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Rational AGRTLLF 92 Shiller PE Ratio is 35.30 as of Sep. 17, 2026, which is 34% below its 10-year median of 53.37. GuruFocus rates RTLLF with a GF Score™ of 92/100 and a GF Value™ of $910.93 (Modestly Undervalued). The stock has 1 warning sign investors should review. Among 1,823 Industrial Products companies, Rational AG ranks worse than 56.88% on this metric.
As of today (2026-09-17), Rational AG's current share price is $695.2012. Rational AG's E10 for the quarter that ended in Jun. 2026 was $19.69. Rational AG's Shiller PE Ratio for today is 35.30.
The historical rank and industry rank for Rational AG's Shiller PE Ratio or its related term are showing as below:
RTLLF'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 32.82 Med: 53.37 Max: 84.2
Current: 32.82
During the past years, Rational AG's highest Shiller PE Ratio was 84.20. The lowest was 32.82. And the median was 53.37.
RTLLF's Shiller PE Ratio is ranked worse than 56.88% of 1823
companies
in the Industrial Products industry
Industry Median: 27.71
vs RTLLF: 32.82
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.
Rational AG's adjusted earnings per share data for the three months ended in Jun. 2026 was $0.000. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $19.69 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Rational AG (OTCPK:RTLLF) 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.
Rational AG Shiller PE Ratio Related Terms
Rational AG Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Rational AG'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.
RTLLF vs GEV, ETN, PH: Shiller PE Ratio Comparison
For the Specialty Industrial Machinery subindustry, Rational AG'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.
Rational AG Shiller PE Ratio vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Rational AG's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Rational AG'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.
Rational AG'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.
Rational AG's E10 for the quarter that ended in Jun. 2026 is calculated as:
For example, Rational AG's adjusted earnings per share data for the three months ended in Jun. 2026 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.
Rational AG (RTLLF) has a Shiller PE Ratio of 35.30 as of Sep. 17, 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 Rational AG and its competitors. This is 34% below median its historical median of 53.37. Over the past decade, Rational AG's Shiller PE Ratio has ranged from 32.82 to 84.20. According to the industry distribution chart, Rational AG ranks #1037 out of 1823 companies in the Industrial Products industry, placing it in the top 56.9%.
Is Rational AG's Shiller PE Ratio too high?
Rational AG's current Shiller PE Ratio of 35.30 is 34% below median its 10-year median of 53.37. Over the past 10 years, this metric has ranged from a low of 32.82 to a high of 84.20. The Industrial Products industry median Shiller PE Ratio is 27.71. Rational AG's value of 35.30 is 27.4% above this industry median. Based on the distribution chart, Rational AG ranks #1037 out of 1823 companies in the Industrial Products industry, which is below the industry midpoint. Overall, Rational AG has a GF Score™ of 92/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Rational AG's Shiller PE Ratio compare to GEV and ETN?
According to the Industrial Products industry distribution chart, Rational AG ranks #1037 out of 1823 companies for Shiller PE Ratio. This places Rational AG in the lower half of its industry. The industry median Shiller PE Ratio is 27.71. Rational AG's value of 35.30 is 27.4% above this benchmark. Historically, Rational AG's own Shiller PE Ratio has ranged from 32.82 to 84.20 over the past decade. While the company's 10-year median is 53.37 vs. the industry median of 27.71, Rational AG 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 an Industrial Products company?
The median Shiller PE Ratio among Industrial Products companies is 27.71, based on 1,823 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. Rational AG's current Shiller PE Ratio of 35.30 is 27.4% 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 Rational AG and its competitors. For the Industrial Products industry, the median Shiller PE Ratio is 27.71 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Rational AG's current Shiller PE Ratio is 35.30, which is 34% below median its own 10-year median of 53.37. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Rational AG stock overvalued right now?
Based on GuruFocus' analysis, Rational AG (RTLLF) is currently considered Modestly Undervalued. The stock's GF Value™ is $910.93, compared to a current price of $695.20 — trading 23.7% below its estimated fair value. The current Shiller PE Ratio is 35.30, which is 34% below median its 10-year median of 53.37 and 27.4% above the Industrial Products industry median of 27.71. Rational AG's overall GF Score™ is 92/100 with 1 warning sign 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 Rational AG (RTLLF), the current Shiller PE Ratio is 35.30 as of Sep. 17, 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 Rational AG (RTLLF) Overvalued in 2026?
Based on GuruFocus' analysis, Rational AG stock appears to be undervalued.
The current stock price of $695.20 is trading 23.7% below its estimated GF Value™ of $910.93.
GuruFocus considers Rational AG to be Modestly Undervalued.
Key valuation signals for RTLLF:
Shiller PE Ratio: 35.30 (34% below median its 10-year median of 53.37)
GF Value™: $910.93 vs. price of $695.20 (23.7% below fair value)
Industry Position: 27.4% above the Industrial Products median (#1037 of 1823)
No single metric tells the full story. See the RTLLF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Rational specializes in manufacturing automated multifunctional ovens for professional kitchens that replace conventional cooking appliances such as a stove, grill, and oven. Rational has produced over 1 million combi-steamers since its first combi-steamer in 1976, which are used to prepare 160 million food dishes daily. Approximately 72% of group revenue is generated from the sale of cooking appliances, mostly the iCombi Pro that was launched in May 2020 and its predecessor product. Rational has a presence in over 120 countries. The majority of revenue is earned in Europe, followed by North America and Asia.
92GF Score
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