KOTMF (Koito Manufacturing Co) E10: $1.11 (As of Mar. 2026)


KOTMF Koito Manufacturing Co Ltd KOTMF
88 GF Score
Price $16.05
GF Value $15.12
! 6 Warning Signs
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What is Koito Manufacturing Co E10?

Koito Manufacturing Co KOTMF +34.31% 88 E10 is $1.11 as of Mar. 2026. GuruFocus rates KOTMF with a GF Score™ of 88/100 and a GF Value™ of $15.12. The stock has 6 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 $-0.145. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is $1.11 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 (2026-06-26), Koito Manufacturing Co's current stock price is $16.05. Koito Manufacturing Co's E10 for the quarter that ended in Mar. 2026 was $1.11. Koito Manufacturing Co's Shiller PE Ratio of today is 14.46.

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 17.35.


Koito Manufacturing Co  (OTCPK:KOTMF) 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
=16.05/1.11
=14.46

* 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 17.35.


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 1.24 1.19 1.25 1.41 1.11

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 1.41 1.24 0.94 0.92 1.11

KOTMF 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.


KOTMF
88GF Score
Koito Manufacturing Co Ltd KOTMF
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
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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)
=-0.145/112.7000*112.7000
=-0.145

Current CPI (Mar. 2026) = 112.7000.

Koito Manufacturing Co Quarterly Data

per share eps CPI Adj_EPS
201606 0.295 98.100 0.339
201609 0.395 98.000 0.454
201612 0.456 98.400 0.522
201703 0.461 98.100 0.530
201706 0.409 98.500 0.468
201709 0.409 98.800 0.467
201712 0.506 99.400 0.574
201803 1.052 99.200 1.195
201806 0.444 99.200 0.504
201809 0.483 99.900 0.545
201812 0.495 99.700 0.560
201903 0.612 99.700 0.692
201906 0.402 99.800 0.454
201909 0.438 100.100 0.493
201912 0.413 100.500 0.463
202003 0.417 100.300 0.469
202006 -0.143 99.900 -0.161
202009 0.335 99.900 0.378
202012 0.463 99.300 0.525
202103 0.451 99.900 0.509
202106 0.301 99.500 0.341
202109 0.150 100.100 0.169
202112 0.314 100.100 0.354
202203 0.285 101.100 0.318
202206 -0.025 101.800 -0.028
202209 0.175 103.100 0.191
202212 0.337 104.100 0.365
202303 0.186 104.400 0.201
202306 0.322 105.200 0.345
202309 0.238 106.200 0.253
202312 0.252 106.800 0.266
202403 0.092 107.200 0.097
202406 0.151 108.200 0.157
202409 0.094 108.900 0.097
202412 0.393 110.700 0.400
202503 0.394 111.100 0.400
202506 0.247 111.700 0.249
202509 0.043 112.000 0.043
202512 0.263 113.000 0.262
202603 -0.145 112.700 -0.145

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 $1.11 mean?
Koito Manufacturing Co (KOTMF) has a E10 of $1.11 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 $1.11. Overall, Koito Manufacturing Co has a GF Score™ of 88/100, 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 $1.11 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 $1.11. 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?
Koito Manufacturing Co (KOTMF) has a current E10 of $1.11. The stock's GF Value™ is $15.12, compared to a current price of $16.05 — trading 6.2% above its estimated fair value. The current E10 is $1.11. Koito Manufacturing Co's overall GF Score™ is 88/100 with 6 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 (KOTMF), the current E10 is $1.11 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 (KOTMF) Overvalued in 2026?

Based on GuruFocus' analysis, Koito Manufacturing Co stock appears to be overvalued. The current stock price of $16.05 is trading 6.2% above its estimated GF Value™ of $15.12.

Key valuation signals for KOTMF:

  • E10: $1.11
  • GF Value™: $15.12 vs. price of $16.05 (6.2% above fair value)
  • GF Score™: 88/100 with 6 warning signs

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


Koito Manufacturing Co Business Description

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.
88GF Score

Get the complete analysis for KOTMF

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

$16.05
Price
$15.12
GF Value