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

CIEN has the lower trailing P/E: ALAB trades at 164.62 and CIEN at 137.46. P/E is one valuation measure and does not by itself establish which business is cheaper.

Is ALAB or CIEN more profitable?

ALAB runs the higher net margin — ALAB at 30.74% versus CIEN at 7.87%.

Astera Labs, Inc. Common Stock (ALAB) vs Ciena Corporation (CIEN)

A side-by-side comparison of Astera Labs, Inc. Common Stock and Ciena Corporation across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of August 9, 2026. Differences are shown without an overall score or investment verdict.

ALAB

Astera Labs, Inc. Common Stock

$57.28B

$334.17TechnologyAt close: Aug 7, 2026, 4:00 PM ET

CIEN

Ciena Corporation

$58.38B

$412.39TechnologyAt close: Aug 7, 2026, 4:00 PM ET

Total return — ALAB vs CIEN

growth of $100 · dividends reinvested · last 2y

ALAB +438.7%CIEN +700.6%CIEN compounded faster

ALAB CIEN

ALAB vs CIEN: by the numbers

•CIEN is the larger company ($58.38B vs $57.28B market cap).
•CIEN trades at the lower trailing earnings multiple (137.46 vs 164.62 P/E), one valuation lens rather than an overall verdict.
•ALAB converts more revenue to profit (30.74% vs 7.87% net margin).

Metrics side by side

Valuation

Metric	ALAB	CIEN
P/E ratio	164.62	137.46
Forward P/E	84.98	63.12
P/S ratio	50.67	10.83
P/B ratio	35.29	20.86
PEG ratio	N/A	4.37
EV / EBITDA	212.99	75.46
FCF yield	0.45%	1.38%

Profitability

Metric	ALAB	CIEN
Gross margin	75.13%	43.05%
Operating margin	22.75%	11.18%
Net margin	30.74%	7.87%
ROE	21.41%	15.15%
ROIC	12.40%	5.35%

Growth (annualized)

Metric	ALAB	CIEN
Revenue CAGR (5Y)	N/A	10.39%
EPS CAGR (5Y)	N/A	-17.95%
FCF CAGR (5Y)	N/A	11.11%
Total return CAGR (5Y)	N/A	48.60%

Frequently asked

Which has the lower trailing P/E, ALAB or CIEN?: CIEN has the lower trailing P/E: ALAB trades at 164.62 and CIEN at 137.46. P/E is one valuation measure and does not by itself establish which business is cheaper.
Is ALAB or CIEN more profitable?: ALAB runs the higher net margin — ALAB at 30.74% versus CIEN at 7.87%.

Go deeper

Full ALAB analysis Full CIEN analysis Interactive comparison tool

Dig into the metrics

Astera Labs, Inc. Common Stock P/E ratio Ciena P/E ratio Astera Labs, Inc. Common Stock dividend yield Ciena dividend yield Astera Labs, Inc. Common Stock ROE Ciena ROE Astera Labs, Inc. Common Stock operating margin Ciena operating margin Astera Labs, Inc. Common Stock revenue growth Ciena revenue growth Astera Labs, Inc. Common Stock free cash flow Ciena free cash flow

Astera Labs, Inc. Common Stock & Ciena appear in these rankings

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 August 9, 2026.