Sifting through countless of stocks in the Semiconductors & Semiconductor Equipment industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Aehr Test Systems, Inc., Axcelis Technologies or Inc. because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Aehr Test Systems, Inc., Axcelis Technologies and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Aehr Test Systems, Inc., Axcelis Technologies and Inc.

Aehr Test Systems, Inc. provides test solutions for testing, burning-in, and semiconductor devices in wafer level, singulated die, package part form, and installed systems in the United States, Asia, and Europe. Its product portfolio includes FOX-XP and FOX-NP systems that are full wafer contact and singulated die/module test and burn-in systems that test, burn-in, and stabilize range of devices, including silicon carbide-based and other power semiconductors, 2D, and 3D sensors used in mobile phones, tablets and other computing devices, memory semiconductors, processors, microcontrollers, systems-on-a-chip, and photonics and integrated optical devices. The company offers FOX-CP system, a low-cost single-wafer compact test solution for logic, memory, and photonic devices; and FOX WaferPak Contactor, a full wafer contactor capable of testing wafers up to 300mm that enables integrated circuit manufacturers to perform test, burn-in, and stabilization of full wafers on the FOX-P systems. In addition, it provides FOX DiePak Carrier, which allows testing, burning in, and stabilization of singulated bare die and modules; and FOX DiePak Loader. The company was incorporated in 1977 and is headquartered in Fremont, California.

Axcelis Technologies, Inc. designs, manufactures, and services ion implantation and other processing equipment used in the fabrication of semiconductor chips in the United States, Europe, and the Asia Pacific. The company provides high energy, high current, and medium current implanters for various application requirements. It also offers aftermarket lifecycle products and services, including used tools, spare parts, equipment upgrades, maintenance services, and customer training. The company sells its equipment and services to semiconductor chip manufacturers through its direct sales force. Axcelis Technologies, Inc. was founded in 1978 and is headquartered in Beverly, Massachusetts.

Latest Semiconductors & Semiconductor Equipment and Aehr Test Systems, Inc., Axcelis Technologies, Inc. Stock News

As of June 12, 2026, Aehr Test Systems, Inc. had a $3.4 billion market capitalization, compared to the Semiconductors & Semiconductor Equipment median of $5.8 million. Aehr Test Systems, Inc.’s stock is up 437.2% in 2026, up 10.2% in the previous five trading days and up 831.87% in the past year.

Currently, Aehr Test Systems, Inc. does not have a price-earnings ratio. Aehr Test Systems, Inc.’s trailing 12-month revenue is $45.3 million with a -25.2% net profit margin. Year-over-year quarterly sales growth most recently was -43.7%. Analysts expect adjusted earnings to reach $-0.095 per share for the current fiscal year. Aehr Test Systems, Inc. does not currently pay a dividend.

As of June 12, 2026, Axcelis Technologies, Inc. had a $5.5 billion market cap, putting it in the 69th percentile of all stocks. Axcelis Technologies, Inc.’s stock is up 124.2% in 2026, up 22.4% in the previous five trading days and up 165.16% in the past year.

Currently, Axcelis Technologies, Inc.’s price-earnings ratio is 55.8. Axcelis Technologies, Inc.’s trailing 12-month revenue is $845.4 million with a 11.9% net profit margin. Year-over-year quarterly sales growth most recently was 3.3%. Analysts expect adjusted earnings to reach $3.834 per share for the current fiscal year. Axcelis Technologies, Inc. does not currently pay a dividend.

How We Compare Aehr Test Systems, Inc., Axcelis Technologies and Inc. Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Aehr Test Systems, Inc., Axcelis Technologies and Inc.’s stock grades to see how they measure up against one another.

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Aehr Test Systems, Inc., Axcelis Technologies and Inc. Growth Grades

Company	Ticker	Growth
Aehr Test Systems, Inc.	AEHR	F
Axcelis Technologies, Inc.	ACLS	B

The foundation of growth investing is seeking out stocks of companies exhibiting strong, consistent and prolonged growth that is expected to continue into the future.

