Bumech (WAR:BMC) E10: zł-4.45 (As of Mar. 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
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.
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Charlie Tian
Founder & CEO of GuruFocus
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.

WAR:BMC Bumech SA WAR:BMC
42 GF Score
Price zł16.08
GF Value zł5.90
Valuation Significantly Overvalued
! 5 Warning Signs
View Full Analysis

What is Bumech E10?

Bumech WAR:BMC -0.68% 42 E10 is zł-4.45 as of Mar. 2026. GuruFocus rates WAR:BMC with a GF Score™ of 42/100 and a GF Value™ of zł5.90 (Significantly Overvalued). The stock has 5 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.

Bumech's adjusted earnings per share data for the three months ended in Mar. 2026 was zł40.023. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is zł-4.45 for the trailing ten years ended in Mar. 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.

During the past 13 years, the highest 3-Year average E10 Growth Rate of Bumech was 22.70% per year. The lowest was -12.50% per year. And the median was 8.60% per year.

As of today (2026-09-15), Bumech's current stock price is zł16.08. Bumech's E10 for the quarter that ended in Mar. 2026 was zł-4.45. Bumech's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Bumech was 12.47. The lowest was 0.23. And the median was 1.76.


Bumech  (WAR:BMC) 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 13 years, the highest Shiller P/E Ratio of Bumech was 12.47. The lowest was 0.23. And the median was 1.76.


Be Aware

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


Bumech E10 Related Terms


Bumech E10 Historical Data

* Premium members only.

The historical data trend for Bumech'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.

Bumech E10 Chart

Bumech Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 3.45 6.55 6.48 -3.02 -4.32

Bumech Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
E10 Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only -3.07 -3.07 -3.08 -4.32 -4.45

WAR:BMC vs CNR: E10 Comparison

For the Thermal Coal subindustry, Bumech'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.


Bumech Shiller PE Ratio vs Other Energy Sources Industry

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

* The bar in red indicates where Bumech's Shiller PE Ratio falls into.


WAR:BMC
42GF Score
Bumech SA WAR:BMC
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Bumech 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, Bumech's adjusted earnings per share data for the three months ended in Mar. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=40.0225/163.0700*163.0700
=40.023

Current CPI (Mar. 2026) = 163.0700.

Bumech Quarterly Data

per share eps CPI Adj_EPS
201512 0.220 99.471 0.361
201603 0.220 98.983 0.362
201606 -0.330 99.552 -0.541
201609 0.181 99.064 0.298
201612 0.030 100.366 0.049
201703 1.844 101.018 2.976
201706 -1.587 101.180 -2.558
201709 -1.106 101.343 -1.780
201803 -0.385 102.564 -0.612
201806 -1.689 103.378 -2.664
201809 -0.758 103.378 -1.196
201812 -2.145 103.785 -3.371
201903 -0.109 104.274 -0.170
201909 -0.241 105.983 -0.371
201912 -0.404 107.123 -0.615
202003 0.169 109.076 0.252
202006 -0.687 109.402 -1.024
202009 0.091 109.320 0.136
202012 0.535 109.565 0.797
202103 0.085 112.658 0.123
202106 1.382 113.960 1.978
202109 2.626 115.588 3.704
202112 23.802 119.088 32.593
202203 1.343 125.031 1.751
202206 8.682 131.705 10.750
202209 10.163 135.531 12.228
202212 4.434 139.113 5.198
202303 2.069 145.950 2.312
202306 -4.614 147.009 -5.118
202309 1.798 146.113 2.006
202312 0.309 147.741 0.341
202403 -2.167 149.044 -2.371
202406 -1.693 150.997 -1.828
202409 -1.442 153.439 -1.532
202412 -75.429 154.660 -79.531
202503 -0.029 157.021 -0.030
202506 0.478 157.509 0.495
202509 -0.262 158.000 -0.270
202512 -10.586 158.320 -10.904
202603 40.023 163.070 40.023

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 zł-4.45 mean?
Bumech (WAR:BMC) has a E10 of zł-4.45 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Bumech and its competitors.
Is Bumech's E10 too high?
Bumech's current E10 is zł-4.45. Overall, Bumech has a GF Score™ of 42/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Bumech's E10 compare to CNR?
Bumech's E10 of zł-4.45 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 Bumech and its competitors. Bumech's current E10 is zł-4.45. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Bumech stock overvalued right now?
Based on GuruFocus' analysis, Bumech (WAR:BMC) is currently considered Significantly Overvalued. The stock's GF Value™ is zł5.90, compared to a current price of zł16.08 — trading 172.5% above its estimated fair value. The current E10 is zł-4.45. Bumech's overall GF Score™ is 42/100 with 5 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 Bumech (WAR:BMC), the current E10 is zł-4.45 as of Mar. 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 Bumech (WAR:BMC) Overvalued in 2026?

Based on GuruFocus' analysis, Bumech stock appears to be overvalued. The current stock price of zł16.08 is trading 172.5% above its estimated GF Value™ of zł5.90. GuruFocus considers Bumech to be Significantly Overvalued.

Key valuation signals for WAR:BMC:

  • E10: zł-4.45
  • GF Value™: zł5.90 vs. price of zł16.08 (172.5% above fair value)
  • GF Score™: 42/100 with 5 warning signs

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


Bumech Business Description

Address ul. Krakowska 191, Katowice, POL, 40-389
Bumech SA is specialized in scope of service, maintenance of operations and repair works of mining machinery and equipment. The company is also providing services in the area of drilling underground headings in coal mines.
42GF Score

Get the complete analysis for WAR:BMC

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

zł16.08
Price
zł5.90
GF Value