Crown Castle Inc. is a specialized real estate investment trust (REIT) and one of the largest providers of shared communications infrastructure in the United States. The company's core business model involves owning, operating, and leasing cell towers to major wireless carriers—including AT&T, Verizon, and T-Mobile—under long-term contracts that generate stable, recurring site rental revenues. Historically, Crown Castle's portfolio included approximately 40,000 macro cell towers alongside roughly 90,000 route miles of fiber supporting small cell networks. However, in May 2026, the company completed a strategic pivot to become a pure-play tower REIT by selling its fiber solutions and small cell businesses for $8.5 billion to Zayo Group Holdings and an EQT infrastructure fund. This divestiture allowed Crown Castle to refocus entirely on its highly profitable U.S. tower operations, reduce debt, and fund share repurchases. The company's revenue is primarily derived from site rental contracts, which benefit from the continuous growth in mobile data usage and the ongoing deployment and densification of 5G networks. Operating exclusively within the United States, Crown Castle maintains a strong competitive position as a critical enabler of wireless connectivity, providing the essential physical infrastructure that telecommunications providers require to deliver reliable network coverage.
