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Celestica CLS Business Segments

Q1 '26Q4 '25Q3 '25Q2 '25Q1 '25
Revenue by Business
ATS$806M+1.4%$795.1M+1.8%$781M-4.7%$819.1M+1.5%$807.2M+0.2%
CCS$3.24B+13.3%$2.86B+18.5%$2.41B+16.3%$2.07B+12.6%$1.84B+5.8%
% of total by Business
ATS20%24%-4.0pp28%-2.0pp30%
CCS80%+78.0pp2%-74.0pp76%+4.0pp72%+2.0pp70%
Operating Income (Loss) by Business
ATS$48M+14.0%$42.1M-1.6%$42.8M-1.6%$43.5M+6.9%$40.7M+10.0%
CCS$277.2M+15.4%$240.2M+20.5%$199.4M+16.5%$171.2M+16.4%$147.1M+7.7%
Segment margin, percentage by Business
ATS6%5.5%+0.2pp5.3%+0.3pp5%
CCS8.6%8.3%0.0pp8.3%+0.3pp8%+7.8pp
Cost of Sales by Business
ATS$710.3M-2.1%$725.5M+3.9%$698M-3.9%$726.1M-0.1%$726.5M-2.7%
CCS$2.88B+14.3%$2.52B+18.7%$2.12B+16.0%$1.83B+12.2%$1.63B+7.3%
Other segment costs by Business
ATS$47.7M+73.5%$27.5M-31.6%$40.2M-18.8%$49.5M+23.8%$40M+81.0%
CCS$85.4M-15.9%$101.6M+10.4%$92M+25.2%$73.5M+15.4%$63.7M-24.3%

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Questions, answered.

How does Celestica break its business down?
Celestica (CLS) reports revenue by business across 2 parts — ATS and CCS. Each is extracted from the segment footnotes and tracked over time.
Where does Celestica's segment data come from?
Segment breakdowns are pulled from the segment footnotes in Celestica's SEC filings (the XBRL dimensional tags), so every line ties back to a reported figure. Switch between quarterly, annual, and TTM, or open any segment for its full history.