Onamba Co (TSE:5816) E10: 円96.16 (As of Dec. 2025)

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:5816 Onamba Co Ltd TSE:5816
71 GF Score
Price 円1,569.00
GF Value 円1,004.35
Valuation Significantly Overvalued
! 2 Warning Signs
View Full Analysis

What is Onamba Co E10?

Onamba Co TSE:5816 +2.42% 71 E10 is 円96.16 as of Dec. 2025. GuruFocus rates TSE:5816 with a GF Score™ of 71/100 and a GF Value™ of 円1,004.35 (Significantly Overvalued). 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.

Onamba Co's adjusted earnings per share data for the three months ended in Dec. 2025 was 円33.290. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円96.16 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Onamba Co's average E10 Growth Rate was 13.00% per year. During the past 3 years, the average E10 Growth Rate was 16.90% per year. During the past 5 years, the average E10 Growth Rate was 22.70% 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 Onamba Co was 29.60% per year. The lowest was 1.40% per year. And the median was 16.90% per year.

As of today (2026-07-22), Onamba Co's current stock price is 円1569.00. Onamba Co's E10 for the quarter that ended in Dec. 2025 was 円96.16. Onamba Co's Shiller PE Ratio of today is 16.32.

During the past 13 years, the highest Shiller PE Ratio of Onamba Co was 22.07. The lowest was 5.68. And the median was 11.94.


Onamba Co  (TSE:5816) 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.

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

Shiller PE Ratio=Share Price/E10
=1569.00/96.16
=16.32

* 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 Onamba Co was 22.07. The lowest was 5.68. And the median was 11.94.


Be Aware

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


Onamba Co E10 Related Terms


Onamba Co E10 Historical Data

* Premium members only.

The historical data trend for Onamba 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.

Onamba Co E10 Chart

Onamba 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 39.15 60.26 68.28 85.13 96.16

Onamba 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 87.19 90.41 94.51 96.16 0.00

TSE:5816 vs VRT, BE: E10 Comparison

For the Electrical Equipment & Parts subindustry, Onamba 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.


Onamba Co Shiller PE Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Onamba Co's Shiller PE Ratio distribution charts can be found below:

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


TSE:5816
71GF Score
Onamba Co Ltd TSE:5816
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Onamba 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, Onamba 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)
=33.29/113.0000*113.0000
=33.290

Current CPI (Dec. 2025) = 113.0000.

Onamba Co Quarterly Data

per share eps CPI Adj_EPS
201603 -2.700 97.900 -3.116
201606 5.685 98.100 6.548
201609 -4.410 98.000 -5.085
201612 -27.614 98.400 -31.711
201703 0.420 98.100 0.484
201706 3.429 98.500 3.934
201709 12.849 98.800 14.696
201712 14.896 99.400 16.934
201803 -9.020 99.200 -10.275
201806 15.109 99.200 17.211
201809 18.430 99.900 20.847
201812 11.350 99.700 12.864
201903 9.410 99.700 10.665
201906 -5.740 99.800 -6.499
201909 25.328 100.100 28.592
201912 11.520 100.500 12.953
202003 4.540 100.300 5.115
202006 0.510 99.900 0.577
202009 13.467 99.900 15.233
202012 24.510 99.300 27.892
202103 42.980 99.900 48.616
202106 22.165 99.500 25.172
202109 3.728 100.100 4.208
202112 14.620 100.100 16.504
202203 24.380 101.100 27.250
202206 37.790 101.800 41.948
202209 34.550 103.100 37.868
202212 78.367 104.100 85.067
202303 43.140 104.400 46.694
202306 48.730 105.200 52.343
202309 42.190 106.200 44.891
202312 28.776 106.800 30.447
202403 28.420 107.200 29.958
202406 129.266 108.200 135.001
202409 14.320 108.900 14.859
202412 56.410 110.700 57.582
202503 25.880 111.100 26.323
202506 22.950 111.700 23.217
202509 42.170 112.000 42.547
202512 33.290 113.000 33.290

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96.16 mean?
Onamba Co (TSE:5816) has a E10 of 円96.16 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Onamba Co and its competitors.
Is Onamba Co's E10 too high?
Onamba Co's current E10 is 円96.16. Overall, Onamba Co has a GF Score™ of 71/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Onamba Co's E10 compare to VRT and BE?
Onamba Co's E10 of 円96.16 can be compared against companies in the Industrial Products 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 an Industrial Products company?
A good E10 depends on the Industrial Products 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 Onamba Co and its competitors. Onamba Co's current E10 is 円96.16. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Onamba Co stock overvalued right now?
Based on GuruFocus' analysis, Onamba Co (TSE:5816) is currently considered Significantly Overvalued. The stock's GF Value™ is 円1,004.35, compared to a current price of 円1,569.00 — trading 56.2% above its estimated fair value. The current E10 is 円96.16. Onamba Co's overall GF Score™ is 71/100 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 Onamba Co (TSE:5816), the current E10 is 円96.16 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 Onamba Co (TSE:5816) Overvalued in 2026?

Based on GuruFocus' analysis, Onamba Co stock appears to be overvalued. The current stock price of 円1,569.00 is trading 56.2% above its estimated GF Value™ of 円1,004.35. GuruFocus considers Onamba Co to be Significantly Overvalued.

Key valuation signals for TSE:5816:

  • E10: 円96.16
  • GF Value™: 円1,004.35 vs. price of 円1,569.00 (56.2% above fair value)
  • GF Score™: 71/100 with 2 warning signs

No single metric tells the full story. See the TSE:5816 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Onamba Co Business Description

Address 4-1-2 Minami-Kyuhouji-cho, Chuo-ku, Osaka-shi, Osaka, JPN, 5370001
Onamba Co Ltd is a Japan-based company engages in the manufacture and sale of parts used for consumer electronic equipment, information office equipment, and industrial electronic equipment, and general-purpose electric wires, communication cables, and related businesses.
71GF Score

Get the complete analysis for TSE:5816

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

円1,569.00
Price
円1,004.35
GF Value