Amphenol (APH) is lower today as investors rotate out of AI/critical-digital-infrastructure exposure, with selling pressure spreading across the data-center supply chain after Vertiv’s latest quarterly update triggered a risk-off read-through for AI buildout beneficiaries. The pullback also reflects positioning into Amphenol’s own near-term catalyst, as the company is scheduled to report first-quarter 2026 results on April 29, 2026, prompting some traders to trim exposure ahead of the release.

Vertiv reported first-quarter results on April 22, 2026 and updated full-year guidance, but the market reaction signaled that expectations for AI-driven infrastructure growth were already elevated. As that trade cooled, investors marked down adjacent “pick-and-shovel” connectivity names—Amphenol included—on concern that demand or timing for data-center deployments could be less linear than the market had priced in.

The next decisive catalyst is Amphenol’s Q1 2026 earnings on April 29, 2026, including management commentary on data-center, server, and broader industrial demand trends. Investors will also focus on any changes to 2026 outlook assumptions and whether the company reinforces prior expectations for contributions from its Communications Solutions-related businesses, as well as signals on order momentum and margins.