Allegro MicroSystems (ALGM) vs Silicon Laboratories (SLAB)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 7, 2026.
Summary
Silicon Laboratories (SLAB) has outperformed Allegro MicroSystems (ALGM) over the past year, gaining 68.5% versus a gain of 34.7%. Over five years, SLAB leads with a +51.3% price change compared with +18.1% for ALGM. Silicon Laboratories is the larger company by market cap ($7.41 billion vs $6.90 billion), about 1.1 times the size.
On valuation, Allegro MicroSystems trades at a lower forward P/E (25.0x vs 50.9x for Silicon Laboratories). Allegro MicroSystems converts more of its revenue into profit, with a net margin of -1.7% versus -8.3%.
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 | ALGM | SLAB |
|---|---|---|
| Share price | $37.03 | $221.95 |
| Market cap | $6.90B | $7.41B |
| 1-day change | -4.46% | -0.30% |
| YTD return | +40.37% | +69.81% |
| 1-year return | +34.65% | +68.54% |
| 5-year return | +18.12% | +51.30% |
| P/E ratio (TTM) | 617.17 | — |
| Forward P/E | 25.04 | 50.89 |
| EPS (TTM) | $0.06 | $-1.17 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| Revenue (latest FY) | $890.10M | $784.76M |
| Revenue growth (YoY) | +22.77% | +34.29% |
| Net income (latest FY) | $-14.90M | $-64.91M |
| Gross margin | 46.28% | 58.23% |
| Operating margin | 2.08% | -8.99% |
| Net margin | -1.67% | -8.27% |
| 52-week high | $71.77 | $223.50 |
| 52-week low | $22.41 | $115.51 |
| Distance from 52-week high | -48.40% | -0.70% |
| Analyst consensus | strong_buy | hold |
| Avg. price target upside | +46.96% | +0.41% |
| Average volume | 2.39M | 286.33K |
| Shares outstanding | 186.40M | 33.37M |
| Employees | 4,250 | 1,930 |
| 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
- SLAB has outperformed ALGM by 33.9 percentage points over the past year.
- Allegro MicroSystems is more profitable, keeping -1.7 cents of every revenue dollar as net income versus -8.3 cents for Silicon Laboratories.
- Silicon Laboratories grew revenue faster in its latest fiscal year (+34.29% vs +22.77%).
About Allegro MicroSystems
ALGM stock →Allegro MicroSystems, Inc., together with its subsidiaries, designs, develops, manufactures, and markets sensor integrated circuits (ICs) and application-specific power ICs for sensing, motion control, and power management functions of complex electromechanical or power conversion systems. Its products include magnetic sensor ICs, such as position, speed, and electric current sensor ICs; and power ICs comprising motor driver ICs, such as regulator, power management ICs, and LED driver ICs, and isolated gate drivers.
Technology · Semiconductors · 4,250 employees
About Silicon Laboratories
SLAB stock →Silicon Laboratories Inc., a fabless semiconductor company, provides mixed-signal analog intensive products in the United States, China, Taiwan, and internationally. Its products are used in various electronic products in a range of applications for the industrial Internet of Things (IoT), including connected home and security, industrial automation and control, smart metering and agriculture, smart street lighting, renewable energy, electric vehicle supply equipment, industrial wearables and equipment, commercial building automation, consumer electronics, asset tracking, and medical instrumentation; and commercial IoT applications, including smart buildings and lighting, access controls, asset tracking, electronic shelf labels, theft protection, power tools, and enterprise access points.
Technology · Semiconductors · 1,930 employees
ALGM vs SLAB FAQ
Which is bigger, Allegro MicroSystems or Silicon Laboratories?
Silicon Laboratories (SLAB) is larger, with a market capitalization of $7.41B compared with $6.90B for Allegro MicroSystems (ALGM).
Which stock has performed better over the past year, ALGM or SLAB?
SLAB returned +68.54% over the past 12 months, compared with +34.65% for ALGM (price return, excluding dividends). Past performance does not predict future results.
Are Allegro MicroSystems and Silicon Laboratories in the same industry?
Yes. Both are classified in the Semiconductors industry within the Technology sector.