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Alpha & Omega SemiconductorAOSL +3.13%68 Shiller PE Ratio is 13.78 as of Sep. 07, 2026, which is 27% below its 10-year median of 18.98. GuruFocus rates AOSL with a GF Score™ of 68/100 and a GF Value™ of $27.08 (Fairly Valued). The stock has 3 warning signs investors should review. Among 543 Semiconductors companies, Alpha & Omega Semiconductor ranks better than 85.27% on this metric.
The historical rank and industry rank for Alpha & Omega Semiconductor's Shiller PE Ratio or its related term are showing as below:
AOSL'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 8.22 Med: 18.98 Max: 168.21
Current: 13.78
During the past years, Alpha & Omega Semiconductor's highest Shiller PE Ratio was 168.21. The lowest was 8.22. And the median was 18.98.
AOSL's Shiller PE Ratio is ranked better than 85.27% of 543
companies
in the Semiconductors industry
Industry Median: 41.31
vs AOSL: 13.78
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.
Alpha & Omega Semiconductor's adjusted earnings per share data for the three months ended in Jun. 2026 was $-0.430. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $1.83 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Alpha & Omega Semiconductor (NAS:AOSL) 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.
Alpha & Omega Semiconductor Shiller PE Ratio Related Terms
Alpha & Omega Semiconductor Shiller PE Ratio Historical Data
* 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.
Alpha & Omega Semiconductor Shiller PE Ratio Chart
AOSL vs CEVA, INDI, LAES: Shiller PE Ratio Comparison
For the Semiconductors subindustry, Alpha & Omega Semiconductor'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.
Alpha & Omega Semiconductor Shiller PE Ratio vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Alpha & Omega Semiconductor's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Alpha & Omega Semiconductor's Shiller PE Ratio falls into.
Alpha & Omega Semiconductor Shiller PE Ratio Calculation
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.
Alpha & Omega Semiconductor (AOSL) has a Shiller PE Ratio of 13.78 as of Sep. 07, 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 Alpha & Omega Semiconductor and its competitors. This is 27% below median its historical median of 18.98. Over the past decade, Alpha & Omega Semiconductor's Shiller PE Ratio has ranged from 8.22 to 168.21. According to the industry distribution chart, Alpha & Omega Semiconductor ranks #80 out of 543 companies in the Semiconductors industry, placing it in the top 14.7%.
Is Alpha & Omega Semiconductor's Shiller PE Ratio too high?
Alpha & Omega Semiconductor's current Shiller PE Ratio of 13.78 is 27% below median its 10-year median of 18.98. Over the past 10 years, this metric has ranged from a low of 8.22 to a high of 168.21. The Semiconductors industry median Shiller PE Ratio is 41.31. Alpha & Omega Semiconductor's value of 13.78 is 66.6% below this industry median. Based on the distribution chart, Alpha & Omega Semiconductor ranks #80 out of 543 companies in the Semiconductors industry, which is in the top quartile — a strong position relative to peers. Overall, Alpha & Omega Semiconductor has a GF Score™ of 68/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Alpha & Omega Semiconductor's Shiller PE Ratio compare to CEVA and INDI?
According to the Semiconductors industry distribution chart, Alpha & Omega Semiconductor ranks #80 out of 543 companies for Shiller PE Ratio. This places Alpha & Omega Semiconductor in the top 15% of its industry — outperforming the majority of peers. The industry median Shiller PE Ratio is 41.31. Alpha & Omega Semiconductor's value of 13.78 is 66.6% below this benchmark. Historically, Alpha & Omega Semiconductor's own Shiller PE Ratio has ranged from 8.22 to 168.21 over the past decade. While the company's 10-year median is 18.98 vs. the industry median of 41.31, Alpha & Omega Semiconductor 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 41.31, 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. Alpha & Omega Semiconductor's current Shiller PE Ratio of 13.78 is 66.6% 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 Alpha & Omega Semiconductor and its competitors. For the Semiconductors industry, the median Shiller PE Ratio is 41.31 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Alpha & Omega Semiconductor's current Shiller PE Ratio is 13.78, which is 27% below median its own 10-year median of 18.98. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Alpha & Omega Semiconductor stock overvalued right now?
Based on GuruFocus' analysis, Alpha & Omega Semiconductor (AOSL) is currently considered Fairly Valued. The stock's GF Value™ is $27.08, compared to a current price of $25.22 — trading 6.9% below its estimated fair value. The current Shiller PE Ratio is 13.78, which is 27% below median its 10-year median of 18.98 and 66.6% below the Semiconductors industry median of 41.31. Alpha & Omega Semiconductor's overall GF Score™ is 68/100 with 3 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 Alpha & Omega Semiconductor (AOSL), the current Shiller PE Ratio is 13.78 as of Sep. 07, 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 Alpha & Omega Semiconductor (AOSL) Overvalued in 2026?
Based on GuruFocus' analysis, Alpha & Omega Semiconductor stock appears to be undervalued.
The current stock price of $25.22 is trading 6.9% below its estimated GF Value™ of $27.08.
GuruFocus considers Alpha & Omega Semiconductor to be Fairly Valued.
Key valuation signals for AOSL:
Shiller PE Ratio: 13.78 (27% below median its 10-year median of 18.98)
GF Value™: $27.08 vs. price of $25.22 (6.9% below fair value)
Industry Position: 66.6% below the Semiconductors median (#80 of 543)
No single metric tells the full story. See the AOSL stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Alpha & Omega Semiconductor Ltd designs, develops and supplies a portfolio of power semiconductors targeting various applications, including personal computers, flat-panel TVs, LED lighting, smartphones, battery packs, consumer and industrial motor controls and power supplies for TVs, computers, servers and telecommunications equipment. It generates revenue mainly from the sale of power semiconductors, consisting of power discretes and power ICs with a presence in Hong Kong, China, South Korea, the United States and other countries. It operates in one operating segment: the design, development and supply of power semiconductor products for computing, consumer electronics, communication and industrial applications.
68GF Score
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