Koito Manufacturing Co (TSE:7276) E10: 円168.26 (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:7276 Koito Manufacturing Co Ltd TSE:7276
89 GF Score
Price 円2,460.50
GF Value 円2,509.96
Valuation Fairly Valued
! 2 Warning Signs
View Full Analysis

What is Koito Manufacturing Co E10?

Koito Manufacturing Co TSE:7276 -1.62% 89 E10 is 円168.26 as of Mar. 2026. GuruFocus rates TSE:7276 with a GF Score™ of 89/100 and a GF Value™ of 円2,509.96 (Fairly Valued). 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.

Koito Manufacturing Co's adjusted earnings per share data for the three months ended in Mar. 2026 was 円-22.930. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円168.26 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Koito Manufacturing Co's average E10 Growth Rate was -4.50% per year. During the past 3 years, the average E10 Growth Rate was 2.30% per year. During the past 5 years, the average E10 Growth Rate was 4.40% 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 Koito Manufacturing Co was 21.30% per year. The lowest was 2.30% per year. And the median was 6.20% per year.

As of today (2026-07-25), Koito Manufacturing Co's current stock price is 円2460.50. Koito Manufacturing Co's E10 for the quarter that ended in Mar. 2026 was 円168.26. Koito Manufacturing Co's Shiller PE Ratio of today is 14.62.

During the past 13 years, the highest Shiller PE Ratio of Koito Manufacturing Co was 51.12. The lowest was 9.45. And the median was 17.27.


Koito Manufacturing Co  (TSE:7276) 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.

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

Shiller PE Ratio=Share Price/E10
=2460.50/168.26
=14.62

* 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 Koito Manufacturing Co was 51.12. The lowest was 9.45. And the median was 17.27.


Be Aware

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


Koito Manufacturing Co E10 Related Terms


Koito Manufacturing Co E10 Historical Data

* Premium members only.

The historical data trend for Koito Manufacturing 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.

Koito Manufacturing Co E10 Chart

Koito Manufacturing Co 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 148.75 157.13 167.09 176.22 168.26

Koito Manufacturing 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 176.22 179.48 176.85 176.96 168.26

TSE:7276 vs ORLY, AZO: E10 Comparison

For the Auto Parts subindustry, Koito Manufacturing 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.


Koito Manufacturing Co Shiller PE Ratio vs Vehicles & Parts Industry

For the Vehicles & Parts industry and Consumer Cyclical sector, Koito Manufacturing Co's Shiller PE Ratio distribution charts can be found below:

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


TSE:7276
89GF Score
Koito Manufacturing Co Ltd TSE:7276
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Koito Manufacturing 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, Koito Manufacturing Co'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)
=-22.93/112.7000*112.7000
=-22.930

Current CPI (Mar. 2026) = 112.7000.

Koito Manufacturing Co Quarterly Data

per share eps CPI Adj_EPS
201606 31.110 98.100 35.740
201609 40.205 98.000 46.236
201612 52.905 98.400 60.593
201703 52.110 98.100 59.865
201706 45.410 98.500 51.956
201709 45.265 98.800 51.633
201712 57.100 99.400 64.740
201803 111.585 99.200 126.770
201806 48.915 99.200 55.572
201809 54.190 99.900 61.133
201812 55.515 99.700 62.754
201903 68.065 99.700 76.940
201906 43.410 99.800 49.021
201909 47.130 100.100 53.062
201912 45.025 100.500 50.491
202003 44.870 100.300 50.417
202006 -15.360 99.900 -17.328
202009 35.332 99.900 39.859
202012 48.010 99.300 54.489
202103 48.985 99.900 55.261
202106 33.130 99.500 37.525
202109 16.520 100.100 18.599
202112 35.760 100.100 40.261
202203 33.820 101.100 37.700
202206 -3.290 101.800 -3.642
202209 25.143 103.100 27.484
202212 45.520 104.100 49.281
202303 24.870 104.400 26.847
202306 45.560 105.200 48.808
202309 35.190 106.200 37.344
202312 36.310 106.800 38.316
202403 13.840 107.200 14.550
202406 23.860 108.200 24.852
202409 13.430 108.900 13.899
202412 60.440 110.700 61.532
202503 58.740 111.100 59.586
202506 35.710 111.700 36.030
202509 6.360 112.000 6.400
202512 41.080 113.000 40.971
202603 -22.930 112.700 -22.930

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168.26 mean?
Koito Manufacturing Co (TSE:7276) has a E10 of 円168.26 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Koito Manufacturing Co and its competitors.
Is Koito Manufacturing Co's E10 too high?
Koito Manufacturing Co's current E10 is 円168.26. Overall, Koito Manufacturing Co has a GF Score™ of 89/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Koito Manufacturing Co's E10 compare to ORLY and AZO?
Koito Manufacturing Co's E10 of 円168.26 can be compared against companies in the Vehicles & Parts 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 Vehicles & Parts company?
A good E10 depends on the Vehicles & Parts 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 Koito Manufacturing Co and its competitors. Koito Manufacturing Co's current E10 is 円168.26. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Koito Manufacturing Co stock overvalued right now?
Based on GuruFocus' analysis, Koito Manufacturing Co (TSE:7276) is currently considered Fairly Valued. The stock's GF Value™ is 円2,509.96, compared to a current price of 円2,460.50 — trading 2% below its estimated fair value. The current E10 is 円168.26. Koito Manufacturing Co's overall GF Score™ is 89/100 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 Koito Manufacturing Co (TSE:7276), the current E10 is 円168.26 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 Koito Manufacturing Co (TSE:7276) Overvalued in 2026?

Based on GuruFocus' analysis, Koito Manufacturing Co stock appears to be undervalued. The current stock price of 円2,460.50 is trading 2% below its estimated GF Value™ of 円2,509.96. GuruFocus considers Koito Manufacturing Co to be Fairly Valued.

Key valuation signals for TSE:7276:

  • E10: 円168.26
  • GF Value™: 円2,509.96 vs. price of 円2,460.50 (2% below fair value)
  • GF Score™: 89/100 with 2 warning signs

No single metric tells the full story. See the TSE:7276 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Koito Manufacturing Co Business Description

Other Exchanges KOTMY:USA8K7:Germany
Address 5-1-18 Kitashinagawa, Sumitomo Fudosan Osaki Twin Building East Wing, Shinagawa-ku, Tokyo, JPN, 141-0001
Koito Manufacturing Co Ltd mainly produces automotive lighting equipment for domestic and international markets and supplies products globally. The company operates through six geographical segments: Japan, North America, China, Asia, Europe, and Other. In addition to automotive lighting, it also manufactures and sells railroad vehicle control equipment, aircraft parts, and railroad vehicle seats.
89GF Score

Get the complete analysis for TSE:7276

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

円2,460.50
Price
円2,509.96
GF Value