Is ALAB or UMC cheaper?

On trailing earnings, UMC is cheaper: ALAB trades at a 268.26 P/E and UMC at 48.60.

Does ALAB or UMC pay a bigger dividend?

UMC pays a dividend (1.84% yield) while ALAB does not currently pay one.

Is ALAB or UMC more profitable?

ALAB runs the higher net margin — ALAB at 26.72% versus UMC at 20.72%.

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

ALAB and UMC are evenly matched — 5 metrics each of 10.

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 June 24, 2026. The ● marks the stronger figure on each row (cheaper multiple, higher margin/return).

ALAB

Astera Labs, Inc. Common Stock

$68.05B

$397.02Technology

UMC

United Microelectronics Corporation

$65.35B

$26.20Technology

Total return — ALAB vs UMC

growth of $100 · last 2y

ALAB +540.0%UMC +217.2%ALAB compounded faster

ALAB UMC

ALAB vs UMC: by the numbers

•ALAB is the larger company ($68.05B vs $65.35B market cap).
•UMC trades at the lower earnings multiple (48.60 vs 268.26 P/E).
•ALAB converts more revenue to profit (26.72% vs 20.72% net margin).
•UMC pays a dividend (1.84% yield) while ALAB does not currently pay one.

Which is better, ALAB or UMC?

Metric tally: ALAB 5 · UMC 5

It depends on what you're optimizing for:

ValueUMC(lower P/E)

QualityALAB(higher ROIC)

Metrics side by side

Valuation

Metric	ALAB	UMC
P/E ratio	268.26	48.60●
Forward P/E	91.09	—
P/S ratio	71.82	8.54●
P/B ratio	48.14	5.41●
PEG ratio	—	9.27
EV / EBITDA	256.98	17.91●
FCF yield	0.48%	2.46%●

Profitability

Metric	ALAB	UMC
Gross margin	75.99%●	29.60%
Operating margin	22.36%●	18.85%
Net margin	26.72%●	20.72%
ROE	17.91%●	12.74%
ROIC	12.40%●	7.35%

Dividends

Metric	ALAB	UMC
Dividend yield	—	1.84%
Payout ratio	—	90.81%

Growth (annualized)

Metric	ALAB	UMC
Revenue CAGR (5Y)	—	10.42%
EPS CAGR (5Y)	—	4.35%
FCF CAGR (5Y)	—	4.51%
Total return CAGR (5Y)	—	30.10%

Frequently asked

Which is better, ALAB or UMC?: It depends on your goal. value: UMC (lower P/E); quality: ALAB (higher ROIC). Across all compared metrics, they are evenly matched.
Is ALAB or UMC cheaper?: On trailing earnings, UMC is cheaper: ALAB trades at a 268.26 P/E and UMC at 48.60.
Does ALAB or UMC pay a bigger dividend?: UMC pays a dividend (1.84% yield) while ALAB does not currently pay one.
Is ALAB or UMC more profitable?: ALAB runs the higher net margin — ALAB at 26.72% versus UMC at 20.72%.

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 Astera Labs, Inc. Common Stock dividend yield 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

Best 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 June 24, 2026.