SUMCO (TSE:3436) E10: 円117.81 (As of Dec. 2025)


TSE:3436 SUMCO Corp TSE:3436
61 GF Score
Price 円3,839.00
GF Value 円1,788.74
Valuation Significantly Overvalued
! 7 Warning Signs
View Full Analysis

What is SUMCO E10?

SUMCO TSE:3436 +0.55% 61 E10 is 円117.81 as of Dec. 2025. GuruFocus rates TSE:3436 with a GF Score™ of 61/100 and a GF Value™ of 円1,788.74 (Significantly Overvalued). 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.

SUMCO's adjusted earnings per share data for the three months ended in Dec. 2025 was 円-30.750. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円117.81 for the trailing ten years ended in Dec. 2025.

During the past 12 months, SUMCO's average E10 Growth Rate was -6.70% per year. During the past 3 years, the average E10 Growth Rate was 5.00% per year. During the past 5 years, the average E10 Growth Rate was 45.10% 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 SUMCO was 93.40% per year. The lowest was 5.00% per year. And the median was 41.80% per year.

As of today (2026-06-30), SUMCO's current stock price is 円3839.00. SUMCO's E10 for the quarter that ended in Dec. 2025 was 円117.81. SUMCO's Shiller PE Ratio of today is 32.59.

During the past 13 years, the highest Shiller PE Ratio of SUMCO was 775.23. The lowest was 6.88. And the median was 19.19.


SUMCO  (TSE:3436) 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.

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

Shiller PE Ratio=Share Price/E10
=3839.00/117.81
=32.59

* 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 SUMCO was 775.23. The lowest was 6.88. And the median was 19.19.


Be Aware

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


SUMCO E10 Related Terms


SUMCO E10 Historical Data

* Premium members only.

The historical data trend for SUMCO'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.

SUMCO E10 Chart

SUMCO 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 44.33 101.85 122.49 126.29 117.81

SUMCO 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 125.57 124.03 121.36 117.81 0.00

TSE:3436 vs AMAT, LRCX, KLAC: E10 Comparison

For the Semiconductor Equipment & Materials subindustry, SUMCO'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.


SUMCO Shiller PE Ratio vs Semiconductors Industry

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

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


TSE:3436
61GF Score
SUMCO Corp TSE:3436
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

SUMCO 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, SUMCO's adjusted earnings per share data for the three months ended in Dec. 2025 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=-30.75/113.0000*113.0000
=-30.750

Current CPI (Dec. 2025) = 113.0000.

SUMCO Quarterly Data

per share eps CPI Adj_EPS
201603 5.370 97.900 6.198
201606 2.493 98.100 2.872
201609 3.800 98.000 4.382
201612 10.790 98.400 12.391
201703 12.320 98.100 14.191
201706 20.530 98.500 23.552
201709 23.824 98.800 27.248
201712 35.440 99.400 40.289
201803 43.530 99.200 49.586
201806 52.459 99.200 59.757
201809 49.480 99.900 55.968
201812 54.270 99.700 61.510
201903 44.780 99.700 50.754
201906 33.570 99.800 38.010
201909 17.570 100.100 19.834
201912 16.980 100.500 19.092
202003 29.010 100.300 32.683
202006 28.610 99.900 32.362
202009 11.670 99.900 13.200
202012 18.188 99.300 20.697
202103 25.350 99.900 28.674
202106 31.010 99.500 35.217
202109 36.540 100.100 41.249
202112 40.384 100.100 45.588
202203 43.420 101.100 48.531
202206 46.040 101.800 51.105
202209 58.450 103.100 64.063
202212 52.578 104.100 57.073
202303 107.660 104.400 116.529
202306 34.124 105.200 36.654
202309 26.530 106.200 28.229
202312 14.147 106.800 14.968
202403 14.460 107.200 15.242
202406 21.610 108.200 22.569
202409 10.430 108.900 10.823
202412 10.340 110.700 10.555
202503 8.710 111.100 8.859
202506 0.100 111.700 0.101
202509 -11.660 112.000 -11.764
202512 -30.750 113.000 -30.750

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 円117.81 mean?
SUMCO (TSE:3436) has a E10 of 円117.81 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on SUMCO and its competitors.
Is SUMCO's E10 too high?
SUMCO's current E10 is 円117.81. Overall, SUMCO has a GF Score™ of 61/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does SUMCO's E10 compare to AMAT and LRCX?
SUMCO's E10 of 円117.81 can be compared against companies in the Semiconductors 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 Semiconductors company?
A good E10 depends on the Semiconductors 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 SUMCO and its competitors. SUMCO's current E10 is 円117.81. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is SUMCO stock overvalued right now?
Based on GuruFocus' analysis, SUMCO (TSE:3436) is currently considered Significantly Overvalued. The stock's GF Value™ is 円1,788.74, compared to a current price of 円3,839.00 — trading 114.6% above its estimated fair value. The current E10 is 円117.81. SUMCO's overall GF Score™ is 61/100 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 SUMCO (TSE:3436), the current E10 is 円117.81 as of Dec. 2025. 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 SUMCO (TSE:3436) Overvalued in 2026?

Based on GuruFocus' analysis, SUMCO stock appears to be overvalued. The current stock price of 円3,839.00 is trading 114.6% above its estimated GF Value™ of 円1,788.74. GuruFocus considers SUMCO to be Significantly Overvalued.

Key valuation signals for TSE:3436:

  • E10: 円117.81
  • GF Value™: 円1,788.74 vs. price of 円3,839.00 (114.6% above fair value)
  • GF Score™: 61/100 with 7 warning signs

No single metric tells the full story. See the TSE:3436 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


SUMCO Business Description

Address 1-2-1 Shibaura, Minato-ku, Tokyo, JPN, 105-8634
Founded in 1999 as a joint venture between Nippon Steel and two Mitsubishi entities, Sumco is the world's second-largest semiconductor-grade silicon wafer manufacturer, with an estimated 21% market share in 2025. Sumco is headquartered in Tokyo and operates seven production sites across Japan. It also maintains sales and support offices in Taiwan, the US, the UK, Indonesia, and Singapore. Sumco sells to most semiconductor manufacturers like TSMC, Intel, Samsung, and Micron. The firm employs over 9,700 people.
61GF Score

Get the complete analysis for TSE:3436

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

円3,839.00
Price
円1,788.74
GF Value