In order to compute the growth score and assign it a letter grade, the percentile ranks for each of three components‐consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations‐must be determined. These three rank figures are added together, and the sum is ranked against the entire stock universe to arrive at a company’s Growth Score to create an equal distribution of grades.

The companies in the bottom 20% of the stock universe receive Growth Grades of F, considered to be very weak, while those in the top 20% receive A grades, which are considered very strong.

Aehr Test Systems, Inc. has a Growth Score of 16, which is Very Weak. Axcelis Technologies, Inc. has a Growth Score of 64, which is Strong.

The Growth Grade Winner: Axcelis Technologies, Inc.

As you can clearly see from the Growth Grade breakdown above, Axcelis Technologies, Inc. has a more attractive growth grade than Aehr Test Systems, Inc.. For investors who focus solely on how a company is growing relative to other companies in the same industry, Axcelis Technologies, Inc. could be a good stock to add to their portfolio. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Aehr Test Systems, Inc., Axcelis Technologies and Inc.’s Quality Grades

Company	Ticker	Quality
Aehr Test Systems, Inc.	AEHR	D
Axcelis Technologies, Inc.	ACLS	B

Like the Value Grade, AAII’s A+ Investor Quality Grade comes from the percentile rank of key metrics. Specifically, the Quality Score is the percentile rank of the average of the percentile ranks of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and the F-Score.

The score is variable, meaning it can consider all eight measures or, should any of the eight measures not be valid, the remaining measures that are valid. To be assigned a Quality Score, stocks must have a valid (non-null) measure and corresponding ranking for at least four of the eight quality measures.

The Quality Score is used to assess the underlying “quality” of a particular stock. A higher-quality stock possesses traits associated with upside potential and reduced downside risk. Backtesting of the Quality Grade shows that stocks with higher grades, on average, outperformed stocks with lower grades over the period of 1998 through 2019.

Stocks receive better grades (higher scores) for having higher scores for the quality subcomponents and worse grades (lower scores) for lower scores for the subcomponents.

Aehr Test Systems, Inc. has a Quality Score of 40, which is Weak. Axcelis Technologies, Inc. has a Quality Score of 74, which is Strong.

The Quality Grade Winner: Axcelis Technologies, Inc.

As you can clearly see from the Quality Grade breakdown above, Axcelis Technologies, Inc. has a better overall quality grade than Aehr Test Systems, Inc.. For investors who are looking for companies with higher quality than others in the same industry, Axcelis Technologies, Inc. could be a good stock to add to their portfolios. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Aehr Test Systems, Inc., Axcelis Technologies and Inc.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Aehr Test Systems, Inc.	AEHR	C
Axcelis Technologies, Inc.	ACLS	B

Earnings estimate revisions scores consider the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, positive surprises beget further positive surprises‐or at least continued sales growth (the exact opposite is generally true, too).

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

Aehr Test Systems, Inc. has a Earnings Estimate Score of 50, which is Neutral. Axcelis Technologies, Inc. has a Earnings Estimate Score of 66, which is Positive.

The Earnings Estimate Revisions Grade Winner: Axcelis Technologies, Inc.

As you can clearly see from the Earnings Estimate Revisions Grade breakdown above, Axcelis Technologies, Inc. has a better Earnings Estimate Revisions Grade than Aehr Test Systems, Inc.. For those who are specifically looking for companies with better short-term prospects when compared to other companies in the same industry, Axcelis Technologies, Inc. could be a good stock to invest in. However, it’s important to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other Aehr Test Systems, Inc., Axcelis Technologies and Inc. Grades

In addition to Growth, Estimate Revisions and Quality, A+ Investor also provides grades for Value and Momentum.

Momentum grades help uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming.

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection. Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Aehr Test Systems, Inc., Axcelis Technologies and Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Aehr Test Systems, Inc., Axcelis Technologies or Inc. Stock?

Overall, Aehr Test Systems, Inc. stock has a Growth Score of 16, Estimate Revisions Score of 50 and Quality Score of 40.

Axcelis Technologies, Inc. stock has a Growth Score of 64, Estimate Revisions Score of 66 and Quality Score of 74.

Comparing Aehr Test Systems, Inc., Axcelis Technologies and Inc.’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.