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ISS ASISFFF 60 Shiller PE Ratio is 60.15 as of Sep. 15, 2026, which is 17% above its 10-year median of 51.31. GuruFocus rates ISFFF with a GF Score™ of 60/100 and a GF Value™ of $20.91 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 555 Business Services companies, ISS AS ranks worse than 90.27% on this metric.
As of today (2026-09-15), ISS AS's current share price is $43.31. ISS AS's E10 for the fiscal year that ended in Dec25 was $0.72. ISS AS's Shiller PE Ratio for today is 60.15.
The historical rank and industry rank for ISS AS's Shiller PE Ratio or its related term are showing as below:
ISFFF'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 23.74 Med: 51.31 Max: 4886
Current: 54.51
During the past 13 years, ISS AS's highest Shiller PE Ratio was 4886.00. The lowest was 23.74. And the median was 51.31.
ISFFF's Shiller PE Ratio is ranked worse than 90.27% of 555
companies
in the Business Services industry
Industry Median: 18.85
vs ISFFF: 54.51
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.
ISS AS's adjusted earnings per share data of for the fiscal year that ended in Dec25 was $2.414. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $0.72 for the trailing ten years ended in Dec25.
Shiller PE for Stocks: The True Measure of Stock Valuation
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.
ISS AS Shiller PE Ratio Related Terms
ISS AS Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for ISS AS'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.
ISFFF vs CTAS, CPRT, GPN: Shiller PE Ratio Comparison
For the Specialty Business Services subindustry, ISS AS'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.
ISS AS Shiller PE Ratio vs Business Services Industry
For the Business Services industry and Industrials sector, ISS AS's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where ISS AS'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.
ISS AS's Shiller PE Ratio for today is calculated as
* 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.
ISS AS's E10 for the fiscal year that ended in Dec25 is calculated as:
For example, ISS AS's adjusted earnings per share data for the fiscal year that ended in Dec25 was:
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.
ISS AS (ISFFF) has a Shiller PE Ratio of 60.15 as of Sep. 15, 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 ISS AS and its competitors. This is 17% above median its historical median of 51.31. Over the past decade, ISS AS's Shiller PE Ratio has ranged from 23.74 to 4,886.00. According to the industry distribution chart, ISS AS ranks #501 out of 555 companies in the Business Services industry, placing it in the top 90.3%.
Is ISS AS's Shiller PE Ratio too high?
ISS AS's current Shiller PE Ratio of 60.15 is 17% above median its 10-year median of 51.31. Over the past 10 years, this metric has ranged from a low of 23.74 to a high of 4,886.00. The Business Services industry median Shiller PE Ratio is 18.85. ISS AS's value of 60.15 is 219.1% above this industry median. Based on the distribution chart, ISS AS ranks #501 out of 555 companies in the Business Services industry, which is in the bottom quartile relative to peers. Overall, ISS AS has a GF Score™ of 60/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does ISS AS's Shiller PE Ratio compare to CTAS and CPRT?
According to the Business Services industry distribution chart, ISS AS ranks #501 out of 555 companies for Shiller PE Ratio. This places ISS AS in the lower half of its industry. The industry median Shiller PE Ratio is 18.85. ISS AS's value of 60.15 is 219.1% above this benchmark. Historically, ISS AS's own Shiller PE Ratio has ranged from 23.74 to 4,886.00 over the past decade. While the company's 10-year median is 51.31 vs. the industry median of 18.85, ISS AS has consistently been above 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 Business Services company?
The median Shiller PE Ratio among Business Services companies is 18.85, based on 555 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. ISS AS's current Shiller PE Ratio of 60.15 is 219.1% above 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 ISS AS and its competitors. For the Business Services industry, the median Shiller PE Ratio is 18.85 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. ISS AS's current Shiller PE Ratio is 60.15, which is 17% above median its own 10-year median of 51.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is ISS AS stock overvalued right now?
Based on GuruFocus' analysis, ISS AS (ISFFF) is currently considered Significantly Overvalued. The stock's GF Value™ is $20.91, compared to a current price of $43.31 — trading 107.1% above its estimated fair value. The current Shiller PE Ratio is 60.15, which is 17% above median its 10-year median of 51.31 and 219.1% above the Business Services industry median of 18.85. ISS AS's overall GF Score™ is 60/100 with 5 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 ISS AS (ISFFF), the current Shiller PE Ratio is 60.15 as of Sep. 15, 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 ISS AS (ISFFF) Overvalued in 2026?
Based on GuruFocus' analysis, ISS AS stock appears to be overvalued.
The current stock price of $43.31 is trading 107.1% above its estimated GF Value™ of $20.91.
GuruFocus considers ISS AS to be Significantly Overvalued.
Key valuation signals for ISFFF:
Shiller PE Ratio: 60.15 (17% above median its 10-year median of 51.31)
GF Value™: $20.91 vs. price of $43.31 (107.1% above fair value)
Industry Position: 219.1% above the Business Services median (#501 of 555)
No single metric tells the full story. See the ISFFF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
ISS AS is a provider of workplace and facility service solutions with a focus on cleaning, property, catering, support, security, and facility management. It has four segments: Financial services, Professional services, Technology, and Life sciences. Its core services offered to customers consist of cleaning, food, technical, and workplace services. Revenue is mainly generated in European end markets, with the majority earned in the United Kingdom.
60GF Score
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Shiller PE Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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