Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
TUPRF'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 10.92 Med: 17.98 Max: 33.21
Current: 29.11
During the past years, Tupras-Turkiye Petrol Rafineleri AS's highest Shiller PE Ratio was 33.21. The lowest was 10.92. And the median was 17.98.
TUPRF's Shiller PE Ratio is ranked worse than 72.73% of 440
companies
in the Oil & Gas industry
Industry Median: 17.955
vs TUPRF: 29.11
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.
Tupras-Turkiye Petrol Rafineleri AS's adjusted earnings per share data for the three months ended in Jun. 2026 was $0.515. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $0.22 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Tupras-Turkiye Petrol Rafineleri AS (OTCPK:TUPRF) 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.
Tupras-Turkiye Petrol Rafineleri AS Shiller PE Ratio Related Terms
Tupras-Turkiye Petrol Rafineleri AS 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.
Tupras-Turkiye Petrol Rafineleri AS Shiller PE Ratio Chart
TUPRF vs MPC, VLO, PSX: Shiller PE Ratio Comparison
For the Oil & Gas Refining & Marketing subindustry, Tupras-Turkiye Petrol Rafineleri 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.
Tupras-Turkiye Petrol Rafineleri AS Shiller PE Ratio vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Tupras-Turkiye Petrol Rafineleri AS's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Tupras-Turkiye Petrol Rafineleri AS's Shiller PE Ratio falls into.
Tupras-Turkiye Petrol Rafineleri AS 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.
Tupras-Turkiye Petrol Rafineleri AS (TUPRF) has a Shiller PE Ratio of 15.75 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 Tupras-Turkiye Petrol Rafineleri AS and its competitors. This is 12% below median its historical median of 17.98. Over the past decade, Tupras-Turkiye Petrol Rafineleri AS's Shiller PE Ratio has ranged from 10.92 to 33.21. According to the industry distribution chart, Tupras-Turkiye Petrol Rafineleri AS ranks #320 out of 440 companies in the Oil & Gas industry, placing it in the top 72.7%.
Is Tupras-Turkiye Petrol Rafineleri AS's Shiller PE Ratio too high?
Tupras-Turkiye Petrol Rafineleri AS's current Shiller PE Ratio of 15.75 is 12% below median its 10-year median of 17.98. Over the past 10 years, this metric has ranged from a low of 10.92 to a high of 33.21. The Oil & Gas industry median Shiller PE Ratio is 17.96. Tupras-Turkiye Petrol Rafineleri AS's value of 15.75 is 12.3% below this industry median. Based on the distribution chart, Tupras-Turkiye Petrol Rafineleri AS ranks #320 out of 440 companies in the Oil & Gas industry, which is below the industry midpoint. Overall, Tupras-Turkiye Petrol Rafineleri AS has a GF Score™ of 65/100, reflecting its overall financial health beyond just this single metric.
How does Tupras-Turkiye Petrol Rafineleri AS's Shiller PE Ratio compare to MPC and VLO?
According to the Oil & Gas industry distribution chart, Tupras-Turkiye Petrol Rafineleri AS ranks #320 out of 440 companies for Shiller PE Ratio. This places Tupras-Turkiye Petrol Rafineleri AS in the lower half of its industry. The industry median Shiller PE Ratio is 17.96. Tupras-Turkiye Petrol Rafineleri AS's value of 15.75 is 12.3% below this benchmark. Historically, Tupras-Turkiye Petrol Rafineleri AS's own Shiller PE Ratio has ranged from 10.92 to 33.21 over the past decade. While the company's 10-year median is 17.98 vs. the industry median of 17.96, Tupras-Turkiye Petrol Rafineleri AS 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 an Oil & Gas company?
The median Shiller PE Ratio among Oil & Gas companies is 17.96, based on 440 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. Tupras-Turkiye Petrol Rafineleri AS's current Shiller PE Ratio of 15.75 is 12.3% 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 Tupras-Turkiye Petrol Rafineleri AS and its competitors. For the Oil & Gas industry, the median Shiller PE Ratio is 17.96 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Tupras-Turkiye Petrol Rafineleri AS's current Shiller PE Ratio is 15.75, which is 12% below median its own 10-year median of 17.98. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tupras-Turkiye Petrol Rafineleri AS stock overvalued right now?
Tupras-Turkiye Petrol Rafineleri AS (TUPRF) has a current Shiller PE Ratio of 15.75. The stock's GF Value™ is $1.58, compared to a current price of $3.46 — trading 119.3% above its estimated fair value. The current Shiller PE Ratio is 15.75, which is 12% below median its 10-year median of 17.98 and 12.3% below the Oil & Gas industry median of 17.96. Tupras-Turkiye Petrol Rafineleri AS's overall GF Score™ is 65/100 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 Tupras-Turkiye Petrol Rafineleri AS (TUPRF), the current Shiller PE Ratio is 15.75 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 Tupras-Turkiye Petrol Rafineleri AS (TUPRF) Overvalued in 2026?
Based on GuruFocus' analysis, Tupras-Turkiye Petrol Rafineleri AS stock appears to be overvalued.
The current stock price of $3.46 is trading 119.3% above its estimated GF Value™ of $1.58.
Key valuation signals for TUPRF:
Shiller PE Ratio: 15.75 (12% below median its 10-year median of 17.98)
GF Value™: $1.58 vs. price of $3.46 (119.3% above fair value)
Industry Position: 12.3% below the Oil & Gas median (#320 of 440)
No single metric tells the full story. See the TUPRF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Tupras-Turkiye Petrol Rafineleri AS provides and refines crude oil through Turkish and international refineries. It also operates petrochemical factories and facilities. The company's complete line of products includes liquefied petroleum gas(LPG), fuel oil, waxes and extracts, bitumen, and other products. In addition to refining and producing products, the firm engages in the purchase, sell, import, export, store, marketing, and distribution of a variety of petroleum products. Distribution is completed through a network of foreign and domestic wholesalers and retailers. The majority of sales from refineries are domestic.
65GF Score
Get the complete analysis for TUPRF
Shiller PE Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
TUPRF has been successfully added to your 
