Sifting through countless of stocks in the Electronic Equipment, Instruments & Components 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 Littelfuse, Inc., Advanced Energy Industries 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 Littelfuse, Inc., Advanced Energy Industries and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Littelfuse, Inc., Advanced Energy Industries and Inc.

Littelfuse, Inc. designs, manufactures, and sells electronic components, modules, and subassemblies. It operates through three segments: Electronics, Transportation, and Industrial. Its Electronics segment offers fuses and fuse accessories, coefficient resettable fuses, switches and interconnect solutions, polymer electrostatic discharge suppressors, varistors, reed switch based magnetic sensing, and gas discharge tubes; and discrete transient voltage suppressor diodes, TVS diode arrays, protection and switching thyristors, silicon and silicon carbide metal-oxide-semiconductor field effect transistors and diodes, and insulated gate bipolar transistors. This segment serves data center computing and communications infrastructure, industrial controls, building controls, aerospace and defense, appliances, consumer electronics solutions, healthcare solutions, industrial equipment, energy storage, diversified industrials, grid and utility infrastructure, passenger vehicles, and commercial vehicles. Its Transportation segment provides blade, resettable, high-current, and high-voltage fuses; battery cable protectors; circuit breakers, and power distribution modules; and sensor products. This segment serves heavy-duty truck and bus, construction, agriculture, off-road and recreational vehicles, material handling, passenger and commercial vehicles, and marine markets. Its Industrial segment offers industrial fuses, protection relays, contactors, transformers, residual current devices and monitors, ground fault circuit interrupters, arc fault detection devices, solid state switches, and temperature sensors for use in renewable energy and energy storage systems, electric vehicle infrastructure, HVAC systems, industrial safety, non-residential construction, MRO, mining, and factory automation applications. It sells its products through distributors, direct sales force, and manufacturers’ representatives. The company was founded in 1927 and is headquartered in Rosemont, Illinois.

Advanced Energy Industries, Inc. provides precision power conversion, measurement, and control solutions in the United States, Asia, Europe, and internationally. The company’s plasma power products offer solutions to enable innovation for semiconductor and thin film plasma processes, such as dry etch and deposition. It also provides high and low voltage power products used in a range of applications, such as semiconductor equipment, industrial production, medical and life science equipment, data centers computing, networking, and telecommunications. In addition, the company supplies sensing, controls, and instrumentation products for advanced measurement and calibration of power and temperature. Further, it provides calibration, conversions, upgrades, and refurbishments and used equipment to companies, as well as repair and maintenance services. The company offers its products through direct sales force, direct and indirect sales channels, and distributors, as well as provides warranty and non-warranty repair services. Advanced Energy Industries, Inc. was incorporated in 1981 and is headquartered in Denver, Colorado.

Latest Electronic Equipment, Instruments & Components and Littelfuse, Inc., Advanced Energy Industries, Inc. Stock News

As of September 1, 2026, Littelfuse, Inc. had a $10.4 billion market capitalization, compared to the Electronic Equipment, Instruments & Components median of $1.1 million. Littelfuse, Inc.’s stock is up 62.3% in 2026, down 2% in the previous five trading days and up 57.38% in the past year.

Currently, Littelfuse, Inc. does not have a price-earnings ratio. Littelfuse, Inc.’s trailing 12-month revenue is $2.6 billion with a -0.3% net profit margin. Year-over-year quarterly sales growth most recently was 20.4%. Analysts expect adjusted earnings to reach $17.015 per share for the current fiscal year. Littelfuse, Inc. currently has a 0.8% dividend yield.

As of September 1, 2026, Advanced Energy Industries, Inc. had a $10.7 billion market cap, putting it in the 78th percentile of all stocks. Advanced Energy Industries, Inc.’s stock is up 28.1% in 2026, down 5.3% in the previous five trading days and up 78.38% in the past year.

Currently, Advanced Energy Industries, Inc.’s price-earnings ratio is 49.3. Advanced Energy Industries, Inc.’s trailing 12-month revenue is $2.0 billion with a 10.8% net profit margin. Year-over-year quarterly sales growth most recently was 30.0%. Analysts expect adjusted earnings to reach $11.245 per share for the current fiscal year. Advanced Energy Industries, Inc. currently has a 0.1% dividend yield.

How We Compare Littelfuse, Inc., Advanced Energy Industries 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 Littelfuse, Inc., Advanced Energy Industries and Inc.’s stock grades to see how they measure up against one another.

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Littelfuse, Inc., Advanced Energy Industries and Inc. Stock Value Grades

Company	Ticker	Value
Littelfuse, Inc.	LFUS	F
Advanced Energy Industries, Inc.	AEIS	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.

Littelfuse, Inc. has a Value Score of 20, which is Ultra Expensive. Advanced Energy Industries, Inc. has a Value Score of 6, which is Ultra Expensive.

The Value Stock Winner: No Clear Winner

Neither Littelfuse, Inc., Advanced Energy Industries 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 Littelfuse, Inc., Advanced Energy Industries or Inc. is the better investment when it comes to value.

Littelfuse, Inc., Advanced Energy Industries and Inc. Growth Grades

Company	Ticker	Growth
Littelfuse, Inc.	LFUS	B
Advanced Energy Industries, Inc.	AEIS	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.

Littelfuse, Inc. has a Growth Score of 64, which is Strong. Advanced Energy Industries, Inc. has a Growth Score of 56, which is Average.

The Growth Grade Winner: Littelfuse, Inc.

As you can clearly see from the Growth Grade breakdown above, Littelfuse, Inc. has a more attractive growth grade than Advanced Energy Industries, Inc.. For investors who focus solely on how a company is growing relative to other companies in the same industry, Littelfuse, 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.

Littelfuse, Inc., Advanced Energy Industries and Inc.’s Quality Grades

Company	Ticker	Quality
Littelfuse, Inc.	LFUS	B
Advanced Energy Industries, Inc.	AEIS	C

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.

Littelfuse, Inc. has a Quality Score of 78, which is Strong. Advanced Energy Industries, Inc. has a Quality Score of 55, which is Average.

The Quality Grade Winner: Littelfuse, Inc.

As you can clearly see from the Quality Grade breakdown above, Littelfuse, Inc. has a better overall quality grade than Advanced Energy Industries, Inc.. For investors who are looking for companies with higher quality than others in the same industry, Littelfuse, 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 Littelfuse, Inc., Advanced Energy Industries and Inc. Grades

In addition to Quality, Growth and Value, 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 Littelfuse, Inc., Advanced Energy Industries and Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Littelfuse, Inc., Advanced Energy Industries or Inc. Stock?

Overall, Littelfuse, Inc. stock has a Value Score of 20, Growth Score of 64 and Quality Score of 78.

Advanced Energy Industries, Inc. stock has a Value Score of 6, Growth Score of 56 and Quality Score of 55.

Comparing Littelfuse, Inc., Advanced Energy Industries 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.