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., FormFactor 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., FormFactor and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Aehr Test Systems, Inc., FormFactor 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.

FormFactor, Inc. designs, manufactures, and sells probe cards, analytical probes, probe stations, thermal systems, cryogenic systems, and related services in the United States, South Korea, Taiwan, China, Japan, Singapore, Europe, Malaysia, and internationally. The company operates in two segments: Probe Cards and Systems segments. The company provides probe cards to test various semiconductor device types, including systems- on-chip products, such as graphics, central, digital processing units, and other custom application-specific processing units; mobile application processors, microprocessors, and microcontrollers; network devices, which include switches and network processing units; dynamic random-access memory; radio-frequency amplifiers and filters; antenna-in-package devices; analog and mixed-signal integrated circuits; image sensors; co-packaged optical integrated circuits; NAND flash memory; NOR flash memory; and quantum computer processor devices. It also offers analytical probes, which are used for device characterization, electrical simulation model development, failure analysis, and prototype design debugging; probe stations, a critical tool for the development of new generations of semiconductor and electro-optical processes and designs; and thermal subsystems, which include thermal chucks and other test systems used in probe stations and other applications for precise temperature management. In addition, the company provides cryogenic systems, which includes the manufacture of precision cryogenic instruments and semiconductor test and measurement systems; and services and support, including installation services. Further, it offers on-site probe card maintenance and service training, seminars, and telephone support services. It markets and sells its products through direct sales force, manufacturers’ representatives, and distributors. The company was incorporated in 1993 and is headquartered in Livermore, California.

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

As of May 21, 2026, Aehr Test Systems, Inc. had a $2.9 billion market capitalization, compared to the Semiconductors & Semiconductor Equipment median of $5.2 million. Aehr Test Systems, Inc.’s stock is up 352.2% in 2026, down 14.1% in the previous five trading days and up 921.25% 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 May 21, 2026, FormFactor, Inc. had a $10.0 billion market cap, putting it in the 78th percentile of all stocks. FormFactor, Inc.’s stock is up 129.5% in 2026, NA 0% in the previous five trading days and up 301.13% in the past year.

Currently, FormFactor, Inc.’s price-earnings ratio is 147.1. FormFactor, Inc.’s trailing 12-month revenue is $839.8 million with a 8.1% net profit margin. Year-over-year quarterly sales growth most recently was 31.9%. Analysts expect adjusted earnings to reach $2.437 per share for the current fiscal year. FormFactor, Inc. does not currently pay a dividend.

How We Compare Aehr Test Systems, Inc., FormFactor 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., FormFactor and Inc.’s stock grades to see how they measure up against one another.

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Aehr Test Systems, Inc., FormFactor and Inc. Stock Value Grades

Company	Ticker	Value
Aehr Test Systems, Inc.	AEHR	F
FormFactor, Inc.	FORM	F

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.

AAII’s A+ Investor Value Grade derives from a stock’s value score. The Value Score is the percentile rank of the average of the percentile ranks of the price-to-sales ratio, price-earnings ratio, enterprise-value-to-EBITDA (EV/EBITDA) ratio, shareholder yield, price-to-book-value ratio and price-to-free-cash-flow ratio. The score is variable, meaning it can consider all six ratios or, should any of the six ratios not be valid, the remaining ratios that are valid. To be assigned a Value Score, stocks must have a valid (non-null) ratio and corresponding ranking for at least two of the six valuation ratios.

Stocks with a Value Score from 81 to 100 are considered deep value, those with a score between 61 and 80 are a good value and so on.

Aehr Test Systems, Inc. has a Value Score of 4, which is Ultra Expensive. FormFactor, Inc. has a Value Score of 3, which is Ultra Expensive.

The Value Stock Winner: No Clear Winner

Neither Aehr Test Systems, Inc., FormFactor or Inc. has a high enough value grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolio. It’s important to look at a wide range of financial metrics in order to determine if Aehr Test Systems, Inc., FormFactor or Inc. is the better investment when it comes to value.

Aehr Test Systems, Inc., FormFactor and Inc. Growth Grades

Company	Ticker	Growth
Aehr Test Systems, Inc.	AEHR	F
FormFactor, Inc.	FORM	C

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. FormFactor, Inc. has a Growth Score of 56, which is Average.

The Growth Stock Winner: No Clear Winner

Neither Aehr Test Systems, Inc., FormFactor or Inc. has a high enough Growth Grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Aehr Test Systems, Inc., FormFactor or Inc. is the better investment when it comes to sustainable growth.

Aehr Test Systems, Inc., FormFactor and Inc.’s Quality Grades

Company	Ticker	Quality
Aehr Test Systems, Inc.	AEHR	D
FormFactor, Inc.	FORM	A

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 39, which is Weak. FormFactor, Inc. has a Quality Score of 90, which is Very Strong.

The Quality Grade Winner: FormFactor, Inc.

As you can clearly see from the Quality Grade breakdown above, FormFactor, 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, FormFactor, 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.

Other Aehr Test Systems, Inc., FormFactor and Inc. Grades

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

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.

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

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., FormFactor 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., FormFactor or Inc. Stock?

Overall, Aehr Test Systems, Inc. stock has a Value Score of 4, Growth Score of 16 and Quality Score of 39.

FormFactor, Inc. stock has a Value Score of 3, Growth Score of 56 and Quality Score of 90.

Comparing Aehr Test Systems, Inc., FormFactor 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.