Bernstein Says Wall Street Is Sleeping on Celestica

Bernstein says Wall Street may be underestimating Celestica, a networking stock with direct exposure to the buildouts of Google and OpenAI.

The investment research firm argues that a critical bottleneck inside data centers is creating a massive runway for networking stocks, and Celestica sits squarely in the path of that demand.

The thesis rests on a simple constraint: compute capacity inside modern AI data centers is only as useful as the networking that connects it. As hyperscalers and AI labs scale clusters of GPUs, the links between those machines become a choke point. Bernstein points to this bottleneck as the driver of a multi-year opportunity for networking suppliers.

Celestica, which designs and manufactures networking and interconnect hardware, counts Google and OpenAI among the customers tied to its growth story. That customer exposure links the stock directly to two of the largest AI infrastructure spenders in the market.

For investors, the case is that the market has not fully priced the scale of networking demand implied by AI cluster buildouts. Bernstein's view implies upside for Celestica if data center operators continue to expand capacity and the networking layer remains a binding constraint.

The so-what: if Bernstein is right, the networking layer of the AI stack — not just the chips — becomes a durable source of order growth, and Celestica's ties to Google and OpenAI position it to capture a share of that spend.