Acorn Energy (ACFN) vs Sono-Tek (SOTK)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 9, 2026.
Summary
Sono-Tek (SOTK) has outperformed Acorn Energy (ACFN) over the past year, gaining 53.6% versus a loss of 30.5%. Over five years, ACFN leads with a +88.6% price change compared with +16.0% for SOTK. Sono-Tek is the larger company by market cap ($111.3 million vs $47.4 million), about 2.3 times the size.
On valuation, Acorn Energy trades at a lower trailing P/E (30.6x vs 54.5x for Sono-Tek).
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 | ACFN | SOTK |
|---|---|---|
| Share price | $18.69 | $7.08 |
| Market cap | $47.37M | $111.27M |
| 1-day change | -1.68% | +3.81% |
| YTD return | +25.89% | +65.13% |
| 1-year return | -30.47% | +53.60% |
| 5-year return | +88.59% | +15.99% |
| P/E ratio (TTM) | 30.64 | 54.46 |
| Forward P/E | — | 52.44 |
| EPS (TTM) | $0.61 | $0.13 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| 52-week high | $27.50 | $7.48 |
| 52-week low | $12.42 | $3.40 |
| Distance from 52-week high | -32.04% | -5.35% |
| Analyst consensus | — | buy |
| Avg. price target upside | — | +20.06% |
| Average volume | 49.31K | 68.25K |
| Shares outstanding | 2.53M | 15.72M |
| Employees | 26 | 79 |
| Sector | Consumer Discretionary | Technology |
| Industry | Military/Government/Technical | Industrial Machinery/Components |
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
- Sono-Tek is about 2.3 times larger than Acorn Energy by market value ($111.27M vs $47.37M).
- SOTK has outperformed ACFN by 84.1 percentage points over the past year.
- Sono-Tek trades at a higher earnings multiple (54.5x vs 30.6x trailing P/E).
- The two companies sit in different sectors: Acorn Energy in Consumer Discretionary and Sono-Tek in Technology.
About Acorn Energy
ACFN stock →Acorn Energy, Inc., through its subsidiary, develops and markets wireless remote monitoring and control systems in the United States and internationally. It operates through two segments: Power Generation (PG) and Cathodic Protection (CP).
Consumer Discretionary · Military/Government/Technical · 26 employees
About Sono-Tek
SOTK stock →Sono-Tek Corporation designs and manufactures ultrasonic coating systems for applying on parts and components for the microelectronics/electronics, alternative energy, medical, industrial, and research and development/other markets. The company offers custom-engineered ultrasonic coating systems and nozzles and generators.
Technology · Industrial Machinery/Components · 79 employees
ACFN vs SOTK FAQ
Which is bigger, Acorn Energy or Sono-Tek?
Sono-Tek (SOTK) is larger, with a market capitalization of $111.27M compared with $47.37M for Acorn Energy (ACFN).
Which stock has performed better over the past year, ACFN or SOTK?
SOTK returned +53.60% over the past 12 months, compared with -30.47% for ACFN (price return, excluding dividends). Past performance does not predict future results.
Which has the lower P/E ratio, ACFN or SOTK?
ACFN has the lower trailing P/E at 30.6, versus 54.5 for SOTK. A lower P/E is not by itself a sign of a better investment; it can reflect slower expected growth or higher risk.
Are Acorn Energy and Sono-Tek in the same industry?
No. Acorn Energy is in the Consumer Discretionary sector, while Sono-Tek is in Technology.