facebookfacebook.com/146608178706562
• LinkedInlinkedin.com/company/harmonic

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds1 record

Investors5 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A7 records

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Harmonic