Core Natural Resources (STU:C9X0) E10: € (As of Jun. 2026)

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STU:C9X0 Core Natural Resources Inc STU:C9X0
86 GF Score
Price €78.96
GF Value €84.34
Valuation Fairly Valued
! 6 Warning Signs
View Full Analysis

What is Core Natural Resources E10?

Core Natural Resources STU:C9X0 -2.66% 86 E10 is € as of Jun. 2026. GuruFocus rates STU:C9X0 with a GF Score™ of 86/100 and a GF Value™ of €84.34 (Fairly Valued). The stock has 6 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

Core Natural Resources's adjusted earnings per share data for the three months ended in Jun. 2026 was €2.155. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is for the trailing ten years ended in Jun. 2026.

Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the E10 growth rate using E10 data.

As of today (2026-09-20), Core Natural Resources's current stock price is €78.96. Core Natural Resources's E10 for the quarter that ended in Jun. 2026 was . Core Natural Resources's Shiller PE Ratio of today is .

During the past 12 years, the highest Shiller PE Ratio of Core Natural Resources was 19.46. The lowest was 12.66. And the median was 14.60.


Core Natural Resources  (STU:C9X0) E10 Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

For the Shiller P/E, 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 P/E is also called PE10.

The Shiller P/E was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

During the past 12 years, the highest Shiller P/E Ratio of Core Natural Resources was 19.46. The lowest was 12.66. And the median was 14.60.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


Core Natural Resources E10 Related Terms


Core Natural Resources E10 Historical Data

* Premium members only.

The historical data trend for Core Natural Resources's E10 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.

Core Natural Resources E10 Chart

Core Natural Resources Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
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Core Natural Resources Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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STU:C9X0 vs BTU, ARLP, NRP: E10 Comparison

For the Thermal Coal subindustry, Core Natural Resources'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.


Core Natural Resources Shiller PE Ratio vs Other Energy Sources Industry

For the Other Energy Sources industry and Energy sector, Core Natural Resources's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Core Natural Resources's Shiller PE Ratio falls into.


STU:C9X0
86GF Score
Core Natural Resources Inc STU:C9X0
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Core Natural Resources E10 Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today's price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

We adjusted the earnings of 2001 earnings data with the total inflation from 2001 through 2010 to the equivalent earnings in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart earned $1 a share in 2001, then the 2001's equivalent earnings in 2010 is $1.4 a share. If Wal-Mart earns $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 earnings in 2010 is $1.35. So on and so forth, you get the equivalent earnings of past 10 years. Then you add them together and divided the sum by 10 to get 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.

For example, Core Natural Resources's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=2.1552/333.9520*333.9520
=2.155

Current CPI (Jun. 2026) = 333.9520.

Core Natural Resources Quarterly Data

per share eps CPI Adj_EPS
201609 0.080 241.428 0.111
201612 0.614 241.432 0.849
201703 1.375 243.801 1.883
201706 1.557 244.955 2.123
201709 0.235 246.819 0.319
201712 -0.883 246.524 -1.197
201803 1.790 249.554 2.396
201806 1.326 251.989 1.757
201809 0.173 252.439 0.228
201812 1.237 251.233 1.644
201903 0.457 254.202 0.600
201906 1.386 256.143 1.808
201909 0.145 256.759 0.188
201912 0.483 256.974 0.628
202003 0.082 258.115 0.106
202006 -0.627 257.797 -0.813
202009 -0.238 260.280 -0.305
202012 0.411 260.474 0.527
202103 0.626 264.877 0.789
202106 0.099 271.696 0.121
202109 -2.800 274.310 -3.408
202112 2.977 278.802 3.566
202203 -0.114 287.504 -0.133
202206 3.317 296.311 3.739
202209 4.221 296.808 4.749
202212 5.287 296.797 5.949
202303 6.108 301.836 6.758
202306 4.538 305.109 4.967
202309 2.858 307.789 3.101
202312 4.697 306.746 5.114
202403 3.122 312.332 3.338
202406 1.817 314.175 1.931
202409 2.931 315.301 3.104
202412 0.983 315.605 1.040
202503 -1.310 319.799 -1.367
202506 -0.616 322.561 -0.637
202509 0.524 324.800 0.539
202512 -1.331 324.054 -1.372
202603 0.352 330.213 0.356
202606 2.155 333.952 2.155

Add all the adjusted EPS together and divide 10 will get our e10.

Frequently Asked Questions Learn more about E10 →
What does a E10 of € mean?
Core Natural Resources (STU:C9X0) has a E10 of € as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Core Natural Resources and its competitors.
Is Core Natural Resources' E10 too high?
Core Natural Resources' current E10 is €. Overall, Core Natural Resources has a GF Score™ of 86/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Core Natural Resources' E10 compare to BTU and ARLP?
Core Natural Resources' E10 of € can be compared against companies in the Other Energy Sources industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for an Other Energy Sources company?
A good E10 depends on the Other Energy Sources industry context. However, E10 should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Core Natural Resources and its competitors. Core Natural Resources's current E10 is €. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Core Natural Resources stock overvalued right now?
Based on GuruFocus' analysis, Core Natural Resources (STU:C9X0) is currently considered Fairly Valued. The stock's GF Value™ is €84.34, compared to a current price of €78.96 — trading 6.4% below its estimated fair value. The current E10 is €. Core Natural Resources' overall GF Score™ is 86/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For Core Natural Resources (STU:C9X0), the current E10 is € as of Jun. 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 Core Natural Resources (STU:C9X0) Overvalued in 2026?

Based on GuruFocus' analysis, Core Natural Resources stock appears to be undervalued. The current stock price of €78.96 is trading 6.4% below its estimated GF Value™ of €84.34. GuruFocus considers Core Natural Resources to be Fairly Valued.

Key valuation signals for STU:C9X0:

  • E10:
  • GF Value™: €84.34 vs. price of €78.96 (6.4% below fair value)
  • GF Score™: 86/100 with 6 warning signs

No single metric tells the full story. See the STU:C9X0 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Core Natural Resources Business Description

Other Exchanges CNR:USA
Address 275 Technology Drive, Suite 101, Canonsburg, PA, USA, 15317-9565
Core Natural Resources Inc is a producer and exporter of metallurgical and thermal coal. The company owns and operates longwall mining operations in the nation and export terminals on the Eastern seaboard. The activities of the company involves mining of thermal coal, power generation, and other related activities.
86GF Score

Get the complete analysis for STU:C9X0

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€78.96
Price
€84.34
GF Value