Ishiharangyo Kaisha (TSE:4028) E10: 円201.58 (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:4028 Ishihara Sangyo Kaisha Ltd TSE:4028
70 GF Score
Price 円2,984.00
GF Value 円1,814.18
Valuation Significantly Overvalued
! 2 Warning Signs
View Full Analysis

What is Ishiharangyo Kaisha E10?

Ishiharangyo Kaisha TSE:4028 +7.30% 70 E10 is 円201.58 as of Mar. 2026. GuruFocus rates TSE:4028 with a GF Score™ of 70/100 and a GF Value™ of 円1,814.18 (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.

Ishiharangyo Kaisha's adjusted earnings per share data for the three months ended in Mar. 2026 was 円183.710. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円201.58 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Ishiharangyo Kaisha's average E10 Growth Rate was 10.40% per year. During the past 3 years, the average E10 Growth Rate was 17.50% per year. During the past 5 years, the average E10 Growth Rate was 20.10% 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 Ishiharangyo Kaisha was 28.00% per year. The lowest was 10.70% per year. And the median was 16.85% per year.

As of today (2026-07-21), Ishiharangyo Kaisha's current stock price is 円2984.00. Ishiharangyo Kaisha's E10 for the quarter that ended in Mar. 2026 was 円201.58. Ishiharangyo Kaisha's Shiller PE Ratio of today is 14.80.

During the past 13 years, the highest Shiller PE Ratio of Ishiharangyo Kaisha was 42.53. The lowest was 5.87. And the median was 10.90.


Ishiharangyo Kaisha  (TSE:4028) 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.

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

Shiller PE Ratio=Share Price/E10
=2984.00/201.58
=14.80

* 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 Ishiharangyo Kaisha was 42.53. The lowest was 5.87. And the median was 10.90.


Be Aware

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


Ishiharangyo Kaisha E10 Related Terms


Ishiharangyo Kaisha E10 Historical Data

* Premium members only.

The historical data trend for Ishiharangyo Kaisha'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.

Ishiharangyo Kaisha E10 Chart

Ishiharangyo Kaisha 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 105.62 124.24 173.91 182.57 201.58

Ishiharangyo Kaisha 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 182.57 194.74 194.43 200.41 201.58

TSE:4028 vs LIN, SHW, ECL: E10 Comparison

For the Specialty Chemicals subindustry, Ishiharangyo Kaisha'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.


Ishiharangyo Kaisha Shiller PE Ratio vs Chemicals Industry

For the Chemicals industry and Basic Materials sector, Ishiharangyo Kaisha's Shiller PE Ratio distribution charts can be found below:

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


TSE:4028
70GF Score
Ishihara Sangyo Kaisha Ltd TSE:4028
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ishiharangyo Kaisha 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, Ishiharangyo Kaisha'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)
=183.71/112.7000*112.7000
=183.710

Current CPI (Mar. 2026) = 112.7000.

Ishiharangyo Kaisha Quarterly Data

per share eps CPI Adj_EPS
201606 -22.020 98.100 -25.297
201609 2.151 98.000 2.474
201612 44.790 98.400 51.299
201703 70.210 98.100 80.659
201706 23.260 98.500 26.613
201709 39.475 98.800 45.029
201712 5.053 99.400 5.729
201803 18.310 99.200 20.802
201806 47.820 99.200 54.328
201809 50.639 99.900 57.127
201812 8.582 99.700 9.701
201903 110.190 99.700 124.558
201906 12.070 99.800 13.630
201909 -0.340 100.100 -0.383
201912 -42.540 100.500 -47.704
202003 89.838 100.300 100.945
202006 10.780 99.900 12.161
202009 -39.789 99.900 -44.887
202012 -40.800 99.300 -46.306
202103 154.210 99.900 173.969
202106 60.940 99.500 69.025
202109 43.497 100.100 48.972
202112 14.880 100.100 16.753
202203 173.240 101.100 193.117
202206 86.720 101.800 96.005
202209 23.670 103.100 25.874
202212 -35.650 104.100 -38.595
202303 100.190 104.400 108.155
202306 130.700 105.200 140.018
202309 -32.460 106.200 -34.447
202312 -23.800 106.800 -25.115
202403 134.747 107.200 141.660
202406 75.240 108.200 78.369
202409 -56.210 108.900 -58.171
202412 28.050 110.700 28.557
202503 172.900 111.100 175.390
202506 124.050 111.700 125.161
202509 23.610 112.000 23.758
202512 103.410 113.000 103.135
202603 183.710 112.700 183.710

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201.58 mean?
Ishiharangyo Kaisha (TSE:4028) has a E10 of 円201.58 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Ishiharangyo Kaisha and its competitors.
Is Ishiharangyo Kaisha's E10 too high?
Ishiharangyo Kaisha's current E10 is 円201.58. Overall, Ishiharangyo Kaisha has a GF Score™ of 70/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Ishiharangyo Kaisha's E10 compare to LIN and SHW?
Ishiharangyo Kaisha's E10 of 円201.58 can be compared against companies in the Chemicals 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 Chemicals company?
A good E10 depends on the Chemicals 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 Ishiharangyo Kaisha and its competitors. Ishiharangyo Kaisha's current E10 is 円201.58. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ishiharangyo Kaisha stock overvalued right now?
Based on GuruFocus' analysis, Ishiharangyo Kaisha (TSE:4028) is currently considered Significantly Overvalued. The stock's GF Value™ is 円1,814.18, compared to a current price of 円2,984.00 — trading 64.5% above its estimated fair value. The current E10 is 円201.58. Ishiharangyo Kaisha's overall GF Score™ is 70/100 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 Ishiharangyo Kaisha (TSE:4028), the current E10 is 円201.58 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 Ishiharangyo Kaisha (TSE:4028) Overvalued in 2026?

Based on GuruFocus' analysis, Ishiharangyo Kaisha stock appears to be overvalued. The current stock price of 円2,984.00 is trading 64.5% above its estimated GF Value™ of 円1,814.18. GuruFocus considers Ishiharangyo Kaisha to be Significantly Overvalued.

Key valuation signals for TSE:4028:

  • E10: 円201.58
  • GF Value™: 円1,814.18 vs. price of 円2,984.00 (64.5% above fair value)
  • GF Score™: 70/100 with 2 warning signs

No single metric tells the full story. See the TSE:4028 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Ishiharangyo Kaisha Business Description

Address 3-15 Edobori 1-chome, Nishi-ku, Osaka, JPN, 550-0002
Ishihara Sangyo Kaisha Ltd is mainly engaged in the manufacturing and marketing of agricultural chemicals in Japan. The company's core business activities are categorized into three key segments - Inorganic Chemicals, Organic Chemicals, and Other Businesses. Its product line consists of titanium dioxide products, environmental products such as gypsum and iron oxide stably, pharmaceuticals, battery materials and organic intermediates. Its primary geographic markets are Japan, Asia, America, Europe, and other.
70GF Score

Get the complete analysis for TSE:4028

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

円2,984.00
Price
円1,814.18
GF Value