TalkPool AG (OSTO:TALK) E10: kr-0.98 (As of Mar. 2026)

Author: Vera Yuan Vera Yuan
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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.

OSTO:TALK TalkPool AG OSTO:TALK
60 GF Score
Price kr15.40
GF Value kr7.27
Valuation Significantly Overvalued
! 4 Warning Signs
View Full Analysis

What is TalkPool AG E10?

TalkPool AG OSTO:TALK 60 E10 is kr-0.98 as of Mar. 2026. GuruFocus rates OSTO:TALK with a GF Score™ of 60/100 and a GF Value™ of kr7.27 (Significantly Overvalued). The stock has 4 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.

TalkPool AG's adjusted earnings per share data for the three months ended in Mar. 2026 was kr0.108. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is kr-0.98 for the trailing ten years ended in Mar. 2026.

During the past 12 months, TalkPool AG's average E10 Growth Rate was -163.20% 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.

As of today (2026-08-03), TalkPool AG's current stock price is kr15.40. TalkPool AG's E10 for the quarter that ended in Mar. 2026 was kr-0.98. TalkPool AG's Shiller PE Ratio of today is .

During the past 12 years, the highest Shiller PE Ratio of TalkPool AG was 15.15. The lowest was 4.14. And the median was 9.64.


TalkPool AG  (OSTO:TALK) 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 TalkPool AG was 15.15. The lowest was 4.14. And the median was 9.64.


Be Aware

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


TalkPool AG E10 Related Terms


TalkPool AG E10 Historical Data

* Premium members only.

The historical data trend for TalkPool AG'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.

TalkPool AG E10 Chart

TalkPool AG 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 0.00 0.00 0.00 1.52 -0.83

TalkPool AG 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 1.55 1.28 0.97 -0.83 -0.98

OSTO:TALK vs VZ, TMUS, T: E10 Comparison

For the Telecom Services subindustry, TalkPool AG'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.


TalkPool AG Shiller PE Ratio vs Telecommunication Services Industry

For the Telecommunication Services industry and Communication Services sector, TalkPool AG's Shiller PE Ratio distribution charts can be found below:

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


OSTO:TALK
60GF Score
TalkPool AG OSTO:TALK
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

TalkPool AG 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, TalkPool AG'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)
=0.108/108.0600*108.0600
=0.108

Current CPI (Mar. 2026) = 108.0600.

TalkPool AG Quarterly Data

per share eps CPI Adj_EPS
201606 -0.247 100.088 -0.267
201609 -1.628 99.604 -1.766
201612 -0.388 99.380 -0.422
201703 -0.667 100.040 -0.720
201706 -0.488 100.285 -0.526
201709 0.286 100.254 0.308
201712 0.000 100.213 0.000
201803 0.305 100.836 0.327
201806 -0.040 101.435 -0.043
201809 -0.626 101.246 -0.668
201812 -1.438 100.906 -1.540
201903 -0.840 101.571 -0.894
201906 -1.595 102.044 -1.689
201909 -0.855 101.396 -0.911
201912 -3.878 101.063 -4.146
202003 -1.196 101.048 -1.279
202006 -0.524 100.743 -0.562
202009 0.104 100.585 0.112
202012 -0.610 100.241 -0.658
202103 -0.610 100.800 -0.654
202106 -0.101 101.352 -0.108
202109 0.203 101.533 0.216
202112 -0.260 101.776 -0.276
202203 -0.316 103.205 -0.331
202206 0.106 104.783 0.109
202209 -0.216 104.835 -0.223
202212 2.398 104.666 2.476
202303 0.449 106.245 0.457
202306 0.233 106.576 0.236
202309 0.592 106.570 0.600
202312 0.336 106.461 0.341
202403 0.226 107.355 0.227
202406 0.226 107.991 0.226
202409 0.227 107.468 0.228
202412 0.690 107.128 0.696
202503 0.548 107.722 0.550
202506 0.220 108.075 0.220
202509 0.550 107.710 0.552
202512 0.109 107.200 0.110
202603 0.108 108.060 0.108

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 kr-0.98 mean?
TalkPool AG (OSTO:TALK) has a E10 of kr-0.98 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on TalkPool AG and its competitors.
Is TalkPool AG's E10 too high?
TalkPool AG's current E10 is kr-0.98. Overall, TalkPool AG has a GF Score™ of 60/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does TalkPool AG's E10 compare to VZ and TMUS?
TalkPool AG's E10 of kr-0.98 can be compared against companies in the Telecommunication Services 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 Telecommunication Services company?
A good E10 depends on the Telecommunication Services 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 TalkPool AG and its competitors. TalkPool AG's current E10 is kr-0.98. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is TalkPool AG stock overvalued right now?
Based on GuruFocus' analysis, TalkPool AG (OSTO:TALK) is currently considered Significantly Overvalued. The stock's GF Value™ is kr7.27, compared to a current price of kr15.40 — trading 111.8% above its estimated fair value. The current E10 is kr-0.98. TalkPool AG's overall GF Score™ is 60/100 with 4 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 TalkPool AG (OSTO:TALK), the current E10 is kr-0.98 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 TalkPool AG (OSTO:TALK) Overvalued in 2026?

Based on GuruFocus' analysis, TalkPool AG stock appears to be overvalued. The current stock price of kr15.40 is trading 111.8% above its estimated GF Value™ of kr7.27. GuruFocus considers TalkPool AG to be Significantly Overvalued.

Key valuation signals for OSTO:TALK:

  • E10: kr-0.98
  • GF Value™: kr7.27 vs. price of kr15.40 (111.8% above fair value)
  • GF Score™: 60/100 with 4 warning signs

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


TalkPool AG Business Description

Other Exchanges TKPL:Germany
Address Gauggelistrasse 7, Chur, CHE, CH-7000
TalkPool AG specializes in the design, integration, management, and optimization of communication networks and solutions. The company has built large telecom networks in over 50 countries on all continents. It offers services for the complete communication network life cycle from planning and implementation of new networks to operation and optimization and finally repair and consulting.
60GF Score

Get the complete analysis for OSTO:TALK

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

kr15.40
Price
kr7.27
GF Value