RS Technologies Co (TSE:3445) E10: 円206.07 (As of Dec. 2025)


TSE:3445 RS Technologies Co Ltd TSE:3445
94 GF Score
Price 円7,000.00
GF Value 円4,512.62
Valuation Significantly Overvalued
! 5 Warning Signs
View Full Analysis

What is RS Technologies Co E10?

RS Technologies Co TSE:3445 +0.43% 94 E10 is 円206.07 as of Dec. 2025. GuruFocus rates TSE:3445 with a GF Score™ of 94/100 and a GF Value™ of 円4,512.62 (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.

RS Technologies Co's adjusted earnings per share data for the three months ended in Dec. 2025 was 円98.840. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円206.07 for the trailing ten years ended in Dec. 2025.

During the past 12 months, RS Technologies Co's average E10 Growth Rate was 22.00% 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 (2026-06-30), RS Technologies Co's current stock price is 円7000.00. RS Technologies Co's E10 for the quarter that ended in Dec. 2025 was 円206.07. RS Technologies Co's Shiller PE Ratio of today is 33.97.

During the past 12 years, the highest Shiller PE Ratio of RS Technologies Co was 37.12. The lowest was 13.79. And the median was 18.93.


RS Technologies Co  (TSE:3445) 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.

RS Technologies Co's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=7000.00/206.07
=33.97

* 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 12 years, the highest Shiller P/E Ratio of RS Technologies Co was 37.12. The lowest was 13.79. And the median was 18.93.


Be Aware

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


RS Technologies Co E10 Related Terms


RS Technologies Co E10 Historical Data

* Premium members only.

The historical data trend for RS Technologies Co'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.

RS Technologies Co E10 Chart

RS Technologies Co 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 0.00 168.85 206.07

RS Technologies Co 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 175.34 183.50 194.92 206.07 0.00

TSE:3445 vs NVDA, AVGO, MU: E10 Comparison

For the Semiconductors subindustry, RS Technologies Co'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.


RS Technologies Co Shiller PE Ratio vs Semiconductors Industry

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

* The bar in red indicates where RS Technologies Co's Shiller PE Ratio falls into.


TSE:3445
94GF Score
RS Technologies Co Ltd TSE:3445
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

RS Technologies Co 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, RS Technologies Co'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)
=98.84/113.0000*113.0000
=98.840

Current CPI (Dec. 2025) = 113.0000.

RS Technologies Co Quarterly Data

per share eps CPI Adj_EPS
201603 -1.740 97.900 -2.008
201606 4.760 98.100 5.483
201609 7.885 98.000 9.092
201612 27.965 98.400 32.114
201703 26.685 98.100 30.738
201706 20.945 98.500 24.028
201709 17.070 98.800 19.523
201712 26.265 99.400 29.859
201803 19.630 99.200 22.361
201806 38.305 99.200 43.634
201809 38.185 99.900 43.192
201812 46.115 99.700 52.267
201903 31.520 99.700 35.725
201906 34.705 99.800 39.295
201909 29.950 100.100 33.810
201912 20.085 100.500 22.583
202003 31.665 100.300 35.674
202006 32.880 99.900 37.192
202009 24.420 99.900 27.622
202012 18.720 99.300 21.303
202103 -20.915 99.900 -23.658
202106 45.300 99.500 51.446
202109 42.225 100.100 47.667
202112 58.960 100.100 66.558
202203 46.520 101.100 51.996
202206 79.750 101.800 88.524
202209 92.850 103.100 101.766
202212 73.630 104.100 79.925
202303 64.530 104.400 69.846
202306 75.900 105.200 81.528
202309 84.640 106.200 90.060
202312 65.940 106.800 69.768
202403 67.230 107.200 70.867
202406 77.370 108.200 80.802
202409 66.350 108.900 68.848
202412 145.280 110.700 148.298
202503 64.730 111.100 65.837
202506 78.470 111.700 79.383
202509 107.990 112.000 108.954
202512 98.840 113.000 98.840

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206.07 mean?
RS Technologies Co (TSE:3445) has a E10 of 円206.07 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on RS Technologies Co and its competitors.
Is RS Technologies Co's E10 too high?
RS Technologies Co's current E10 is 円206.07. Overall, RS Technologies Co has a GF Score™ of 94/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does RS Technologies Co's E10 compare to NVDA and AVGO?
RS Technologies Co's E10 of 円206.07 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 RS Technologies Co and its competitors. RS Technologies Co's current E10 is 円206.07. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is RS Technologies Co stock overvalued right now?
Based on GuruFocus' analysis, RS Technologies Co (TSE:3445) is currently considered Significantly Overvalued. The stock's GF Value™ is 円4,512.62, compared to a current price of 円7,000.00 — trading 55.1% above its estimated fair value. The current E10 is 円206.07. RS Technologies Co's overall GF Score™ is 94/100 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 RS Technologies Co (TSE:3445), the current E10 is 円206.07 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 RS Technologies Co (TSE:3445) Overvalued in 2026?

Based on GuruFocus' analysis, RS Technologies Co stock appears to be overvalued. The current stock price of 円7,000.00 is trading 55.1% above its estimated GF Value™ of 円4,512.62. GuruFocus considers RS Technologies Co to be Significantly Overvalued.

Key valuation signals for TSE:3445:

  • E10: 円206.07
  • GF Value™: 円4,512.62 vs. price of 円7,000.00 (55.1% above fair value)
  • GF Score™: 94/100 with 5 warning signs

No single metric tells the full story. See the TSE:3445 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


RS Technologies Co Business Description

Other Exchanges RSTCF:USA
Address 1-47-1 Oi, 17th Floor, NT Building, Shinagawa-ku, Tokyo, JPN, 140-0014
RS Technologies Co Ltd is a provider of wafer reclaim services for the semiconductor industry. Its engaged in the recycling of silicon wafer reclaim, silicon wafer oxide Film coating and a silicon wafer. It's segments include Wafer recycling business, Prime silicon wafer manufacturing and sales business, Semiconductor-related equipment and components and others. It provides services like Silicon Wafer Reclaim Service, Silicon Wafer Oxide Film Coating Service, Ultrasonic Image Systems, Solar power business and Technology Consulting.
94GF Score

Get the complete analysis for TSE:3445

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

円7,000.00
Price
円4,512.62
GF Value