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Sumitomo Metal Mining CoSTMNF 75 Shiller PE Ratio is 22.77 as of Aug. 21, 2026, which is 43% above its 10-year median of 15.94. GuruFocus rates STMNF with a GF Score™ of 75/100 and a GF Value™ of $37.18 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 412 Metals & Mining companies, Sumitomo Metal Mining Co ranks better than 64.08% on this metric.
The historical rank and industry rank for Sumitomo Metal Mining Co's Shiller PE Ratio or its related term are showing as below:
STMNF'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 8.44 Med: 15.94 Max: 34.91
Current: 23.91
During the past years, Sumitomo Metal Mining Co's highest Shiller PE Ratio was 34.91. The lowest was 8.44. And the median was 15.94.
STMNF's Shiller PE Ratio is ranked better than 64.08% of 412
companies
in the Metals & Mining industry
Industry Median: 33.025
vs STMNF: 23.91
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.
Sumitomo Metal Mining Co's adjusted earnings per share data for the three months ended in Jun. 2026 was $2.032. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $2.74 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Sumitomo Metal Mining Co (OTCPK:STMNF) 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.
Sumitomo Metal Mining Co Shiller PE Ratio Related Terms
Sumitomo Metal Mining Co 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.
Sumitomo Metal Mining Co Shiller PE Ratio Competitor Comparison
For the Other Industrial Metals & Mining subindustry, Sumitomo Metal Mining Co'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.
Sumitomo Metal Mining Co Shiller PE Ratio vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Sumitomo Metal Mining Co's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Sumitomo Metal Mining Co's Shiller PE Ratio falls into.
Sumitomo Metal Mining Co 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.
Sumitomo Metal Mining Co (STMNF) has a Shiller PE Ratio of 22.77 as of Aug. 21, 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 Sumitomo Metal Mining Co and its competitors. This is 43% above median its historical median of 15.94. Over the past decade, Sumitomo Metal Mining Co's Shiller PE Ratio has ranged from 8.44 to 34.91. According to the industry distribution chart, Sumitomo Metal Mining Co ranks #148 out of 412 companies in the Metals & Mining industry, placing it in the top 35.9%.
Is Sumitomo Metal Mining Co's Shiller PE Ratio too high?
Sumitomo Metal Mining Co's current Shiller PE Ratio of 22.77 is 43% above median its 10-year median of 15.94. Over the past 10 years, this metric has ranged from a low of 8.44 to a high of 34.91. The Metals & Mining industry median Shiller PE Ratio is 33.03. Sumitomo Metal Mining Co's value of 22.77 is 31.1% below this industry median. Based on the distribution chart, Sumitomo Metal Mining Co ranks #148 out of 412 companies in the Metals & Mining industry, which is above the industry midpoint. Overall, Sumitomo Metal Mining Co has a GF Score™ of 75/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Sumitomo Metal Mining Co's Shiller PE Ratio compare to competitors?
According to the Metals & Mining industry distribution chart, Sumitomo Metal Mining Co ranks #148 out of 412 companies for Shiller PE Ratio. This puts Sumitomo Metal Mining Co in the upper half of its industry. The industry median Shiller PE Ratio is 33.03. Sumitomo Metal Mining Co's value of 22.77 is 31.1% below this benchmark. Historically, Sumitomo Metal Mining Co's own Shiller PE Ratio has ranged from 8.44 to 34.91 over the past decade. While the company's 10-year median is 15.94 vs. the industry median of 33.03, Sumitomo Metal Mining Co 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 Metals & Mining company?
The median Shiller PE Ratio among Metals & Mining companies is 33.03, based on 412 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. Sumitomo Metal Mining Co's current Shiller PE Ratio of 22.77 is 31.1% 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 Sumitomo Metal Mining Co and its competitors. For the Metals & Mining industry, the median Shiller PE Ratio is 33.03 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Sumitomo Metal Mining Co's current Shiller PE Ratio is 22.77, which is 43% above median its own 10-year median of 15.94. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sumitomo Metal Mining Co stock overvalued right now?
Based on GuruFocus' analysis, Sumitomo Metal Mining Co (STMNF) is currently considered Significantly Overvalued. The stock's GF Value™ is $37.18, compared to a current price of $62.40 — trading 67.8% above its estimated fair value. The current Shiller PE Ratio is 22.77, which is 43% above median its 10-year median of 15.94 and 31.1% below the Metals & Mining industry median of 33.03. Sumitomo Metal Mining Co's overall GF Score™ is 75/100 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 Sumitomo Metal Mining Co (STMNF), the current Shiller PE Ratio is 22.77 as of Aug. 21, 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 Sumitomo Metal Mining Co (STMNF) Overvalued in 2026?
Based on GuruFocus' analysis, Sumitomo Metal Mining Co stock appears to be overvalued.
The current stock price of $62.40 is trading 67.8% above its estimated GF Value™ of $37.18.
GuruFocus considers Sumitomo Metal Mining Co to be Significantly Overvalued.
Key valuation signals for STMNF:
Shiller PE Ratio: 22.77 (43% above median its 10-year median of 15.94)
GF Value™: $37.18 vs. price of $62.40 (67.8% above fair value)
Industry Position: 31.1% below the Metals & Mining median (#148 of 412)
No single metric tells the full story. See the STMNF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Sumitomo Metal Mining Co Ltd is a Japan-based company engaged in the mining business. The company operates through three segments. The Material segment manufactures and sells battery materials, powder and crystalline materials, tape materials, catalysts, and related products. The Resource segment focuses on the exploration, development, production, and sale of nonferrous metal resources in Japan and overseas. The Smelting segment engages in the smelting and sale of copper, nickel, ferronickel, zinc, and precious metals, including gold, silver, platinum, and palladium. The Others segment covers real estate and engineering businesses. It generates the majority of its revenue from the Smelting segment.
75GF Score
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