KT (STU:KTC) E10: €1.29 (As of Mar. 2026)


STU:KTC KT Corp STU:KTC
75 GF Score
Price €15.40
GF Value €14.09
Valuation Fairly Valued
! 2 Warning Signs
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What is KT E10?

KT STU:KTC -1.28% 75 E10 is €1.29 as of Mar. 2026. GuruFocus rates STU:KTC with a GF Score™ of 75/100 and a GF Value™ of €14.09 (Fairly Valued). The stock has 2 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.

KT's adjusted earnings per share data for the three months ended in Mar. 2026 was €0.423. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €1.29 for the trailing ten years ended in Mar. 2026.

During the past 12 months, KT's average E10 Growth Rate was 15.30% per year. During the past 3 years, the average E10 Growth Rate was 19.60% per year. During the past 5 years, the average E10 Growth Rate was 9.40% 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 KT was 19.60% per year. The lowest was -15.20% per year. And the median was -1.70% per year.

As of today (2026-06-29), KT's current stock price is €15.40. KT's E10 for the quarter that ended in Mar. 2026 was €1.29. KT's Shiller PE Ratio of today is 11.94.

During the past 13 years, the highest Shiller PE Ratio of KT was 16.74. The lowest was 7.41. And the median was 12.30.


KT  (STU:KTC) 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.

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

Shiller PE Ratio=Share Price/E10
=15.40/1.29
=11.94

* 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 KT was 16.74. The lowest was 7.41. And the median was 12.30.


Be Aware

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


KT E10 Related Terms


KT E10 Historical Data

* Premium members only.

The historical data trend for KT'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.

KT E10 Chart

KT 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 0.89 0.90 0.88 1.00 1.25

KT 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 1.19 1.23 1.37 1.25 1.29

STU:KTC vs TMUS, VZ, T: E10 Comparison

For the Telecom Services subindustry, KT'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.


KT Shiller PE Ratio vs Telecommunication Services Industry

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

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


STU:KTC
75GF Score
KT Corp STU:KTC
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

KT 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, KT'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)
=0.423/125.2360*125.2360
=0.423

Current CPI (Mar. 2026) = 125.2360.

KT Quarterly Data

per share eps CPI Adj_EPS
201509 0.169 100.111 0.211
201512 -0.202 100.220 -0.252
201603 0.289 100.561 0.360
201606 0.359 100.791 0.446
201609 0.347 101.461 0.428
201612 0.192 101.561 0.237
201706 0.357 102.611 0.436
201712 0.000 102.991 0.000
201806 0.400 104.130 0.481
201809 0.348 105.651 0.413
201812 -0.040 104.351 -0.048
201903 0.369 104.491 0.442
201906 0.267 104.881 0.319
201909 0.294 105.200 0.350
201912 0.079 105.121 0.094
202003 0.316 105.354 0.376
202006 0.267 105.112 0.318
202009 0.299 106.198 0.353
202012 0.169 105.765 0.200
202103 0.473 107.357 0.552
202106 0.534 107.579 0.622
202109 0.479 108.759 0.552
202112 0.640 109.676 0.731
202203 0.646 111.848 0.723
202206 0.491 114.072 0.539
202209 0.446 114.715 0.487
202212 0.331 115.179 0.360
202303 0.414 116.507 0.445
202306 0.561 117.182 0.600
202309 0.373 118.964 0.393
202312 0.078 118.837 0.082
202403 0.526 120.123 0.548
202406 0.538 120.007 0.561
202409 0.491 120.861 0.509
202412 -0.840 121.135 -0.868
202503 0.696 122.590 0.711
202506 0.895 122.611 0.914
202509 0.495 123.402 0.502
202512 0.125 123.939 0.126
202603 0.423 125.236 0.423

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 €1.29 mean?
KT (STU:KTC) has a E10 of €1.29 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on KT and its competitors.
Is KT's E10 too high?
KT's current E10 is €1.29. Overall, KT has a GF Score™ of 75/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does KT's E10 compare to TMUS and VZ?
KT's E10 of €1.29 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 KT and its competitors. KT's current E10 is €1.29. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is KT stock overvalued right now?
Based on GuruFocus' analysis, KT (STU:KTC) is currently considered Fairly Valued. The stock's GF Value™ is €14.09, compared to a current price of €15.40 — trading 9.3% above its estimated fair value. The current E10 is €1.29. KT's overall GF Score™ is 75/100 with 2 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 KT (STU:KTC), the current E10 is €1.29 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 KT (STU:KTC) Overvalued in 2026?

Based on GuruFocus' analysis, KT stock appears to be overvalued. The current stock price of €15.40 is trading 9.3% above its estimated GF Value™ of €14.09. GuruFocus considers KT to be Fairly Valued.

Key valuation signals for STU:KTC:

  • E10: €1.29
  • GF Value™: €14.09 vs. price of €15.40 (9.3% above fair value)
  • GF Score™: 75/100 with 2 warning signs

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


KT Business Description

Address 33, Jong-ro 3-Gil, Jongno-gu, KT Gwanghwamun Building East, Gyeonggi-do, Seoul, KOR, 03155
KT is South Korea's largest fixed-line telecom operator, with around 11.5 million fixed-line broadband customers and 9.5 million IPTV customers, and is the second-largest wireless operator with 28 million subscribers. Additionally, it has a number of nontelecom businesses, including real estate, payment processing, artificial intelligence, and IDC/cloud services, many of which are the focus of its growth strategy. The company was formed from the previously government-owned, monopoly telecom business and was listed in 1998. After selling its mobile business in 1994 (forming its mobile competitor, SK Telecom), KT created its own mobile operator in 1997.
75GF Score

Get the complete analysis for STU:KTC

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

€15.40
Price
€14.09
GF Value