Allegro MicroSystems (ALGM) vs Enphase Energy (ENPH)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.
Summary
Allegro MicroSystems (ALGM) has outperformed Enphase Energy (ENPH) over the past year, gaining 34.7% versus a loss of 7.6%. Over five years, ALGM leads with a +18.1% price change compared with -80.6% for ENPH. Allegro MicroSystems is the larger company by market cap ($6.90 billion vs $4.43 billion), about 1.6 times the size.
On valuation, Enphase Energy trades at a lower forward P/E (15.3x vs 25.0x for Allegro MicroSystems). Enphase Energy converts more of its revenue into profit, with a net margin of 11.7% versus -1.7%.
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 | ENPH |
|---|---|---|
| Share price | $37.03 | $33.50 |
| Market cap | $6.90B | $4.43B |
| 1-day change | -4.46% | -1.21% |
| YTD return | +40.37% | +4.52% |
| 1-year return | +34.65% | -7.64% |
| 5-year return | +18.12% | -80.63% |
| P/E ratio (TTM) | 617.17 | 33.50 |
| Forward P/E | 25.04 | 15.29 |
| EPS (TTM) | $0.06 | $1.00 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| Revenue (latest FY) | $890.10M | $1.47B |
| Revenue growth (YoY) | +22.77% | +10.72% |
| Net income (latest FY) | $-14.90M | $172.13M |
| Gross margin | 46.28% | 46.64% |
| Operating margin | 2.08% | 10.69% |
| Net margin | -1.67% | 11.69% |
| 52-week high | $71.77 | $73.74 |
| 52-week low | $22.41 | $25.78 |
| Distance from 52-week high | -48.40% | -54.57% |
| Analyst consensus | strong_buy | buy |
| Avg. price target upside | +46.96% | +53.31% |
| Average volume | 2.37M | 4.41M |
| Shares outstanding | 186.40M | 132.14M |
| Employees | 4,250 | 2,872 |
| 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
- ALGM has outperformed ENPH by 42.3 percentage points over the past year.
- Allegro MicroSystems trades at a higher earnings multiple (617.2x vs 33.5x trailing P/E).
- Enphase Energy is more profitable, keeping 11.7 cents of every revenue dollar as net income versus -1.7 cents for Allegro MicroSystems.
- Allegro MicroSystems grew revenue faster in its latest fiscal year (+22.77% vs +10.72%).
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 Enphase Energy
ENPH stock →Enphase Energy, Inc., together with its subsidiaries, designs, develops, manufactures, and sells home energy solutions for the solar photovoltaic industry in the United States and internationally. The company offers semiconductor-based microinverter that converts energy at the individual solar module level and combines with its proprietary networking and software technologies to provide energy monitoring and control.
Technology · Semiconductors · 2,872 employees
ALGM vs ENPH FAQ
Which is bigger, Allegro MicroSystems or Enphase Energy?
Allegro MicroSystems (ALGM) is larger, with a market capitalization of $6.90B compared with $4.43B for Enphase Energy (ENPH).
Which stock has performed better over the past year, ALGM or ENPH?
ALGM returned +34.65% over the past 12 months, compared with -7.64% for ENPH (price return, excluding dividends). Past performance does not predict future results.
Which has the lower P/E ratio, ALGM or ENPH?
ENPH has the lower trailing P/E at 33.5, versus 617.2 for ALGM. A lower P/E is not by itself a sign of a better investment; it can reflect slower expected growth or higher risk.
Are Allegro MicroSystems and Enphase Energy in the same industry?
Yes. Both are classified in the Semiconductors industry within the Technology sector.