Celestica, which builds networking and compute hardware for data-center customers, told investors on its Q3 2026 earnings call that revenue surged 83% as AI infrastructure demand accelerated. That is a different kind of evidence than the market has mostly been working with lately: it is actual shipped product, not a capex pledge or a projected backlog.
The timing matters. CoreWeave and other AI-linked stocks rose this week after investors dug deeper into Anthropic's IPO filing and found the same spending trends that had already been propping up AI shares, according to MarketWatch. Celestica's number offers a way to check that story against something concrete: if hyperscalers are actually ordering, a contract manufacturer sitting in the middle of that supply chain should see it in revenue before it shows up anywhere else. It did.
The open question is durability. A manufacturer's order book can run ahead of end demand if customers are stocking up against shortages rather than deploying immediately, and Celestica's call did not address how much of the 83% reflects pull-forward buying versus deployed capacity. One quarter of hardware shipments does not resolve the debate over whether AI capex is backed by matching revenue — it just adds a real number to a conversation that has mostly run on filings and forecasts.