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

CLS has the lower trailing P/E: CIEN trades at 125.76 and CLS at 33.05. 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 10.39% CAGR versus CLS at 22.80%.

Is CIEN or CLS more profitable?

CIEN runs the higher net margin — CIEN at 7.87% versus CLS at 7.16%.

How have CIEN and CLS total returns compared?

Over the past 10 years, CIEN delivered 33.25% and CLS delivered 40.11% 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 July 28, 2026. Differences are shown without an overall score or investment verdict.

CIEN

Ciena Corporation

$49.62B

$350.51TechnologyDelayed quote: Jul 28, 2026, 4:00 PM EDT

CLS

Celestica Inc.

$40.26B

$350.20TechnologyDelayed quote: Jul 28, 2026, 4:00 PM EDT

Total return — CIEN vs CLS

growth of $100 · dividends reinvested · last 28y

CIEN +51.8%CLS +3385.3%CLS compounded faster

Log scale — wide-divergence pair

CIEN CLS

CIEN vs CLS: by the numbers

•CIEN is the larger company ($49.62B vs $40.26B market cap).
•CLS trades at the lower trailing earnings multiple (33.05 vs 125.76 P/E), one valuation lens rather than an overall verdict.
•CIEN converts more revenue to profit (7.87% vs 7.16% net margin).
•CLS grew revenue faster over the past five years (22.80% vs 10.39% CAGR).

Metrics side by side

Valuation

Metric	CIEN	CLS
P/E ratio	125.76	33.05
Forward P/E	57.74	31.47
P/S ratio	9.91	2.37
P/B ratio	19.09	14.91
PEG ratio	4.37	0.39
EV / EBITDA	69.09	26.58
FCF yield	1.51%	1.41%

Profitability

Metric	CIEN	CLS
Gross margin	43.05%	11.59%
Operating margin	11.18%	8.13%
Net margin	7.87%	7.16%
ROE	15.15%	45.07%
ROIC	5.35%	27.74%

Growth (annualized)

Metric	CIEN	CLS
Revenue CAGR (5Y)	10.39%	22.80%
EPS CAGR (5Y)	-17.95%	73.33%
FCF CAGR (5Y)	11.11%	29.00%
Total return CAGR (5Y)	43.20%	105.32%

Frequently asked

Which has the lower trailing P/E, CIEN or CLS?: CLS has the lower trailing P/E: CIEN trades at 125.76 and CLS at 33.05. 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 10.39% CAGR versus CLS at 22.80%.
Is CIEN or CLS more profitable?: CIEN runs the higher net margin — CIEN at 7.87% versus CLS at 7.16%.
How have CIEN and CLS total returns compared?: Over the past 10 years, CIEN delivered 33.25% and CLS delivered 40.11% 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 dividend yield Celestica dividend yield 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 July 28, 2026.