Celestica (CLS)
The desk's stance
On our research list, not on the slate.
What the company does
The contract builder of AI infrastructure: designs and manufactures the 800G/1.6T network switches, liquid-cooled racks, and custom servers hyperscalers deploy — turning Broadcom’s switch silicon into installed hardware.
Why it matters: The invisible layer between chip designers and datacenters: when a hyperscaler orders a custom switch or an ASIC rack, Celestica is who actually builds it. AI networking share gains made it one of the market’s quiet monsters.
Outlook: 2026 revenue guidance raised toward $17–19B on AI datacenter demand; won a co-packaged-optics 1.6T switch program with a hyperscaler, and the cloud segment (~75% of revenue) keeps compounding on the 800G→1.6T transition.
In short: Hyperscale AI hardware manufacturing. Category: AI Hardware Infrastructure & ODM. Sector: Technology, Electronic Components.
G-Street Value and Score
G-Street Value: $436, computed Oct 18, 2026 (confidence: medium).
How we got there: 50% analyst leg $436 (street consensus, after 8% optimism discount) + 50% GainStreet factor value $556.72 (28.3× fwd EPS anchored to hardware multiples) — capped at the analyst leg; factors never out-bull the street. 4 analyst targets have no linked source and are shown but not counted; this value will not open a position until they are sourced.
G-Street Score: 61 out of 100 (Medium).
- Top-line growth & guidance: 27 of 32
- Margin power: 0 of 15
- Revenue visibility & quality: 3 of 11
- Profitability & balance sheet: 17 of 24
- Capital allocation & governance: 5 of 6
- Valuation, sentiment & momentum: 9 of 12
Our current thesis
Updated Oct 15, 2026
The thesis
- Hyperscaler 800G and 1.6T networking demand drives accelerating sequential top-line growth and earnings beats.
- Proprietary JDM and ODM co-design expands operating margins and deepens hyperscaler switching costs.
- Forward P/E compressed to 16.4x following sharp pullback, offering favorable risk-reward on 60%+ growth.
Risks
- Extreme customer concentration with top three clients generating 65% of total revenue.
- Slim 7.2% net margins leave bottom-line earnings vulnerable to supply chain component inflation.
- Annualized capex near $1B to support capacity expansion significantly constrains free cash flow.
What we're watching
- Q3 2026 earnings on October 26 tracking consensus revenue expectations of $5.45 billion.
- Execution milestones and operating margins on next-generation 1.6T switch production ramps.
- Stabilization of free cash flow against management's reaffirmed $500 million full-year target.
Latest
CLS pulled back 9.5% to $323.32 (16.4x forward P/E), despite accelerating Q2 revenue to $4.70B (+62.4% YoY) and extending a four-quarter earnings beat streak. Management raised full-year 2026 guidance to $20.5B revenue and $11.30 adjusted EPS, supported by surging hyperscaler orders for 800G and 1.6T networking switches. Heavy capacity capex reaching $264M in Q2 continues to compress near-term free cash flow ahead of Q3 earnings on October 26.
Key numbers
As of Oct 16, 2026: market cap $38.3B · revenue growth +62.4% year over year · gross margin 12.0% · net margin 7.2% · forward P/E 15.4 · next earnings Oct 26, 2026.
On the Gainz Lab maps
Who it does business with
- Broadcom supplies Celestica — Switch silicon (about $1.5B a year). Celestica builds its hyperscaler network switches around Broadcom’s Tomahawk-class Ethernet silicon.
- Celestica supplies Alphabet (Google) — AI racks & switches (about $4.0B a year). Google is Celestica’s largest customer: custom TPU racks and datacenter network switches, built to order.
- Celestica supplies Meta — 800G switches (about $2.5B a year). Celestica designs and manufactures 800G network switches and AI compute hardware for Meta’s datacenter buildout.