Which has the lower trailing P/E, CIEN or CLS?

CLS has the lower trailing P/E: CIEN trades at 78.02 and CLS at 35.99. P/E is one valuation measure and does not by itself establish which business is cheaper.

Which has grown faster, CIEN or CLS?

Over the past five years, CLS grew revenue faster — CIEN at a 12.05% CAGR versus CLS at 22.80%.

Is CIEN or CLS more profitable?

CIEN runs the higher net margin — CIEN at 10.87% versus CLS at 7.16%.

How have CIEN and CLS total returns compared?

Over the past 10 years, CIEN delivered 31.48% and CLS delivered 40.78% annualized total return. Past performance doesn't predict future results.

Ciena Corporation (CIEN) vs Celestica Inc. (CLS)

A side-by-side comparison of Ciena Corporation and Celestica Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of September 11, 2026. Differences are shown without an overall score or investment verdict.

CIEN

Ciena Corporation

$49.48B

$349.54TechnologyDelayed quote: Sep 11, 2026, 4:00 PM EDT

CLS

Celestica Inc.

$39.85B

$346.55TechnologyDelayed quote: Sep 11, 2026, 4:00 PM EDT

Total return — CIEN vs CLS

growth of $100 · dividends reinvested · last 10y

CIEN +1408.4% (+31.2%/yr)CLS +3063.6% (+41.3%/yr)CLS compounded faster over this window

CIEN CLS

CIEN vs CLS: by the numbers

•CIEN is the larger company ($49.48B vs $39.85B market cap).
•CLS trades at the lower trailing earnings multiple (35.99 vs 78.02 P/E), one valuation lens rather than an overall verdict.
•CIEN converts more revenue to profit (10.87% vs 7.16% net margin).
•CLS grew revenue faster over the past five years (22.80% vs 12.05% CAGR).

Metrics side by side

Valuation

Metric	CIEN	CLS
P/E ratio	78.02	35.99
Forward P/E	48.88	30.38
P/S ratio	8.22	2.55
P/B ratio	16.19	16.07
EV / EBITDA	45.21	27.75
FCF yield	1.45%	1.30%

Profitability

Metric	CIEN	CLS
Gross margin	44.07%	11.59%
Operating margin	14.10%	8.13%
Net margin	10.87%	7.16%
ROE	21.41%	45.07%
ROIC	11.56%	29.75%

Growth (annualized)

Metric	CIEN	CLS
Revenue CAGR (5Y)	12.05%	22.80%
EPS CAGR (5Y)	-17.95%	73.33%
FCF CAGR (5Y)	13.27%	29.00%
Total return CAGR (5Y)	44.07%	106.10%

Frequently asked

Which has the lower trailing P/E, CIEN or CLS?: CLS has the lower trailing P/E: CIEN trades at 78.02 and CLS at 35.99. P/E is one valuation measure and does not by itself establish which business is cheaper.
Which has grown faster, CIEN or CLS?: Over the past five years, CLS grew revenue faster — CIEN at a 12.05% CAGR versus CLS at 22.80%.
Is CIEN or CLS more profitable?: CIEN runs the higher net margin — CIEN at 10.87% versus CLS at 7.16%.
How have CIEN and CLS total returns compared?: Over the past 10 years, CIEN delivered 31.48% and CLS delivered 40.78% annualized total return. Past performance doesn't predict future results.

Go deeper

Full CIEN analysis Full CLS analysis Interactive comparison tool

Dig into the metrics

Ciena P/E ratio Celestica P/E ratio Ciena ROE Celestica ROE Ciena operating margin Celestica operating margin Ciena revenue growth Celestica revenue growth Ciena free cash flow Celestica free cash flow

Ciena & Celestica appear in these rankings

Fastest Revenue Growth Stocks Highest ROE Stocks Highest ROIC Stocks Highest 10-Year Total Return Stocks

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 11, 2026.