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Axcelis TechnologiesACLS -5.24%89 Shiller PE Ratio is 35.29 as of Jul. 26, 2026, which is 33% below its 10-year median of 52.98. GuruFocus rates ACLS with a GF Score™ of 89/100 and a GF Value™ of $87.59 (Significantly Overvalued). The stock has 4 warning signs investors should review. Among 548 Semiconductors companies, Axcelis Technologies ranks better than 56.39% on this metric.
The historical rank and industry rank for Axcelis Technologies's Shiller PE Ratio or its related term are showing as below:
ACLS'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 12.37 Med: 52.98 Max: 199.64
Current: 35.29
During the past years, Axcelis Technologies's highest Shiller PE Ratio was 199.64. The lowest was 12.37. And the median was 52.98.
ACLS's Shiller PE Ratio is ranked better than 56.39% of 548
companies
in the Semiconductors industry
Industry Median: 42.37
vs ACLS: 35.29
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.
Axcelis Technologies's adjusted earnings per share data for the three months ended in Mar. 2026 was $0.300. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $3.80 for the trailing ten years ended in Mar. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Axcelis Technologies (NAS:ACLS) 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.
Axcelis Technologies Shiller PE Ratio Related Terms
Axcelis Technologies Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Axcelis Technologies'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.
ACLS vs UCTT, AXTI, IPGP: Shiller PE Ratio Comparison
For the Semiconductor Equipment & Materials subindustry, Axcelis Technologies'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.
Axcelis Technologies Shiller PE Ratio vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Axcelis Technologies's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Axcelis Technologies'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.
Axcelis Technologies (ACLS) has a Shiller PE Ratio of 35.29 as of Jul. 26, 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 Axcelis Technologies and its competitors. This is 33% below median its historical median of 52.98. Over the past decade, Axcelis Technologies' Shiller PE Ratio has ranged from 12.37 to 199.64. According to the industry distribution chart, Axcelis Technologies ranks #239 out of 548 companies in the Semiconductors industry, placing it in the top 43.6%.
Is Axcelis Technologies' Shiller PE Ratio too high?
Axcelis Technologies' current Shiller PE Ratio of 35.29 is 33% below median its 10-year median of 52.98. Over the past 10 years, this metric has ranged from a low of 12.37 to a high of 199.64. The Semiconductors industry median Shiller PE Ratio is 42.37. Axcelis Technologies' value of 35.29 is 16.7% below this industry median. Based on the distribution chart, Axcelis Technologies ranks #239 out of 548 companies in the Semiconductors industry, which is above the industry midpoint. Overall, Axcelis Technologies has a GF Score™ of 89/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Axcelis Technologies' Shiller PE Ratio compare to UCTT and AXTI?
According to the Semiconductors industry distribution chart, Axcelis Technologies ranks #239 out of 548 companies for Shiller PE Ratio. This puts Axcelis Technologies in the upper half of its industry. The industry median Shiller PE Ratio is 42.37. Axcelis Technologies' value of 35.29 is 16.7% below this benchmark. Historically, Axcelis Technologies' own Shiller PE Ratio has ranged from 12.37 to 199.64 over the past decade. While the company's 10-year median is 52.98 vs. the industry median of 42.37, Axcelis Technologies 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 42.37, based on 548 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. Axcelis Technologies's current Shiller PE Ratio of 35.29 is 16.7% 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 Axcelis Technologies and its competitors. For the Semiconductors industry, the median Shiller PE Ratio is 42.37 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Axcelis Technologies's current Shiller PE Ratio is 35.29, which is 33% below median its own 10-year median of 52.98. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Axcelis Technologies stock overvalued right now?
Based on GuruFocus' analysis, Axcelis Technologies (ACLS) is currently considered Significantly Overvalued. The stock's GF Value™ is $87.59, compared to a current price of $134.10 — trading 53.1% above its estimated fair value. The current Shiller PE Ratio is 35.29, which is 33% below median its 10-year median of 52.98 and 16.7% below the Semiconductors industry median of 42.37. Axcelis Technologies' overall GF Score™ is 89/100 with 4 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 Axcelis Technologies (ACLS), the current Shiller PE Ratio is 35.29 as of Jul. 26, 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 Axcelis Technologies (ACLS) Overvalued in 2026?
Based on GuruFocus' analysis, Axcelis Technologies stock appears to be overvalued.
The current stock price of $134.10 is trading 53.1% above its estimated GF Value™ of $87.59.
GuruFocus considers Axcelis Technologies to be Significantly Overvalued.
Key valuation signals for ACLS:
Shiller PE Ratio: 35.29 (33% below median its 10-year median of 52.98)
GF Value™: $87.59 vs. price of $134.10 (53.1% above fair value)
Industry Position: 16.7% below the Semiconductors median (#239 of 548)
No single metric tells the full story. See the ACLS stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Axcelis Technologies Inc designs, manufactures, and services ion implantation and other processing equipment used in the fabrication of semiconductor chips. In addition to equipment, the company provides aftermarket lifecycle products and services, including used tools, spare parts, equipment upgrades, maintenance services, and customer training. Geographically, the group has a business presence in North America, Asia Pacific, and Europe, of which key revenue is derived from the Asia Pacific.
89GF Score
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