Kohsai Co (NGO:7878) E10: 円0.00 (As of Jan. 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.

NGO:7878 Kohsai Co Ltd NGO:7878
86 GF Score
Price 円1,345.00
GF Value 円1,581.86
Valuation Modestly Undervalued
! 1 Warning Sign
View Full Analysis

What is Kohsai Co E10?

Kohsai Co NGO:7878 86 E10 is 円0.00 as of Jan. 2026. GuruFocus rates NGO:7878 with a GF Score™ of 86/100 and a GF Value™ of 円1,581.86 (Modestly Undervalued). The stock has 1 warning sign investors should review.

Note: As E10 is a main component used to calculate Shiller PE Ratio. If the month end stock price for this stock is zero, result may not be accurate due to the exchange rate between different shares and the data will not be stored into our database. Selected historical data showed in the calculation sectione below is only for demostration purpose.

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.

Kohsai Co's adjusted earnings per share data for the three months ended in Jan. 2026 was 円25.140. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円0.00 for the trailing ten years ended in Jan. 2026.

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 Kohsai Co was 124.50% per year. The lowest was 54.00% per year. And the median was 89.25% per year.

As of today (2026-08-12), Kohsai Co's current stock price is 円1345.00. Kohsai Co's E10 for the quarter that ended in Jan. 2026 was 円0.00. Kohsai Co's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Kohsai Co was 2328.57. The lowest was 33.38. And the median was 214.49.


Kohsai Co  (NGO:7878) 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 13 years, the highest Shiller P/E Ratio of Kohsai Co was 2328.57. The lowest was 33.38. And the median was 214.49.


Be Aware

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


Kohsai Co E10 Related Terms


Kohsai Co E10 Historical Data

* Premium members only.

The historical data trend for Kohsai 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.

Kohsai Co E10 Chart

Kohsai Co Annual Data
Trend Jan17 Jan18 Jan19 Jan20 Jan21 Jan22 Jan23 Jan24 Jan25 Jan26
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

Kohsai Co Quarterly Data
Apr21 Jul21 Oct21 Jan22 Apr22 Jul22 Oct22 Jan23 Apr23 Jul23 Oct23 Jan24 Apr24 Jul24 Jan25 Apr25 Jul25 Oct25 Jan26 Apr26
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 0.00 0.00 0.00 0.00 0.00

NGO:7878 vs TPR: E10 Comparison

For the Luxury Goods subindustry, Kohsai 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.


Kohsai Co Shiller PE Ratio vs Retail - Cyclical Industry

For the Retail - Cyclical industry and Consumer Cyclical sector, Kohsai Co's Shiller PE Ratio distribution charts can be found below:

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


NGO:7878
86GF Score
Kohsai Co Ltd NGO:7878
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Kohsai 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, Kohsai Co's adjusted earnings per share data for the three months ended in Jan. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Jan. 2026 (Change)*Current CPI (Jan. 2026)
=25.14/112.9000*112.9000
=25.140

Current CPI (Jan. 2026) = 112.9000.

Kohsai Co Quarterly Data

per share eps CPI Adj_EPS
201601 -42.083 97.700 -48.630
201604 -4.400 98.100 -5.064
201607 3.619 97.900 4.173
201610 21.430 98.600 24.538
201701 12.423 98.200 14.283
201704 -1.903 98.500 -2.181
201707 6.496 98.300 7.461
201710 -27.645 98.800 -31.590
201801 -2.003 99.500 -2.273
201804 10.753 99.100 12.250
201807 9.539 99.200 10.856
201810 14.480 100.200 16.315
201901 22.822 99.700 25.844
201904 12.440 100.000 14.045
201907 10.838 99.800 12.261
201910 14.345 100.400 16.131
202001 21.140 100.500 23.748
202004 1.330 100.200 1.499
202007 -14.600 100.000 -16.483
202010 18.537 99.800 20.970
202101 11.095 99.800 12.551
202104 27.473 99.100 31.299
202107 10.810 99.700 12.241
202110 -4.645 99.900 -5.249
202201 -13.566 100.300 -15.270
202204 11.345 101.500 12.619
202207 14.806 102.300 16.340
202210 -13.344 103.700 -14.528
202301 5.730 104.700 6.179
202304 7.375 105.100 7.922
202307 9.778 105.700 10.444
202310 18.880 107.100 19.902
202401 25.435 106.900 26.863
202404 31.685 107.700 33.215
202407 21.215 108.600 22.055
202501 0.000 111.200 0.000
202504 25.470 111.500 25.790
202507 13.910 111.900 14.034
202510 9.230 112.800 9.238
202601 25.140 112.900 25.140

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0.00 mean?
Kohsai Co (NGO:7878) has a E10 of 円0.00 as of Jan. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Kohsai Co and its competitors.
Is Kohsai Co's E10 too high?
Kohsai Co's current E10 is 円0.00. Overall, Kohsai Co has a GF Score™ of 86/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Kohsai Co's E10 compare to TPR?
Kohsai Co's E10 of 円0.00 can be compared against companies in the Retail - Cyclical 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 Retail - Cyclical company?
A good E10 depends on the Retail - Cyclical 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 Kohsai Co and its competitors. Kohsai Co's current E10 is 円0.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Kohsai Co stock overvalued right now?
Based on GuruFocus' analysis, Kohsai Co (NGO:7878) is currently considered Modestly Undervalued. The stock's GF Value™ is 円1,581.86, compared to a current price of 円1,345.00 — trading 15% below its estimated fair value. The current E10 is 円0.00. Kohsai Co's overall GF Score™ is 86/100 with 1 warning sign 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 Kohsai Co (NGO:7878), the current E10 is 円0.00 as of Jan. 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 Kohsai Co (NGO:7878) Overvalued in 2026?

Based on GuruFocus' analysis, Kohsai Co stock appears to be undervalued. The current stock price of 円1,345.00 is trading 15% below its estimated GF Value™ of 円1,581.86. GuruFocus considers Kohsai Co to be Modestly Undervalued.

Key valuation signals for NGO:7878:

  • E10: 円0.00
  • GF Value™: 円1,581.86 vs. price of 円1,345.00 (15% below fair value)
  • GF Score™: 86/100 with 1 warning sign

No single metric tells the full story. See the NGO:7878 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Kohsai Co Business Description

Other Exchanges 7878:Japan
Address 3049 Ryuji, Yamanashi prefecture, Kai-shi, JPN, 400-0194
Kohsai Co Ltd engages in the jewelry business. The company manufactures and sells of jewelry, metal accessories, and jewelry parts. It also provides property, casualty, and life insurance services. Its products include clasps, rings, pierce/catches, earrings, and pendants, men's cuff, rings and others.
86GF Score

Get the complete analysis for NGO:7878

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

円1,345.00
Price
円1,581.86
GF Value