Amphenol Corp. said Monday it will acquire CommScope Holding’s connectivity and cable solutions business for about $10.5 billion in cash, including assumed debt. The transaction, the largest in Amphenol’s history, is expected to close in the first half of 2026 subject to regulatory clearance. The Connecticut-based maker of fiber-optic and electrical connectors said the purchase will broaden its broadband portfolio and strengthen its position in high-speed data-center, broadband and 5G infrastructure markets, where demand for fiber cabling continues to accelerate. CommScope, which reported about $9.4 billion of debt at the end of last year, plans to use the proceeds to reduce borrowings, redeem preferred shares and streamline operations around its remaining access-network solutions division. Investors welcomed the deal: CommScope shares jumped roughly 70% in pre-market trading, while Amphenol gained about 4%.