$CLS: Celestica Guides to 90% Growth in 2027 and the Market Is Paying 13x for It. Here's the Catch

Celestica walked into one of the most hostile tapes an AI infrastructure stock has faced all year and put up the kind of quarter that usually ends arguments. Revenue of $5.83 billion, up 83% from a year ago. Adjusted earnings of $3.30 per share, more than double last year's $1.58. And then the number that actually matters: a 2027 revenue outlook of $40 billion, roughly 90% growth on top of this year's $21 billion, published with Monday evening's earnings release, ahead of the company's investor day in New York today.

The stock is up about 10% in Tuesday trading, quoted near $271 as of 10:45 a.m. ET against Monday's close of $246.65. That headline hides the real story. Celestica ($CLS) closed at $304.61 on October 21. Over the next three sessions it lost 19% as investors dumped high-multiple AI names into the earnings event, part of a broader unwind that Benzinga described as the AI trade coming apart ahead of a critical print. So this morning's pop is not a breakout. It is a partial refund, and the stock still sits below where it traded a week ago, and well below the $310 per share at which Celestica itself sold $3.45 billion of new stock to the public in August.

The quarter, in hard numbers

Everything below comes from Celestica's earnings release filed with the SEC Monday evening and the accompanying 10-Q.

Third-quarter revenue of $5.83 billion came in far above the company's own guidance range of $5.25 to $5.55 billion, and above the Street consensus of roughly $5.37 billion. Adjusted EPS of $3.30 beat the guided $2.88 to $3.08 range and consensus near $2.94. GAAP EPS was $3.26. Adjusted operating margin reached 8.5%, up from 7.6% a year ago.

The growth engine is the Connectivity and Cloud Solutions segment, the business that builds networking switches, servers, and storage for hyperscale data centers. CCS revenue was $4.87 billion, up 102% year over year, at an 8.9% segment margin. The legacy diversified business, ATS, grew 23% to $0.96 billion. In other words, five-sixths of this company is now an AI data center infrastructure supplier, and that part of it just doubled.

Guidance moved up across the board. Fourth-quarter revenue is guided to $6.275 to $6.575 billion with adjusted EPS of $3.37 to $3.57. The full-year 2026 outlook rose to $21.0 billion in revenue and $11.55 in adjusted EPS, from $20.5 billion and $11.30. And for 2027, management guided to $40.0 billion in revenue, $21.50 in adjusted EPS, and a record 9.0% adjusted operating margin, with CEO Rob Mionis citing customer demand forecasts that are "meaningfully higher for 2028."

Here is the arithmetic that should stop you. At $271, with 126.1 million shares outstanding per the 10-Q, Celestica carries a market value of roughly $34 billion. Against the new 2027 guidance of $21.50 in adjusted EPS, that is about 12.6 times next year's guided earnings, for a company guiding to 90% revenue growth. Either the market is handing out free money this morning, or it does not believe the guide.

Which one it is depends on four things the quarter's headline numbers do not show: who the revenue actually comes from, what it now costs to win it, what the company's own August stock sale tells you, and what has to stay true in hyperscaler capital budgets for eighteen more months. That is the paid section.

A free membership gets you access to every free article at AlphaBriefing.com: Join AlphaBriefing

The rest of this briefing is for paid members: the three-customer concentration math buried in the 10-Q, the free cash flow guidance cut nobody is leading with, what the $310 equity raise says about management's own view of the stock, and the scenario-by-scenario price zones.

AlphaBriefing Paid gets you every investment thesis, scenario framework, and catalyst brief we publish, the analysis private intel clients pay four figures for, at a fraction of that.

Unlock the full briefing →