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

UMC has the lower trailing P/E: ALAB trades at 142.37 and UMC at 17.16. P/E is one valuation measure and does not by itself establish which business is cheaper.

Does ALAB or UMC pay a bigger dividend?

UMC pays a dividend (2.21% yield), while ALAB has no payments in the available dividend history.

Is ALAB or UMC more profitable?

UMC runs the higher net margin — ALAB at 30.74% versus UMC at 33.14%.

Astera Labs, Inc. Common Stock (ALAB) vs United Microelectronics Corporation (UMC)

A side-by-side comparison of Astera Labs, Inc. Common Stock and United Microelectronics Corporation across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of August 19, 2026. Differences are shown without an overall score or investment verdict.

ALAB

Astera Labs, Inc. Common Stock

$49.54B

$289.02TechnologyDelayed quote: Aug 19, 2026, 4:00 PM EDT

UMC

United Microelectronics Corporation

$45.20B

$18.12TechnologyAt close: Aug 19, 2026, 4:00 PM ET

Total return — ALAB vs UMC

growth of $100 · dividends reinvested · last 2y

ALAB +365.9% (+115.9%/yr)UMC +157.3% (+60.4%/yr)ALAB compounded faster over this window

ALAB UMC

ALAB vs UMC: by the numbers

•ALAB is the larger company ($49.54B vs $45.20B market cap).
•UMC trades at the lower trailing earnings multiple (17.16 vs 142.37 P/E), one valuation lens rather than an overall verdict.
•UMC converts more revenue to profit (33.14% vs 30.74% net margin).
•UMC pays a dividend (2.21% yield), while ALAB has no payments in the available dividend history.

Metrics side by side

Valuation

Metric	ALAB	UMC
P/E ratio	142.37	17.16
Forward P/E	73.50	N/A
P/S ratio	43.83	5.70
P/B ratio	30.52	3.27
EV / EBITDA	184.16	12.07
FCF yield	0.53%	4.14%

Profitability

Metric	ALAB	UMC
Gross margin	75.13%	30.60%
Operating margin	22.75%	19.71%
Net margin	30.74%	33.14%
ROE	21.41%	18.99%
ROIC	15.47%	8.07%

Dividends

Metric	ALAB	UMC
Dividend yield	N/A	2.21%
Payout ratio	N/A	75.33%

Growth (annualized)

Metric	ALAB	UMC
Revenue CAGR (5Y)	N/A	9.39%
EPS CAGR (5Y)	N/A	4.35%
FCF CAGR (5Y)	N/A	6.34%
Total return CAGR (5Y)	N/A	18.24%

Frequently asked

Which has the lower trailing P/E, ALAB or UMC?: UMC has the lower trailing P/E: ALAB trades at 142.37 and UMC at 17.16. P/E is one valuation measure and does not by itself establish which business is cheaper.
Does ALAB or UMC pay a bigger dividend?: UMC pays a dividend (2.21% yield), while ALAB has no payments in the available dividend history.
Is ALAB or UMC more profitable?: UMC runs the higher net margin — ALAB at 30.74% versus UMC at 33.14%.

Go deeper

Full ALAB analysis Full UMC analysis Interactive comparison tool

Dig into the metrics

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

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

Highest Dividend Yield Stocks Highest FCF Yield 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 August 19, 2026.