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Call sheet · Q3'25

Celestica (CLS)

Q3'25 earnings call · held October 28, 2025 · compared with the Q2'25 call · management-credibility review
9/12
Disclosure score
1 high, 5 medium, 2 low flags
Financial quality
Bottom line
The 1.6T acceleration is the real story here, not the headline numbers. Celestica just pulled forward an entire technology cycle by achieving first power-on of 1.6T switches and moving mass production into 2026, which should extend their networking dominance for another generation. Yes, 79% HPS growth is impressive, but the market is missing that this is a share gain story, not just a TAM expansion story. The binding constraint is increasingly customer concentration risk, with the top customer at 30% of revenue and growing. Management's quote about hyperscalers moving from 200K to '1 million accelerators' suggests the TAM could be 5x larger than modeled, but execution risk is rising with the complexity. My view changes if enterprise AI/ML stays negative through Q1 2026 or if 1.6T ramps slip beyond H2 2026.

The 30-second version

  • The sleeper: 1.6T switch programs are ramping a full year earlier than expected, with mass production in 2026 not 2027
  • The obvious: 79% HPS growth masks a critical shift from 400G to 800G happening faster than anyone modeled
  • The red flag: Enterprise AI/ML compute still declining despite 'ramping next-generation program'

What changed this quarter

MetricQ2'25Q3'25Change
Revenue$2.89B (+21% YoY)$3.19B (+28% YoY)+700 bps YoY acceleration
Adjusted EPS$1.39 (+54% YoY)$1.58 (+52% YoY)Growth rate decelerating
Operating Margin7.4%7.6%+20 bps sequential
CCS Revenue$2.07B (+28% YoY)$2.41B (+43% YoY)+1500 bps growth acceleration
ATS Revenue$819M (+7% YoY)$781M (-4% YoY)Turned negative
HPS Revenue$1.2B (+82% YoY)$1.4B (+79% YoY)Growth decelerating but absolute dollars up
Communications Revenue+75% YoY+82% YoY+700 bps acceleration
Enterprise Revenue-37% YoY-24% YoYLess bad but still deeply negative
Free Cash Flow$120M (Q2)$89M (Q3)-26% sequential decline
CCS Margin8.3%8.3%Flat despite mix shift to HPS

Accountability tracked

8 new promises made5 narrative shifts flagged6 prior promises scored
Inside the full report
The complete write-up covers the full promise ledger with kept/missed calls, disclosure-quality scoring, the metrics-vanished check, verification items, and the questions to ask next quarter.
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Scores, kept-promise rates, and flags on this site reflect the author's opinion, applying a stated methodology to statements management made on public earnings calls. Informational and educational purposes only - not investment advice, a recommendation, or an offer to buy or sell any security. Sources believed reliable but not guaranteed; the author may hold positions in the securities discussed.

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