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 Allegro MicroSystems, Inc., First Solar 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 Allegro MicroSystems, Inc., First Solar and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Allegro MicroSystems, Inc., First Solar and Inc.

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. The company sells its products to original equipment manufacturers and distributors primarily in the automotive and industrial markets through its direct sales force, third party distributors, independent sales representatives, and consignment. The company serves automotive and industrial markets, including advanced industrial markets such as AI data centers, robotics, and energy infrastructure sectors. It operates in the United States, rest of the Americas, Europe, Japan, Greater China, South Korea, and other Asian markets. The company was founded in 1990 and is headquartered in Manchester, New Hampshire.

First Solar, Inc., a solar technology company, provides photovoltaic (PV) solar energy solutions in the United States, France, India, Chile, and internationally. The company manufactures and sells PV solar modules with thin film semiconductor technology that provides conventional crystalline silicon PV solar modules. It also designs, manufactures, and sells cadmium telluride solar modules that convert sunlight into electricity. The company serves system developers, independent power producers, utilities, commercial and industrial companies, large corporate energy buyers, and other system owners and operators. The company was formerly known as First Solar Holdings, Inc. and changed its name to First Solar, Inc. in 2006. First Solar, Inc. was founded in 1999 and is headquartered in Phoenix, Arizona.

Latest Semiconductors & Semiconductor Equipment and Allegro MicroSystems, Inc., First Solar, Inc. Stock News

As of July 31, 2026, Allegro MicroSystems, Inc. had a $7.7 billion market capitalization, compared to the Semiconductors & Semiconductor Equipment median of $4.6 million. Allegro MicroSystems, Inc.’s stock is up 57.3% in 2026, down 9.8% in the previous five trading days and up 22.53% in the past year.

Currently, Allegro MicroSystems, Inc. does not have a price-earnings ratio. Allegro MicroSystems, Inc.’s trailing 12-month revenue is $890.1 million with a 1.5% net profit margin. Year-over-year quarterly sales growth most recently was 26.1%. Analysts expect adjusted earnings to reach $1.030 per share for the current fiscal year. Allegro MicroSystems, Inc. does not currently pay a dividend.

As of July 31, 2026, First Solar, Inc. had a $22.7 billion market cap, putting it in the 87th percentile of all stocks. First Solar, Inc.’s stock is down 19.2% in 2026, up 4% in the previous five trading days and up 17.81% in the past year.

Currently, First Solar, Inc.’s price-earnings ratio is 13.0. First Solar, Inc.’s trailing 12-month revenue is $5.4 billion with a 32.5% net profit margin. Year-over-year quarterly sales growth most recently was -3.7%. Analysts expect adjusted earnings to reach $17.649 per share for the current fiscal year. First Solar, Inc. does not currently pay a dividend.

How We Compare Allegro MicroSystems, Inc., First Solar 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 Allegro MicroSystems, Inc., First Solar and Inc.’s stock grades to see how they measure up against one another.

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Allegro MicroSystems, Inc., First Solar and Inc. Growth Grades

Company	Ticker	Growth
Allegro MicroSystems, Inc.	ALGM	A
First Solar, Inc.	FSLR	A

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.

Allegro MicroSystems, Inc. has a Growth Score of 95, which is Very Strong. First Solar, Inc. has a Growth Score of 83, which is Very Strong.

The Growth Grade Winner: It’s a Tie!

Looking at the Growth Grade breakdown above, both Allegro MicroSystems, Inc., First Solar and Inc. have a grade of A. For investors who focus solely on a company’s upward growth, further research should be conducted into both companies’ other financial metrics before deciding whether to invest.

Allegro MicroSystems, Inc., First Solar and Inc.’s Quality Grades

Company	Ticker	Quality
Allegro MicroSystems, Inc.	ALGM	B
First Solar, Inc.	FSLR	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.

Allegro MicroSystems, Inc. has a Quality Score of 73, which is Strong. First Solar, Inc. has a Quality Score of 91, which is Very Strong.

The Quality Grade Winner: First Solar, Inc.

As you can clearly see from the Quality Grade breakdown above, First Solar, Inc. has a better overall quality grade than Allegro MicroSystems, Inc.. For investors who are looking for companies with higher quality than others in the same industry, First Solar, 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.

Allegro MicroSystems, Inc., First Solar and Inc.’s Momentum Grades

Company	Ticker	Momentum
Allegro MicroSystems, Inc.	ALGM	C
First Solar, Inc.	FSLR	C

Momentum grades help to 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. Momentum is based on the price change of a stock over a specified period relative to all other stocks.

Typically, AAII looks at the weighted relative strength over the trailing four quarters. The weighted four-quarter relative strength rank is the relative price change for each of the past four quarters. The most recent quarterly price change is given a weight of 40% and each of the three previous quarters are given a weighting of 20%.

Allegro MicroSystems, Inc. has a Momentum Score of 53, which is Average. First Solar, Inc. has a Momentum Score of 55, which is Average.

The Momentum Stock Winner: No Clear Winner

Neither Allegro MicroSystems, Inc., First Solar or Inc. has a strong enough Momentum Grade to be considered a “winner.” Investors 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 Allegro MicroSystems, Inc., First Solar or Inc. is the better investment when it comes to momentum.

Other Allegro MicroSystems, Inc., First Solar and Inc. Grades

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

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).

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 Allegro MicroSystems, Inc., First Solar and Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Allegro MicroSystems, Inc., First Solar or Inc. Stock?

Overall, Allegro MicroSystems, Inc. stock has a Growth Score of 95, Momentum Score of 53 and Quality Score of 73.

First Solar, Inc. stock has a Growth Score of 83, Momentum Score of 55 and Quality Score of 91.

Comparing Allegro MicroSystems, Inc., First Solar 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.