telecommunications infrastructure companies

Companies whose enriched business profile is tagged “telecommunications infrastructure”, drawn from their SEC filings + website text. Sorted by market capitalization; every figure is delayed data from SEC EDGAR + Finnhub, shown with its as-of date.

• MasTec (MTZ) Industrials — North American infrastructure engineering and construction leader delivering integrated solutions across communications, clean energy, power delivery, and pipeline infrastructure. ask →
• BEL FUSE INC CLASS B (BELFB) Information Technology — Bel Fuse is a global manufacturer of critical electronic components including power supplies, connectors, and magnetic modules used in demanding aerospace, defense, and industrial applications. ask →
• CENTURI HOLDINGS INC (CTRI) Industrials — Centuri is a large independent utility infrastructure services provider that constructs and maintains energy and communications networks for utilities across North America. ask →
• ROGERS CORP (ROG) Information Technology — Rogers Corporation is a global leader in engineered high-performance materials used in mission-critical applications for electric vehicles, energy, and advanced electronics. ask →
• CUSTOM TRUCK ONE SOURCE INC (CTOS) Industrials — Custom Truck One Source is a North American specialty equipment rental, sales, and services provider serving critical infrastructure industries with a national fleet of over 10,400 units and an integrated "one-stop-shop" model. ask →
• PREFORMED LINE PRODUCTS (PLPC) Industrials — Global manufacturer of specialized hardware, closures, and formed wire products that enable construction and maintenance of energy transmission, telecommunications, and renewable energy infrastructure networks. ask →
• IDT CORP CLASS B (IDT) Communication Services — IDT Corporation is a global provider of integrated communications and financial technology services, with a core focus on cross-border payments and digital telephony. ask →
• CLEARFIELD INC (CLFD) Information Technology — Clearfield provides modular fiber connectivity and management solutions designed to streamline the deployment of high-speed broadband infrastructure. ask →
• Optical Cable Corp (OCC) Information Technology — U.S. manufacturer of optical fiber and hybrid cables serving telecom, data center, military, and industrial markets with proprietary production technology. ask →
• RF INDUSTRIES LTD (RFIL) Information Technology — RF Industries designs and manufactures specialized interconnect products and cable assemblies primarily serving the telecommunications sector. ask →

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Data: SEC EDGAR (filings) + Finnhub (fundamentals, delayed daily-close). Figures shown with their as-of date.

Last updated 2026-07-22.

Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & Finnhub, shown with their as-of date.