Amkor Technology (AMKR) vs Silicon Motion Technology (SIMO)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 7, 2026.
Summary
Silicon Motion Technology (SIMO) has outperformed Amkor Technology (AMKR) over the past year, gaining 199.7% versus a gain of 75.7%. Over five years, SIMO leads with a +322.4% price change compared with +134.4% for AMKR. Amkor Technology is the larger company by market cap ($12.99 billion vs $9.69 billion), about 1.3 times the size, while Silicon Motion Technology is growing revenue faster (+10.2% vs +6.2%).
On valuation, Silicon Motion Technology trades at a lower forward P/E (18.0x vs 18.6x for Amkor Technology). Silicon Motion Technology offers the higher dividend yield (0.70% vs 0.64%). Silicon Motion Technology converts more of its revenue into profit, with a net margin of 13.8% versus 5.6%.
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | AMKR | SIMO |
|---|---|---|
| Share price | $52.27 | $285.78 |
| Market cap | $12.99B | $9.69B |
| 1-day change | -2.10% | +0.29% |
| YTD return | +32.40% | +205.40% |
| 1-year return | +75.70% | +199.75% |
| 5-year return | +134.43% | +322.38% |
| P/E ratio (TTM) | 23.44 | 33.42 |
| Forward P/E | 18.63 | 18.00 |
| EPS (TTM) | $2.23 | $8.55 |
| Dividend yield | 0.64% | 0.70% |
| Annual dividend | $0.333 | $2.00 |
| Revenue (latest FY) | $6.71B | $885.63M |
| Revenue growth (YoY) | +6.18% | +10.21% |
| Net income (latest FY) | $373.89M | $122.64M |
| Gross margin | 13.99% | 48.27% |
| Operating margin | 6.97% | 10.51% |
| Net margin | 5.57% | 13.85% |
| 52-week high | $96.68 | $355.00 |
| 52-week low | $28.19 | $79.76 |
| Distance from 52-week high | -45.94% | -19.50% |
| Analyst consensus | none | strong_buy |
| Avg. price target upside | +46.16% | +29.37% |
| Average volume | 4.72M | 942.35K |
| Shares outstanding | 248.45M | 33.91M |
| Employees | 30,800 | 2,009 |
| Sector | Technology | Technology |
| Industry | Semiconductors | Semiconductors |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- SIMO has outperformed AMKR by 124.0 percentage points over the past year.
- Silicon Motion Technology trades at a higher earnings multiple (33.4x vs 23.4x trailing P/E).
- Silicon Motion Technology is more profitable, keeping 13.8 cents of every revenue dollar as net income versus 5.6 cents for Amkor Technology.
About Amkor Technology
AMKR stock →Amkor Technology, Inc. provides outsourced semiconductor packaging and test services in the United States, Japan, Europe, and the Asia Pacific.
Technology · Semiconductors · 30,800 employees
About Silicon Motion Technology
SIMO stock →Silicon Motion Technology Corporation, together with its subsidiaries, designs, develops, and markets NAND flash controllers for solid-state storage devices and related devices in China, Japan, Singapore, Taiwan, Korea, the United States, and internationally. It offers controllers for computing-grade solid state drives (SSDs), which are used in PCs and other client devices; enterprise-grade SSDs used in enterprise and hyperscale data centers; eMMC and UFS mobile embedded storage for use in smartphones and IoT devices; flash memory cards and flash drives for use in expandable storage; and specialized SSDs that are used in industrial, commercial, and automotive applications.
Technology · Semiconductors · 2,009 employees
AMKR vs SIMO FAQ
Which is bigger, Amkor Technology or Silicon Motion Technology?
Amkor Technology (AMKR) is larger, with a market capitalization of $12.99B compared with $9.69B for Silicon Motion Technology (SIMO).
Which stock has performed better over the past year, AMKR or SIMO?
SIMO returned +199.75% over the past 12 months, compared with +75.70% for AMKR (price return, excluding dividends). Past performance does not predict future results.
Which has the lower P/E ratio, AMKR or SIMO?
AMKR has the lower trailing P/E at 23.4, versus 33.4 for SIMO. A lower P/E is not by itself a sign of a better investment; it can reflect slower expected growth or higher risk.
Which pays a higher dividend, Amkor Technology or Silicon Motion Technology?
Silicon Motion Technology has the higher yield at 0.70%, compared with 0.64% for Amkor Technology.
Are Amkor Technology and Silicon Motion Technology in the same industry?
Yes. Both are classified in the Semiconductors industry within the Technology sector.