Sonel (WAR:SON) E10: zł1.01 (As of Mar. 2026)


WAR:SON Sonel SA WAR:SON
94 GF Score
Price zł13.80
GF Value zł18.06
Valuation Modestly Undervalued
! 7 Warning Signs
View Full Analysis

What is Sonel E10?

Sonel WAR:SON +0.36% 94 E10 is zł1.01 as of Mar. 2026. GuruFocus rates WAR:SON with a GF Score™ of 94/100 and a GF Value™ of zł18.06 (Modestly Undervalued). The stock has 7 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.

Sonel's adjusted earnings per share data for the three months ended in Mar. 2026 was zł0.220. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is zł1.01 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Sonel's average E10 Growth Rate was -5.60% per year. During the past 3 years, the average E10 Growth Rate was 14.70% per year. 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 Sonel was 17.00% per year. The lowest was 14.70% per year. And the median was 15.85% per year.

As of today (2026-06-27), Sonel's current stock price is zł13.80. Sonel's E10 for the quarter that ended in Mar. 2026 was zł1.01. Sonel's Shiller PE Ratio of today is 13.66.

During the past 13 years, the highest Shiller PE Ratio of Sonel was 20.63. The lowest was 11.09. And the median was 14.79.


Sonel  (WAR:SON) 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.

Sonel's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=13.80/1.01
=13.66

* 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.

During the past 13 years, the highest Shiller P/E Ratio of Sonel was 20.63. The lowest was 11.09. And the median was 14.79.


Be Aware

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


Sonel E10 Related Terms


Sonel E10 Historical Data

* Premium members only.

The historical data trend for Sonel'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.

Sonel E10 Chart

Sonel Annual Data
Trend Dec15 Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.60 0.71 0.86 0.96 1.07

Sonel Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 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 1.07 1.08 1.07 1.02 1.01

WAR:SON vs COHR, KEYS, GRMN: E10 Comparison

For the Scientific & Technical Instruments subindustry, Sonel'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.


Sonel Shiller PE Ratio vs Hardware Industry

For the Hardware industry and Technology sector, Sonel's Shiller PE Ratio distribution charts can be found below:

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


WAR:SON
94GF Score
Sonel SA WAR:SON
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Sonel 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, Sonel'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)
=0.22/158.3232*158.3232
=0.220

Current CPI (Mar. 2026) = 158.3232.

Sonel Quarterly Data

per share eps CPI Adj_EPS
201603 0.139 98.983 0.222
201606 0.291 99.552 0.463
201609 0.125 99.064 0.200
201612 0.114 100.366 0.180
201703 0.033 101.018 0.052
201706 0.067 101.180 0.105
201709 0.090 101.343 0.141
201712 0.006 102.564 0.009
201803 0.079 102.564 0.122
201806 0.116 103.378 0.178
201809 0.141 103.378 0.216
201812 0.090 103.785 0.137
201903 0.110 104.274 0.167
201906 0.190 105.983 0.284
201909 0.208 105.983 0.311
201912 -0.050 107.123 -0.074
202003 0.330 109.076 0.479
202006 0.290 109.402 0.420
202009 0.180 109.320 0.261
202012 0.160 109.565 0.231
202103 0.350 112.658 0.492
202106 0.090 113.960 0.125
202109 0.220 115.588 0.301
202112 0.380 119.088 0.505
202203 0.230 125.031 0.291
202206 0.250 131.705 0.301
202209 0.250 135.531 0.292
202212 0.310 139.113 0.353
202303 0.270 145.950 0.293
202306 0.170 147.009 0.183
202309 0.190 146.113 0.206
202312 0.590 147.741 0.632
202403 0.320 149.044 0.340
202406 0.080 150.997 0.084
202409 0.290 153.439 0.299
202412 0.740 154.660 0.758
202503 0.300 157.021 0.302
202506 0.140 157.509 0.141
202509 -0.100 157.998 -0.100
202603 0.220 158.323 0.220

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 zł1.01 mean?
Sonel (WAR:SON) has a E10 of zł1.01 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Sonel and its competitors.
Is Sonel's E10 too high?
Sonel's current E10 is zł1.01. Overall, Sonel has a GF Score™ of 94/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Sonel's E10 compare to COHR and KEYS?
Sonel's E10 of zł1.01 can be compared against companies in the Hardware 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 a Hardware company?
A good E10 depends on the Hardware 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 Sonel and its competitors. Sonel's current E10 is zł1.01. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sonel stock overvalued right now?
Based on GuruFocus' analysis, Sonel (WAR:SON) is currently considered Modestly Undervalued. The stock's GF Value™ is zł18.06, compared to a current price of zł13.80 — trading 23.6% below its estimated fair value. The current E10 is zł1.01. Sonel's overall GF Score™ is 94/100 with 7 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 Sonel (WAR:SON), the current E10 is zł1.01 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 Sonel (WAR:SON) Overvalued in 2026?

Based on GuruFocus' analysis, Sonel stock appears to be undervalued. The current stock price of zł13.80 is trading 23.6% below its estimated GF Value™ of zł18.06. GuruFocus considers Sonel to be Modestly Undervalued.

Key valuation signals for WAR:SON:

  • E10: zł1.01
  • GF Value™: zł18.06 vs. price of zł13.80 (23.6% below fair value)
  • GF Score™: 94/100 with 7 warning signs

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


Sonel Business Description

Address Wokulskiego 11, Swidnica, POL, 58-100
Sonel SA is a Polish manufacturer of measuring instruments for power generation and telecommunications sectors. The company is used to measure fault loop resistance and impedance, insulation resistance, earth resistance and soil resistivity, among others. It offers low resistance meters, phase sequence testers, wire tracers, power quality analyzers, clamp meters, multimeters and pyrometers.
94GF Score

Get the complete analysis for WAR:SON

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

zł13.80
Price
zł18.06
GF Value