Rambus (RMBS) vs Semtech (SMTC)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.
Summary
Semtech (SMTC) has outperformed Rambus (RMBS) over the past year, gaining 173.3% versus a gain of 15.1%. Over five years, RMBS leads with a +402.2% price change compared with +151.5% for SMTC. Semtech is the larger company by market cap ($17.50 billion vs $11.76 billion), about 1.5 times the size, while Rambus is growing revenue faster (+27.1% vs +15.5%).
On valuation, Rambus trades at a lower forward P/E (29.1x vs 32.0x for Semtech). Rambus converts more of its revenue into profit, with a net margin of 32.6% versus -3.8%.
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 | RMBS | SMTC |
|---|---|---|
| Share price | $108.47 | $187.49 |
| Market cap | $11.76B | $17.50B |
| 1-day change | -2.70% | -3.25% |
| YTD return | +21.32% | +162.97% |
| 1-year return | +15.12% | +173.28% |
| 5-year return | +402.16% | +151.47% |
| P/E ratio (TTM) | 49.76 | 124.17 |
| Forward P/E | 29.15 | 32.01 |
| EPS (TTM) | $2.18 | $1.51 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| Revenue (latest FY) | $707.63M | $1.05B |
| Revenue growth (YoY) | +27.13% | +15.47% |
| Net income (latest FY) | $230.46M | $-40.38M |
| Gross margin | 79.59% | 51.63% |
| Operating margin | 36.77% | 3.10% |
| Net margin | 32.57% | -3.85% |
| 52-week high | $174.10 | $201.99 |
| 52-week low | $77.89 | $60.28 |
| Distance from 52-week high | -37.70% | -7.18% |
| Analyst consensus | strong_buy | strong_buy |
| Avg. price target upside | +30.52% | +13.32% |
| Average volume | 2.43M | 2.92M |
| Shares outstanding | 108.46M | 93.33M |
| Employees | 791 | 1,920 |
| 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
- SMTC has outperformed RMBS by 158.2 percentage points over the past year.
- Semtech trades at a higher earnings multiple (124.2x vs 49.8x trailing P/E).
- Rambus is more profitable, keeping 32.6 cents of every revenue dollar as net income versus -3.8 cents for Semtech.
- Rambus grew revenue faster in its latest fiscal year (+27.13% vs +15.47%).
About Rambus
RMBS stock →Rambus Inc. manufactures and sells semiconductor products in the United States, South Korea, Singapore, and internationally.
Technology · Semiconductors · 791 employees
About Semtech
SMTC stock →Semtech Corporation provides semiconductor, Internet of Things systems, and cloud connectivity service solutions in the Asia- Pacific, North America, and Europe. The company operates in three segments: Signal Integrity, Analog Mixed Signal and Wireless, and IoT Systems and Connectivity.
Technology · Semiconductors · 1,920 employees
RMBS vs SMTC FAQ
Which is bigger, Rambus or Semtech?
Semtech (SMTC) is larger, with a market capitalization of $17.50B compared with $11.76B for Rambus (RMBS).
Which stock has performed better over the past year, RMBS or SMTC?
SMTC returned +173.28% over the past 12 months, compared with +15.12% for RMBS (price return, excluding dividends). Past performance does not predict future results.
Which has the lower P/E ratio, RMBS or SMTC?
RMBS has the lower trailing P/E at 49.8, versus 124.2 for SMTC. A lower P/E is not by itself a sign of a better investment; it can reflect slower expected growth or higher risk.
Are Rambus and Semtech in the same industry?
Yes. Both are classified in the Semiconductors industry within the Technology sector.