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

About Power Integrations, Inc. and Silicon Laboratories Inc.

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.

Silicon Laboratories Inc., a fabless semiconductor company, provides mixed-signal analog intensive products in the United States, China, Taiwan, and internationally. Its products are used in various electronic products in a range of applications for the industrial Internet of Things (IoT), including connected home and security, industrial automation and control, smart metering and agriculture, smart street lighting, renewable energy, electric vehicle supply equipment, industrial wearables and equipment, commercial building automation, consumer electronics, asset tracking, and medical instrumentation; and commercial IoT applications, including smart buildings and lighting, access controls, asset tracking, electronic shelf labels, theft protection, power tools, and enterprise access points. The company’s smart home applications comprise smart home cameras, locks, gateways, residential lighting, window shades/blinds, heating, ventilation, air conditioning, switches, smoke/CO detectors, sensors, and home security panels; and connected health applications, including diabetes management, consumer health and fitness, elderly care, patient monitoring, and activity tracking, as well as provides wireless microcontrollers products. It sells its products through its direct sales force, as well as a network of independent sales representatives and distributors. The company was founded in 1996 and is headquartered in Austin, Texas.

Latest Semiconductors & Semiconductor Equipment and Power Integrations, Inc., Silicon Laboratories Inc. Stock News

As of September 4, 2026, Power Integrations, Inc. had a $2.8 billion market capitalization, compared to the Semiconductors & Semiconductor Equipment median of $4.8 million. Power Integrations, Inc.’s stock is up 42% in 2026, down 2.1% in the previous five trading days and up 12.79% in the past year.

Currently, Power Integrations, Inc.’s price-earnings ratio is 114.7. 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.

As of September 4, 2026, Silicon Laboratories Inc. had a $7.4 billion market cap, putting it in the 73rd percentile of all stocks. Silicon Laboratories Inc.’s stock is up 68.8% in 2026, up 0.9% in the previous five trading days and up 63.49% in the past year.

Currently, Silicon Laboratories Inc. does not have a price-earnings ratio. Silicon Laboratories Inc.’s trailing 12-month revenue is $855.9 million with a -4.6% net profit margin. Year-over-year quarterly sales growth most recently was 18.4%. Analysts expect adjusted earnings to reach $2.922 per share for the current fiscal year. Silicon Laboratories Inc. does not currently pay a dividend.

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

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Power Integrations, Inc. and Silicon Laboratories Inc. Stock Value Grades

Company	Ticker	Value
Power Integrations, Inc.	POWI	F
Silicon Laboratories Inc.	SLAB	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.

Power Integrations, Inc. has a Value Score of 10, which is Ultra Expensive. Silicon Laboratories Inc. has a Value Score of 11, which is Ultra Expensive.

The Value Stock Winner: No Clear Winner

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

Power Integrations, Inc. and Silicon Laboratories Inc.’s Quality Grades

Company	Ticker	Quality
Power Integrations, Inc.	POWI	A
Silicon Laboratories Inc.	SLAB	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.

Power Integrations, Inc. has a Quality Score of 81, which is Very Strong. Silicon Laboratories Inc. has a Quality Score of 79, which is Strong.

The Quality Grade Winner: Power Integrations, Inc.

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

Power Integrations, Inc. and Silicon Laboratories Inc.’s Momentum Grades

Company	Ticker	Momentum
Power Integrations, Inc.	POWI	D
Silicon Laboratories Inc.	SLAB	B

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%.

Power Integrations, Inc. has a Momentum Score of 40, which is Weak. Silicon Laboratories Inc. has a Momentum Score of 77, which is Strong.

The Momentum Grade Winner: Silicon Laboratories Inc.

As you can clearly see from the Momentum Grade breakdown above, Silicon Laboratories Inc. is considered to have stronger momentum compared to Power Integrations, Inc.. For those specifically looking for companies that have stronger momentum compared to other companies in the same industry, Silicon Laboratories Inc. could be a good stock to invest in. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other Power Integrations, Inc. and Silicon Laboratories Inc. Grades

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

Growth investing builds on the idea that stocks of companies exhibiting strong, consistent and prolonged growth outperform those of slower-growth companies. AAII measures growth through consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations.

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

So, Which Is the Better Investment, Power Integrations, Inc. or Silicon Laboratories Inc. Stock?

Overall, Power Integrations, Inc. stock has a Value Score of 10, Momentum Score of 40 and Quality Score of 81.

Silicon Laboratories Inc. stock has a Value Score of 11, Momentum Score of 77 and Quality Score of 79.

Comparing Power Integrations, Inc. and Silicon Laboratories 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.