Applied Optoelectronics, Inc. (AAOI) vs Celestica Inc. (CLS)
A side-by-side comparison of Applied Optoelectronics, Inc. and Celestica Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of September 10, 2026. Differences are shown without an overall score or investment verdict.
AAOI
Applied Optoelectronics, Inc.
$105.36TechnologyDelayed quote: Sep 11, 2026, 4:00 PM EDT
CLS
Celestica Inc.
$346.55TechnologyDelayed quote: Sep 11, 2026, 4:00 PM EDT
Total return — AAOI vs CLS
growth of $100 · dividends reinvested · last 10yAAOI +377.1% (+16.9%/yr)CLS +2872.8% (+40.4%/yr)CLS compounded faster over this window
Log scale — wide-divergence pair
AAOI CLS
AAOI vs CLS: by the numbers
- •CLS is the larger company ($39.85B vs $8.45B market cap).
- •CLS is profitable (7.16% net margin) while AAOI runs a net loss (-9.57%).
- •CLS grew revenue faster over the past five years (22.80% vs 20.68% CAGR).
Metrics side by side
Valuation
| Metric | AAOI | CLS |
|---|---|---|
| P/E ratio | N/A | 35.99 |
| Forward P/E | 142.38 | 30.38 |
| P/S ratio | 14.19 | 2.55 |
| P/B ratio | 5.07 | 16.07 |
| EV / EBITDA | N/A | 27.75 |
| FCF yield | N/A | 1.30% |
Profitability
| Metric | AAOI | CLS |
|---|---|---|
| Gross margin | 28.92% | 11.59% |
| Operating margin | -11.31% | 8.13% |
| Net margin | -9.57% | 7.16% |
| ROE | -3.42% | 45.07% |
| ROIC | -3.49% | 29.75% |
Growth (annualized)
| Metric | AAOI | CLS |
|---|---|---|
| Revenue CAGR (5Y) | 20.68% | 22.80% |
| EPS CAGR (5Y) | N/A | 73.33% |
| FCF CAGR (5Y) | N/A | 29.00% |
| Total return CAGR (5Y) | 69.30% | 106.10% |
Frequently asked
- Which has grown faster, AAOI or CLS?
- Over the past five years, CLS grew revenue faster — AAOI at a 20.68% CAGR versus CLS at 22.80%.
- Is AAOI or CLS more profitable?
- CLS runs the higher net margin — AAOI at -9.57% versus CLS at 7.16%.
- How have AAOI and CLS total returns compared?
- Over the past 10 years, AAOI delivered 18.06% and CLS delivered 40.78% annualized total return. Past performance doesn't predict future results.
Go deeper
Dig into the metrics
Celestica P/E ratioApplied Optoelectronics ROECelestica ROEApplied Optoelectronics operating marginCelestica operating marginApplied Optoelectronics revenue growthCelestica revenue growthApplied Optoelectronics free cash flowCelestica free cash flow
Applied Optoelectronics & Celestica appear in these rankings
Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified September 10, 2026.