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Power IntegrationsPOWI -1.52%84 Shiller PE Ratio is 28.58 as of Sep. 09, 2026, which is 47% below its 10-year median of 54.20. GuruFocus rates POWI with a GF Score™ of 84/100 and a GF Value™ of $69.88 (Modestly Undervalued). The stock has 6 warning signs investors should review. Among 543 Semiconductors companies, Power Integrations ranks better than 64.09% on this metric.
The historical rank and industry rank for Power Integrations's Shiller PE Ratio or its related term are showing as below:
POWI'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 19.11 Med: 54.2 Max: 98.06
Current: 28.58
During the past years, Power Integrations's highest Shiller PE Ratio was 98.06. The lowest was 19.11. And the median was 54.20.
POWI's Shiller PE Ratio is ranked better than 64.09% of 543
companies
in the Semiconductors industry
Industry Median: 41.72
vs POWI: 28.58
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
Power Integrations's adjusted earnings per share data for the three months ended in Jun. 2026 was $0.170. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $1.74 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Power Integrations (NAS:POWI) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
Power Integrations Shiller PE Ratio Related Terms
Power Integrations Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Power Integrations's Shiller PE Ratio can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
POWI vs NVTS, LASR, HIMX: Shiller PE Ratio Comparison
For the Semiconductors subindustry, Power Integrations's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Power Integrations Shiller PE Ratio vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Power Integrations's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Power Integrations's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Add all the adjusted EPS together and divide 10 will get our E10.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
Power Integrations (POWI) has a Shiller PE Ratio of 28.58 as of Sep. 09, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Power Integrations and its competitors. This is 47% below median its historical median of 54.20. Over the past decade, Power Integrations' Shiller PE Ratio has ranged from 19.11 to 98.06. According to the industry distribution chart, Power Integrations ranks #195 out of 543 companies in the Semiconductors industry, placing it in the top 35.9%.
Is Power Integrations' Shiller PE Ratio too high?
Power Integrations' current Shiller PE Ratio of 28.58 is 47% below median its 10-year median of 54.20. Over the past 10 years, this metric has ranged from a low of 19.11 to a high of 98.06. The Semiconductors industry median Shiller PE Ratio is 41.72. Power Integrations' value of 28.58 is 31.5% below this industry median. Based on the distribution chart, Power Integrations ranks #195 out of 543 companies in the Semiconductors industry, which is above the industry midpoint. Overall, Power Integrations has a GF Score™ of 84/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Power Integrations' Shiller PE Ratio compare to NVTS and LASR?
According to the Semiconductors industry distribution chart, Power Integrations ranks #195 out of 543 companies for Shiller PE Ratio. This puts Power Integrations in the upper half of its industry. The industry median Shiller PE Ratio is 41.72. Power Integrations' value of 28.58 is 31.5% below this benchmark. Historically, Power Integrations' own Shiller PE Ratio has ranged from 19.11 to 98.06 over the past decade. While the company's 10-year median is 54.20 vs. the industry median of 41.72, Power Integrations has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shiller PE Ratio for a Semiconductors company?
The median Shiller PE Ratio among Semiconductors companies is 41.72, based on 543 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Power Integrations's current Shiller PE Ratio of 28.58 is 31.5% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Power Integrations and its competitors. For the Semiconductors industry, the median Shiller PE Ratio is 41.72 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Power Integrations's current Shiller PE Ratio is 28.58, which is 47% below median its own 10-year median of 54.20. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Power Integrations stock overvalued right now?
Based on GuruFocus' analysis, Power Integrations (POWI) is currently considered Modestly Undervalued. The stock's GF Value™ is $69.88, compared to a current price of $49.73 — trading 28.8% below its estimated fair value. The current Shiller PE Ratio is 28.58, which is 47% below median its 10-year median of 54.20 and 31.5% below the Semiconductors industry median of 41.72. Power Integrations' overall GF Score™ is 84/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Power Integrations (POWI), the current Shiller PE Ratio is 28.58 as of Sep. 09, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Power Integrations (POWI) Overvalued in 2026?
Based on GuruFocus' analysis, Power Integrations stock appears to be undervalued.
The current stock price of $49.73 is trading 28.8% below its estimated GF Value™ of $69.88.
GuruFocus considers Power Integrations to be Modestly Undervalued.
Key valuation signals for POWI:
Shiller PE Ratio: 28.58 (47% below median its 10-year median of 54.20)
GF Value™: $69.88 vs. price of $49.73 (28.8% below fair value)
Industry Position: 31.5% below the Semiconductors median (#195 of 543)
No single metric tells the full story. See the POWI stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Power Integrations Inc designs, develops, and markets analog and mixed-signal integrated circuits (ICs) and other electronic components and circuitry used in high-voltage power conversion. Products are used in power converters that convert electricity from a high-voltage source to the type of power required for a specified downstream use. Products are used in electronic products including mobile phones, computing and networking equipment, appliances, electronic utility meters, battery-powered tools, industrial controls, home automation, or Internet of Things applications such as networked thermostats, power strips, and security devices. Geographically, the company generates maximum revenue from China and Hong Kong.
84GF Score
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