Is AMKR or ONTO cheaper?

On trailing earnings, AMKR is cheaper: AMKR trades at a 38.23 P/E and ONTO at 136.19.

Which has grown faster, AMKR or ONTO?

Over the past five years, ONTO grew revenue faster — AMKR at a 6.24% CAGR versus ONTO at 11.93%.

Does AMKR or ONTO pay a bigger dividend?

AMKR pays a dividend (0.50% yield) while ONTO does not currently pay one.

Is AMKR or ONTO more profitable?

ONTO runs the higher net margin — AMKR at 6.17% versus ONTO at 10.33%.

Which has been the better investment, AMKR or ONTO?

Over the past 10-year, ONTO delivered the higher annualized total return — AMKR at 28.07% versus ONTO at 30.16%. Past performance doesn't predict future results.

Amkor Technology, Inc. (AMKR) vs Onto Innovation Inc. (ONTO)

ONTO leads on 9 of 16 compared metrics, though AMKR is the cheaper stock.

A side-by-side comparison of Amkor Technology, Inc. and Onto Innovation Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of July 9, 2026. The ● marks the stronger figure on each row (cheaper multiple, higher margin/return).

AMKR

Amkor Technology, Inc.

Total return — AMKR vs ONTO

growth of $100 · last 28y

AMKR +402.7%ONTO +3008.8%ONTO compounded faster

Log scale — wide-divergence pair

AMKR ONTO

AMKR vs ONTO: by the numbers

•AMKR is the larger company ($17.89B vs $15.77B market cap).
•AMKR trades at the lower earnings multiple (38.23 vs 136.19 P/E).
•ONTO converts more revenue to profit (10.33% vs 6.17% net margin).
•ONTO grew revenue faster over the past five years (11.93% vs 6.24% CAGR).
•AMKR pays a dividend (0.50% yield) while ONTO does not currently pay one.

Which is better, AMKR or ONTO?

Metric tally: AMKR 7 · ONTO 9

It depends on what you're optimizing for:

ValueAMKR(lower P/E)

GrowthONTO(faster 5Y revenue CAGR)

QualityAMKR(higher ROIC)

Metrics side by side

Valuation

Metric	AMKR	ONTO
P/E ratio	38.23●	136.19
Forward P/E	32.16●	58.66
P/S ratio	2.36●	14.14
P/B ratio	3.68●	6.84
PEG ratio	5.38	3.96●
EV / EBITDA	14.31●	76.00
FCF yield	1.00%	1.64%●

Profitability

Metric	AMKR	ONTO
Gross margin	14.43%	48.80%●
Operating margin	7.58%	10.53%●
Net margin	6.17%	10.33%●
ROE	9.62%●	4.99%
ROIC	5.98%●	5.18%

Dividends

Metric	AMKR	ONTO
Dividend yield	0.50%	—
Payout ratio	22.12%	—

Growth (annualized)

Metric	AMKR	ONTO
Revenue CAGR (5Y)	6.24%	11.93%●
EPS CAGR (5Y)	1.52%	34.40%●
FCF CAGR (5Y)	-7.18%	11.03%●
Total return CAGR (5Y)	26.03%	33.80%●

Frequently asked

Which is better, AMKR or ONTO?: It depends on your goal. value: AMKR (lower P/E); growth: ONTO (faster 5Y revenue CAGR); quality: AMKR (higher ROIC). Across all compared metrics, ONTO leads 9 to 7.
Is AMKR or ONTO cheaper?: On trailing earnings, AMKR is cheaper: AMKR trades at a 38.23 P/E and ONTO at 136.19.
Which has grown faster, AMKR or ONTO?: Over the past five years, ONTO grew revenue faster — AMKR at a 6.24% CAGR versus ONTO at 11.93%.
Does AMKR or ONTO pay a bigger dividend?: AMKR pays a dividend (0.50% yield) while ONTO does not currently pay one.
Is AMKR or ONTO more profitable?: ONTO runs the higher net margin — AMKR at 6.17% versus ONTO at 10.33%.
Which has been the better investment, AMKR or ONTO?: Over the past 10-year, ONTO delivered the higher annualized total return — AMKR at 28.07% versus ONTO at 30.16%. Past performance doesn't predict future results.

Go deeper

Full AMKR analysis Full ONTO analysis Interactive comparison tool

Dig into the metrics

Amkor Technology P/E ratio Onto Innovation P/E ratio Amkor Technology dividend yield Onto Innovation dividend yield Amkor Technology ROE Onto Innovation ROE Amkor Technology operating margin Onto Innovation operating margin Amkor Technology revenue growth Onto Innovation revenue growth Amkor Technology free cash flow Onto Innovation free cash flow

Amkor Technology & Onto Innovation 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 July 9, 2026.