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 Silicon Motion Technology Corporation, Power Integrations 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 Silicon Motion Technology Corporation, Power Integrations and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Silicon Motion Technology Corporation, Power Integrations and Inc.

Silicon Motion Technology Corporation, together with its subsidiaries, designs, develops, and markets NAND flash controllers for solid-state storage devices and related devices in China, Japan, Singapore, Taiwan, Korea, the United States, and internationally. It offers controllers for computing-grade solid state drives (SSDs), which are used in PCs and other client devices; enterprise-grade SSDs used in enterprise and hyperscale data centers; eMMC and UFS mobile embedded storage for use in smartphones and IoT devices; flash memory cards and flash drives for use in expandable storage; and specialized SSDs that are used in industrial, commercial, and automotive applications. The company markets its controllers under the SMI brand; and single-chip SSDs under the FerriSSD, Ferri-eMMC, and Ferri-UFS brands. It markets and sells its products through direct sales personnel and independent electronics distributors to NAND flash makers, module makers, hyperscalers, and OEMs. Silicon Motion Technology Corporation was founded in 1995 and is based in Hong Kong, Hong Kong.

Power Integrations, Inc. designs, develops, manufactures, and markets analog and mixed-signal integrated circuits, and other electronic components and circuitry used in high-voltage power conversion. It provides a range of alternating current to direct current power conversion products that address power supply up to approximately 500 watts of output for consumer appliances, utility meters, LCD monitors, tablets, smartphones, computers, TVs, consumer and industrial applications, and LED lightings; and power conversion in high-power applications comprising industrial motors, solar and wind-power systems, electric locomotives, and high-voltage DC transmission systems. The company also offers InnoSwitch IC for electric vehicles; high-voltage gate-driver products used to operate high-voltage switches, such as insulated-gate bipolar transistors and silicon-carbide MOSFETs under the SCALE and SCALE-2 product-family names; and SCALE-iDriver for use in powertrain and charging applications for electric vehicles. In addition, it provides motor-driver ICs for use in refrigerator compressors, ceiling fans, air purifiers, and circulation pumps, as well as pumps and fans used in appliances, such as dishwashers, laundry machines, and boilers. The company serves communications, computer, consumer, and industrial markets. It sells its products to original equipment manufacturers and merchant power supply manufacturers through direct sales staff, as well as a network of independent sales representatives and distributors in the Americas, Europe, the Middle East, Africa, and the Asia-Pacific. Power Integrations, Inc. was incorporated in 1988 and is headquartered in San Jose, California.

Latest Semiconductors & Semiconductor Equipment and Silicon Motion Technology Corporation, Power Integrations, Inc. Stock News

As of September 2, 2026, Silicon Motion Technology Corporation had a $8.2 billion market capitalization, compared to the Semiconductors & Semiconductor Equipment median of $4.7 million. Silicon Motion Technology Corporation’s stock is NA in 2026, NA in the previous five trading days and up 203.9% in the past year.

Currently, Silicon Motion Technology Corporation’s price-earnings ratio is 28.4. Silicon Motion Technology Corporation’s trailing 12-month revenue is $1.3 billion with a 22.1% net profit margin. Year-over-year quarterly sales growth most recently was 122.8%. Analysts expect adjusted earnings to reach $11.135 per share for the current fiscal year. Silicon Motion Technology Corporation does not currently pay a dividend.

Currently, Power Integrations, Inc.’s price-earnings ratio is 114.3. Power Integrations, Inc.’s trailing 12-month revenue is $449.4 million with a 5.6% net profit margin. Year-over-year quarterly sales growth most recently was 2.6%. Analysts expect adjusted earnings to reach $1.390 per share for the current fiscal year. Power Integrations, Inc. currently has a 1.7% dividend yield.

How We Compare Silicon Motion Technology Corporation, Power Integrations 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 Silicon Motion Technology Corporation, Power Integrations and Inc.’s stock grades to see how they measure up against one another.

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Silicon Motion Technology Corporation, Power Integrations and Inc. Stock Value Grades

Company	Ticker	Value
Silicon Motion Technology Corporation	SIMO	F
Power Integrations, Inc.	POWI	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.

Silicon Motion Technology Corporation has a Value Score of 13, which is Ultra Expensive. Power Integrations, Inc. has a Value Score of 10, which is Ultra Expensive.

The Value Stock Winner: No Clear Winner

Neither Silicon Motion Technology Corporation, Power Integrations 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 Silicon Motion Technology Corporation, Power Integrations or Inc. is the better investment when it comes to value.

Silicon Motion Technology Corporation, Power Integrations and Inc. Growth Grades

Company	Ticker	Growth
Silicon Motion Technology Corporation	SIMO	A
Power Integrations, Inc.	POWI	D

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.

Silicon Motion Technology Corporation has a Growth Score of 95, which is Very Strong. Power Integrations, Inc. has a Growth Score of 25, which is Weak.

The Growth Grade Winner: Silicon Motion Technology Corporation

As you can clearly see from the Growth Grade breakdown above, Silicon Motion Technology Corporation has a more attractive growth grade than Power Integrations, Inc.. For investors who focus solely on how a company is growing relative to other companies in the same industry, Silicon Motion Technology Corporation 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.

Silicon Motion Technology Corporation, Power Integrations and Inc.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Silicon Motion Technology Corporation	SIMO	B
Power Integrations, Inc.	POWI	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.

Silicon Motion Technology Corporation has a Earnings Estimate Score of 76, which is Positive. Power Integrations, Inc. has a Earnings Estimate Score of 75, which is Positive.

The Earnings Estimate Revisions Grade Winner: It’s a Tie!

Looking at the Earnings Estimate Revisions Grade breakdown above, both Silicon Motion Technology Corporation, Power Integrations and Inc. have a grade of B. For those focusing solely on a company’s estimate revisions, other financial metrics will need to be evaluated to determine whether Silicon Motion Technology Corporation, Power Integrations or Inc. is a better fit.

Other Silicon Motion Technology Corporation, Power Integrations and Inc. Grades

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

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.

AAII’s A+ Investor Quality Grade comes from the ranking of key metrics. Specifically, the quality grade is the percentile rank of the composite 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 F-Score.

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 Silicon Motion Technology Corporation, Power Integrations and Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Silicon Motion Technology Corporation, Power Integrations or Inc. Stock?

Overall, Silicon Motion Technology Corporation stock has a Value Score of 13, Growth Score of 95 and Estimate Revisions Score of 76.

Power Integrations, Inc. stock has a Value Score of 10, Growth Score of 25 and Estimate Revisions Score of 75.

Comparing Silicon Motion Technology Corporation, Power Integrations 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.