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Celestica guides to $40 billion while the tape writes a 27% discount

A record quarter, a 2027 outlook that doubles again, and a stock 41% off its June peak — the gap is the story
CLS · Earnings Call · 2026-10-27

The beat is real; the tape is not buying it

Celestica's third quarter was not the problem. “Revenue in the third quarter was $5.83 billion, up 83% and above the high end of our guidance range.” — Todd Ankenmann, Chief Financial Officer (CFO) · 2026-10-27 Adjusted EPS was $3.30, non-GAAP operating margin hit 8.5%, the highest in company history, and adjusted ROIC was 64.7%, up roughly 27 percentage points year over year. Management then lifted 2026 to $21 billion of revenue and $11.55 of EPS, and guided 2027 to $40 billion of revenue and $21.50 of EPS. Revenue has more than doubled in two years and is now guided to roughly quintuple in four. Yet the stock is 26.6% lower over the last 90 days and 41.5% below its June peak. That gap, not the quarter, is the story. The market is treating Celestica as a high-beta AI infrastructure derivative at the exact moment the AI hardware tape is rolling over — and management is asking investors to fund the next leg of growth out of its own balance sheet.

From switch builder to rack-scale architect

The call's language has changed in a meaningful way. The company's own keyword set this quarter is dominated by system level design, integrated optics, Frontier AI lab customers and rack-scale architecture. That is not boilerplate. It reflects a real migration from building 800G and 1.6T switches to co-designing full AI racks: compute, networking, power, cooling and software. Even the vocabulary of the customer base has shifted — hyperscalers now sit alongside labs that buy whole accelerator clusters rather than ports. The specificity is new. In April, CFO Mandeep Chawla said “we'll give more specificity around the number as we go through the year” — Mandeep Chawla, Chief Financial Officer · 2026-04-28. Last October the message was even more cautious: “it's probably 12 months too early to talk to you about what 2027 really is going to look like” — Stephen Dorwart, Senior Vice President, Chief Commercial Officer · 2025-10-28. Today the company guides 2027 revenue to $40 billion and describes a 2028 customer demand forecast, on awarded programs alone, that is meaningfully higher still. The OpenAI Jalapeño program is the clearest evidence. Steve Dorwart framed the AMD switch collaboration as a showcase — “one of the latest projects that serves as a valuable showcase of our networking design prowess is our collaboration with AMD on the DS6010 switch” — Steven Dorwart, Executive, Connectivity & Cloud Solutions segment leader · 2026-10-27 — and described Jalapeño as 128 accelerators per rack, a dual-rack system with Ethernet scale-up to 2,048 accelerators and a custom SONiC stack. The phrase proof point has become a drumbeat because management is trying to convert one hyperscaler win into a platform narrative. The networking franchise is the foundation: 31% of 800G-and-above revenue and 44% of port shipments, with 58% share of custom Ethernet switch revenue.

The capital-intensity tax

The catch is cash. Growth of this speed consumes working capital and capex before it produces free cash flow. Celestica cut its 2026 free cash flow outlook to $460 million from $600 million. Inventory ended the quarter at $4.5 billion, up $1.1 billion sequentially and $2.5 billion year over year. Capital expenditures are running near $1 billion in 2026 and are guided to $1.5-2 billion in 2027. Then the admission.

The combination of these investments will result in a net use of cash in 2027.

Todd Ankenmann, Chief Financial Officer (CFO) · 2026-10-27
The company raised $3.45 billion of equity in August and holds $4 billion of cash, so it is not strained — effective net cash turned positive after years in deficit. But a story sold as relentlessly cash-generative is now asking investors to underwrite a multi-year investment cycle before free cash flow inflects. Todd Ankenmann's framing was explicit: “we're confident we'll be able to target to return to positive cash flow in 2028” — Todd Ankenmann, Chief Financial Officer (CFO) · 2026-10-27. That is why the tape matters. Free cash flow remains positive but modest, and price to free cash flow is still near 95x. Price to revenue sits near 2.7x — down from the highs, still rich for a manufacturer. The market is not paying for today's earnings; it is discounting the durability of the 2028 ramp and the credibility of the cash conversion that follows it.

Concentration, optics and the AI tape

Customer concentration is the other tension. Three customers accounted for 35%, 17% and 14% of revenue — roughly two-thirds of the company. Steve Dorwart's answer on diversifying that base was unusually candid: “it is not always good to have all your eggs in one basket, but if you have got a very strong basket and you watch it closely, I think it is an acceptable place to be” — Steven Dorwart, Executive, Connectivity & Cloud Solutions segment leader · 2026-10-27. Fair, but also a risk the market can price. On the supply side, the company's own framing was defensive: “our $40 billion guide took into consideration the risks around the ramps, the component availability, and the operational execution” — Todd Ankenmann, Chief Financial Officer (CFO) · 2026-10-27. The global tape is voting on the same theme. AI data center exposure was a huge 360-day winner and a 90-day decliner — the exact shape of Celestica's own chart. So the drawdown is not idiosyncratic; it is a broad de-rating of AI hardware even as orders accelerate. The company's bet is that Ethernet scale-up and co-packaged optics move it higher up the value chain before the cycle matures — a scale-up switch market projected to grow from negligible in 2026 to $55 billion by 2030, and a CPO award ramping in late 2027. If the 2028 forecast is real, the fundamental case is intact and this looks like a valuation reset rather than a broken thesis. But the burden of proof has moved from revenue growth to cash conversion and customer diversification. Celestica has guided the top line. Now it has to show the market the cash.