Nagahori (TSE:8139) E10: 円3.16 (As of Mar. 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
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.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
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.

TSE:8139 Nagahori Corp TSE:8139
70 GF Score
Price 円2,295.00
GF Value 円1,623.27
Valuation Significantly Overvalued
! 4 Warning Signs
View Full Analysis

What is Nagahori E10?

Nagahori TSE:8139 +5.13% 70 E10 is 円3.16 as of Mar. 2026. GuruFocus rates TSE:8139 with a GF Score™ of 70/100 and a GF Value™ of 円1,623.27 (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.

Nagahori's adjusted earnings per share data for the three months ended in Mar. 2026 was 円26.430. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円3.16 for the trailing ten years ended in Mar. 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 Nagahori was -16.40% per year. The lowest was -72.20% per year. And the median was -16.50% per year.

As of today (2026-09-02), Nagahori's current stock price is 円2295.00. Nagahori's E10 for the quarter that ended in Mar. 2026 was 円3.16. Nagahori's Shiller PE Ratio of today is 726.27.

During the past 13 years, the highest Shiller PE Ratio of Nagahori was 1990.91. The lowest was 159.85. And the median was 654.43.


Nagahori  (TSE:8139) 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.

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

Shiller PE Ratio=Share Price/E10
=2295.00/3.16
=726.27

* 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 Nagahori was 1990.91. The lowest was 159.85. And the median was 654.43.


Be Aware

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


Nagahori E10 Related Terms


Nagahori E10 Historical Data

* Premium members only.

The historical data trend for Nagahori'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.

Nagahori E10 Chart

Nagahori Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only -4.39 -5.46 -5.86 0.00 3.16

Nagahori Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 -5.80 -3.69 -0.82 3.16 0.00

TSE:8139 vs TPR: E10 Comparison

For the Luxury Goods subindustry, Nagahori'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.


Nagahori Shiller PE Ratio vs Retail - Cyclical Industry

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

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


TSE:8139
70GF Score
Nagahori Corp TSE:8139
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Nagahori 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, Nagahori'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)
=26.43/112.7000*112.7000
=26.430

Current CPI (Mar. 2026) = 112.7000.

Nagahori Quarterly Data

per share eps CPI Adj_EPS
201603 -52.690 97.900 -60.655
201606 -12.410 98.100 -14.257
201609 -0.381 98.000 -0.438
201612 9.299 98.400 10.650
201703 0.102 98.100 0.117
201706 -4.470 98.500 -5.114
201709 1.505 98.800 1.717
201712 7.510 99.400 8.515
201803 -0.833 99.200 -0.946
201806 -4.040 99.200 -4.590
201809 -1.241 99.900 -1.400
201812 4.216 99.700 4.766
201903 -7.650 99.700 -8.647
201906 -3.830 99.800 -4.325
201909 11.538 100.100 12.990
201912 -3.483 100.500 -3.906
202003 -11.050 100.300 -12.416
202006 -28.030 99.900 -31.621
202009 -2.460 99.900 -2.775
202012 8.433 99.300 9.571
202103 0.430 99.900 0.485
202106 -5.760 99.500 -6.524
202109 5.930 100.100 6.676
202112 7.260 100.100 8.174
202203 3.256 101.100 3.630
202206 -5.670 101.800 -6.277
202209 0.068 103.100 0.074
202212 3.124 104.100 3.382
202303 6.430 104.400 6.941
202306 0.190 105.200 0.204
202309 12.350 106.200 13.106
202312 13.125 106.800 13.850
202403 8.238 107.200 8.661
202406 3.060 108.200 3.187
202409 6.010 108.900 6.220
202503 0.000 111.100 0.000
202506 -2.250 111.700 -2.270
202509 16.070 112.000 16.170
202512 31.530 113.000 31.446
202603 26.430 112.700 26.430

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3.16 mean?
Nagahori (TSE:8139) has a E10 of 円3.16 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Nagahori and its competitors.
Is Nagahori's E10 too high?
Nagahori's current E10 is 円3.16. Overall, Nagahori has a GF Score™ of 70/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Nagahori's E10 compare to TPR?
Nagahori's E10 of 円3.16 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 Nagahori and its competitors. Nagahori's current E10 is 円3.16. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Nagahori stock overvalued right now?
Based on GuruFocus' analysis, Nagahori (TSE:8139) is currently considered Significantly Overvalued. The stock's GF Value™ is 円1,623.27, compared to a current price of 円2,295.00 — trading 41.4% above its estimated fair value. The current E10 is 円3.16. Nagahori's overall GF Score™ is 70/100 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 Nagahori (TSE:8139), the current E10 is 円3.16 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 Nagahori (TSE:8139) Overvalued in 2026?

Based on GuruFocus' analysis, Nagahori stock appears to be overvalued. The current stock price of 円2,295.00 is trading 41.4% above its estimated GF Value™ of 円1,623.27. GuruFocus considers Nagahori to be Significantly Overvalued.

Key valuation signals for TSE:8139:

  • E10: 円3.16
  • GF Value™: 円1,623.27 vs. price of 円2,295.00 (41.4% above fair value)
  • GF Score™: 70/100 with 4 warning signs

No single metric tells the full story. See the TSE:8139 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Nagahori Business Description

Address 1-15-3 Ueno, Taito-ku, Tokyo, JPN, 110-8546
Nagahori Corp is mainly engaged in the manufacturing, processing, import, and export of jewelry, pearls, and precious metals products in Japan. It provides rings, necklaces, earrings, bracelets, pendants, engagement rings, marriage rings, and other jewelry products, which are marketed under brands like Proponaire, Wisp, Disney, Scavia, Nadia, and others. The group's reportable segments are Jewelry Business, Building Rental Business, and Solar Power Generation Business. The majority of its revenue is generated from the Jewelry Business, which manufactures and sells jewelry. The Building Rental Business rents out its real estate holdings, and the Solar Power Generation Business sells electricity.
70GF Score

Get the complete analysis for TSE:8139

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

円2,295.00
Price
円1,623.27
GF Value