Applied Optoelectronics (AAOI) vs Rambus (RMBS)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 9, 2026.
Summary
Applied Optoelectronics (AAOI) has outperformed Rambus (RMBS) over the past year, gaining 228.7% versus a gain of 9.1%. Over five years, AAOI leads with a +1366.8% price change compared with +402.2% for RMBS. Rambus is the larger company by market cap ($11.76 billion vs $8.99 billion), about 1.3 times the size, while Applied Optoelectronics is growing revenue faster (+82.8% vs +27.1%).
On valuation, Applied Optoelectronics trades at a lower forward P/E (23.0x vs 28.8x for Rambus). Rambus converts more of its revenue into profit, with a net margin of 32.6% versus -8.4%.
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 | AAOI | RMBS |
|---|---|---|
| Share price | $105.90 | $108.47 |
| Market cap | $8.99B | $11.76B |
| 1-day change | -13.58% | -2.70% |
| YTD return | +203.79% | +18.04% |
| 1-year return | +228.68% | +9.09% |
| 5-year return | +1366.76% | +402.16% |
| P/E ratio (TTM) | — | 49.76 |
| Forward P/E | 23.01 | 28.75 |
| EPS (TTM) | $-0.75 | $2.18 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| Revenue (latest FY) | $455.71M | $707.63M |
| Revenue growth (YoY) | +82.75% | +27.13% |
| Net income (latest FY) | $-38.23M | $230.46M |
| Gross margin | 30.04% | 79.59% |
| Operating margin | -11.98% | 36.77% |
| Net margin | -8.39% | 32.57% |
| 52-week high | $233.67 | $174.10 |
| 52-week low | $18.50 | $77.89 |
| Distance from 52-week high | -54.68% | -37.70% |
| Analyst consensus | none | strong_buy |
| Avg. price target upside | +54.30% | +30.52% |
| Average volume | 9.62M | 2.41M |
| Shares outstanding | 84.91M | 108.46M |
| Employees | 4,691 | 791 |
| 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
- AAOI has outperformed RMBS by 219.6 percentage points over the past year.
- Rambus is more profitable, keeping 32.6 cents of every revenue dollar as net income versus -8.4 cents for Applied Optoelectronics.
- Applied Optoelectronics grew revenue faster in its latest fiscal year (+82.75% vs +27.13%).
About Applied Optoelectronics
AAOI stock →Applied Optoelectronics, Inc. engages in the design, manufacture, and sale of fiber-optic networking products in the United States, Taiwan, and China.
Technology · Semiconductors · 4,691 employees
About Rambus
RMBS stock →Rambus Inc. manufactures and sells semiconductor products in the United States, South Korea, Singapore, and internationally.
Technology · Semiconductors · 791 employees
AAOI vs RMBS FAQ
Which is bigger, Applied Optoelectronics or Rambus?
Rambus (RMBS) is larger, with a market capitalization of $11.76B compared with $8.99B for Applied Optoelectronics (AAOI).
Which stock has performed better over the past year, AAOI or RMBS?
AAOI returned +228.68% over the past 12 months, compared with +9.09% for RMBS (price return, excluding dividends). Past performance does not predict future results.
Are Applied Optoelectronics and Rambus in the same industry?
Yes. Both are classified in the Semiconductors industry within the Technology sector.