Vertiv vs. Amphenol: Which AI Infrastructure Stock Has an Edge?

Vertiv and Amphenol both sit in the AI infrastructure supply chain, but they earn their money differently. Vertiv supplies critical power and cooling systems used in hyperscale and enterprise data centers, while Amphenol provides the high-performance connectors and interconnect systems that keep those facilities running. That difference shapes how each company's recent results read.

Vertiv's second-quarter 2026 results show broad-based demand across its core markets, with the Americas and APAC each growing 29% and EMEA returning to positive net sales growth. Acquisitions added 5% to revenues, and margin expansion of 410 basis points to 22.6% came from operational execution, productivity improvements, and favorable price-cost dynamics, partially offset by tariff impacts. Amphenol, meanwhile, has seen its IT datacom segment become its largest end market, now at 43% of sales. Its acquisition of CommScope's Connectivity and Cable Solutions business is now expected to contribute more than previously thought — $4.6 billion in revenues and 30 cents in earnings per share accretion in 2026, up from prior expectations of $4.1 billion and 15 cents. Both companies expect continued momentum in AI-related demand in the third quarter of 2026, with Vertiv guiding to net sales of $3.65 billion to $3.85 billion and Amphenol to revenues of $9.3 billion to $9.4 billion.