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The historical rank and industry rank for Turkiye Sise ve Cam Fabrikalari AS's Shiller PE Ratio or its related term are showing as below:
IST:SISE'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 9.24 Med: 15.74 Max: 32.52
Current: 11.49
During the past years, Turkiye Sise ve Cam Fabrikalari AS's highest Shiller PE Ratio was 32.52. The lowest was 9.24. And the median was 15.74.
IST:SISE's Shiller PE Ratio is ranked better than 70.83% of 360
companies
in the Conglomerates industry
Industry Median: 17.58
vs IST:SISE: 11.49
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.
Turkiye Sise ve Cam Fabrikalari AS's adjusted earnings per share data for the three months ended in Jun. 2026 was ₺1.367. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is ₺3.46 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Turkiye Sise ve Cam Fabrikalari AS (IST:SISE) 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.
Turkiye Sise ve Cam Fabrikalari AS Shiller PE Ratio Related Terms
Turkiye Sise ve Cam Fabrikalari 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.
Turkiye Sise ve Cam Fabrikalari AS Shiller PE Ratio Chart
For the Conglomerates subindustry, Turkiye Sise ve Cam Fabrikalari 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.
Turkiye Sise ve Cam Fabrikalari AS Shiller PE Ratio vs Conglomerates Industry
For the Conglomerates industry and Industrials sector, Turkiye Sise ve Cam Fabrikalari AS's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Turkiye Sise ve Cam Fabrikalari AS's Shiller PE Ratio falls into.
Turkiye Sise ve Cam Fabrikalari 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.
Turkiye Sise ve Cam Fabrikalari AS (IST:SISE) has a Shiller PE Ratio of 11.63 as of Aug. 27, 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 Turkiye Sise ve Cam Fabrikalari AS and its competitors. This is 26% below median its historical median of 15.74. Over the past decade, Turkiye Sise ve Cam Fabrikalari AS's Shiller PE Ratio has ranged from 9.24 to 32.52. According to the industry distribution chart, Turkiye Sise ve Cam Fabrikalari AS ranks #105 out of 360 companies in the Conglomerates industry, placing it in the top 29.2%.
Is Turkiye Sise ve Cam Fabrikalari AS's Shiller PE Ratio too high?
Turkiye Sise ve Cam Fabrikalari AS's current Shiller PE Ratio of 11.63 is 26% below median its 10-year median of 15.74. Over the past 10 years, this metric has ranged from a low of 9.24 to a high of 32.52. The Conglomerates industry median Shiller PE Ratio is 17.58. Turkiye Sise ve Cam Fabrikalari AS's value of 11.63 is 33.8% below this industry median. Based on the distribution chart, Turkiye Sise ve Cam Fabrikalari AS ranks #105 out of 360 companies in the Conglomerates industry, which is above the industry midpoint. Overall, Turkiye Sise ve Cam Fabrikalari AS has a GF Score™ of 90/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Turkiye Sise ve Cam Fabrikalari AS's Shiller PE Ratio compare to MMM and HON?
According to the Conglomerates industry distribution chart, Turkiye Sise ve Cam Fabrikalari AS ranks #105 out of 360 companies for Shiller PE Ratio. This puts Turkiye Sise ve Cam Fabrikalari AS in the upper half of its industry. The industry median Shiller PE Ratio is 17.58. Turkiye Sise ve Cam Fabrikalari AS's value of 11.63 is 33.8% below this benchmark. Historically, Turkiye Sise ve Cam Fabrikalari AS's own Shiller PE Ratio has ranged from 9.24 to 32.52 over the past decade. While the company's 10-year median is 15.74 vs. the industry median of 17.58, Turkiye Sise ve Cam Fabrikalari 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 a Conglomerates company?
The median Shiller PE Ratio among Conglomerates companies is 17.58, based on 360 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. Turkiye Sise ve Cam Fabrikalari AS's current Shiller PE Ratio of 11.63 is 33.8% 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 Turkiye Sise ve Cam Fabrikalari AS and its competitors. For the Conglomerates industry, the median Shiller PE Ratio is 17.58 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Turkiye Sise ve Cam Fabrikalari AS's current Shiller PE Ratio is 11.63, which is 26% below median its own 10-year median of 15.74. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Turkiye Sise ve Cam Fabrikalari AS stock overvalued right now?
Based on GuruFocus' analysis, Turkiye Sise ve Cam Fabrikalari AS (IST:SISE) is currently considered Modestly Undervalued. The stock's GF Value™ is ₺51.15, compared to a current price of ₺40.24 — trading 21.3% below its estimated fair value. The current Shiller PE Ratio is 11.63, which is 26% below median its 10-year median of 15.74 and 33.8% below the Conglomerates industry median of 17.58. Turkiye Sise ve Cam Fabrikalari AS's overall GF Score™ is 90/100 with 8 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 Turkiye Sise ve Cam Fabrikalari AS (IST:SISE), the current Shiller PE Ratio is 11.63 as of Aug. 27, 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 Turkiye Sise ve Cam Fabrikalari AS (IST:SISE) Overvalued in 2026?
Based on GuruFocus' analysis, Turkiye Sise ve Cam Fabrikalari AS stock appears to be undervalued.
The current stock price of ₺40.24 is trading 21.3% below its estimated GF Value™ of ₺51.15.
GuruFocus considers Turkiye Sise ve Cam Fabrikalari AS to be Modestly Undervalued.
Key valuation signals for IST:SISE:
Shiller PE Ratio: 11.63 (26% below median its 10-year median of 15.74)
GF Value™: ₺51.15 vs. price of ₺40.24 (21.3% below fair value)
Industry Position: 33.8% below the Conglomerates median (#105 of 360)
No single metric tells the full story. See the IST:SISE stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Turkiye Sise ve Cam Fabrikalari AS is a holding company that, through its subsidiaries, manufactures and sells glass products, chemicals, and glass packaging. The firm's five segments are based on product type. The flat glass segment, which generates more revenue than any other segment, sells glass panes used in windows and automobile windshields. The glassware segment sells glass beverage bottles and crystal products. The other three segments are glass packaging, chemicals, and other, which consists primarily of services including insurance and the export and import of goods. The majority of revenue comes from Turkey.
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