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 July 28, 2026. Differences are shown without an overall score or investment verdict.
AAOI
Applied Optoelectronics, Inc.
$88.14TechnologyDelayed quote: Jul 28, 2026, 4:00 PM EDT
CLS
Celestica Inc.
$350.20TechnologyDelayed quote: Jul 28, 2026, 4:00 PM EDT
Total return — AAOI vs CLS
growth of $100 · dividends reinvested · last 13yAAOI +882.1%CLS +2995.6%CLS compounded faster
AAOI CLS
AAOI vs CLS: by the numbers
- •CLS is the larger company ($40.26B vs $7.07B market cap).
- •CLS is profitable (7.16% net margin) while AAOI runs a net loss (-8.55%).
- •CLS grew revenue faster over the past five years (22.80% vs 15.77% CAGR).
Metrics side by side
Valuation
| Metric | AAOI | CLS |
|---|---|---|
| P/E ratio | N/A | 33.05 |
| Forward P/E | 94.67 | 31.47 |
| P/S ratio | 14.66 | 2.37 |
| P/B ratio | 6.72 | 14.91 |
| PEG ratio | N/A | 0.39 |
| EV / EBITDA | N/A | 26.58 |
| FCF yield | N/A | 1.41% |
Profitability
| Metric | AAOI | CLS |
|---|---|---|
| Gross margin | 29.64% | 11.59% |
| Operating margin | -11.57% | 8.13% |
| Net margin | -8.55% | 7.16% |
| ROE | -3.92% | 45.07% |
| ROIC | -4.71% | 27.74% |
Growth (annualized)
| Metric | AAOI | CLS |
|---|---|---|
| Revenue CAGR (5Y) | 15.77% | 22.80% |
| EPS CAGR (5Y) | N/A | 73.33% |
| FCF CAGR (5Y) | N/A | 29.00% |
| Total return CAGR (5Y) | 68.47% | 105.32% |
Frequently asked
- Which has grown faster, AAOI or CLS?
- Over the past five years, CLS grew revenue faster — AAOI at a 15.77% CAGR versus CLS at 22.80%.
- Is AAOI or CLS more profitable?
- CLS runs the higher net margin — AAOI at -8.55% versus CLS at 7.16%.
- How have AAOI and CLS total returns compared?
- Over the past 10 years, AAOI delivered 22.61% and CLS delivered 40.11% annualized total return. Past performance doesn't predict future results.
Go deeper
Dig into the metrics
Applied Optoelectronics P/E ratioCelestica P/E ratioApplied Optoelectronics dividend yieldCelestica dividend yieldApplied 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 July 28, 2026.