Tosoh (TSE:4042) Cyclically Adjusted PB Ratio: 1.18 (As of Sep. 10, 2026) — 17% Below Median

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TSE:4042 Tosoh Corp TSE:4042
78 GF Score
Price 円2,581.00
GF Value 円2,209.09
Valuation Modestly Overvalued
! 6 Warning Signs
View Full Analysis

What is Tosoh Cyclically Adjusted PB Ratio?

Tosoh TSE:4042 -0.50% 78 Cyclically Adjusted PB Ratio is 1.18 as of Sep. 10, 2026, which is 17% below its 10-year median of 1.43. GuruFocus rates TSE:4042 with a GF Score™ of 78/100 and a GF Value™ of 円2,209.09 (Modestly Overvalued). The stock has 6 warning signs investors should review. Among 1,097 Chemicals companies, Tosoh ranks better than 61.62% on this metric.

As of today (2026-09-10), Tosoh's current share price is 円2581.00. Tosoh's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was 円2,182.88. Tosoh's Cyclically Adjusted PB Ratio for today is 1.18.

The historical rank and industry rank for Tosoh's Cyclically Adjusted PB Ratio or its related term are showing as below:

TSE:4042' s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.98   Med: 1.43   Max: 3.57
Current: 1.22

During the past years, Tosoh's highest Cyclically Adjusted PB Ratio was 3.57. The lowest was 0.98. And the median was 1.43.

TSE:4042's Cyclically Adjusted PB Ratio is ranked better than
61.62% of 1097 companies
in the Chemicals industry
Industry Median: 1.69 vs TSE:4042: 1.22

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Tosoh's adjusted book value per share data for the three months ended in Jun. 2026 was 円2,732.194. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is 円2,182.88 for the trailing ten years ended in Jun. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


Tosoh  (TSE:4042) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


Tosoh Cyclically Adjusted PB Ratio Related Terms


Tosoh Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Tosoh's Cyclically Adjusted PB Ratio 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.

Tosoh Cyclically Adjusted PB Ratio Chart

Tosoh Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1.37 1.17 1.19 1.05 1.09

Tosoh Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted PB Ratio 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 1.06 1.07 1.12 1.09 1.34

TSE:4042 vs DOW: Cyclically Adjusted PB Ratio Comparison

For the Chemicals subindustry, Tosoh's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB 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.


Tosoh Cyclically Adjusted PB Ratio vs Chemicals Industry

For the Chemicals industry and Basic Materials sector, Tosoh's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Tosoh's Cyclically Adjusted PB Ratio falls into.


TSE:4042
78GF Score
Tosoh Corp TSE:4042
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Tosoh Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

Tosoh's Cyclically Adjusted PB Ratio for today is calculated as

Cyclically Adjusted PB Ratio=Share Price/ Cyclically Adjusted Book per Share
=2581.00/2182.88
=1.18

* 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.

Tosoh's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, Tosoh's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=2732.194/113.6000*113.6000
=2,732.194

Current CPI (Jun. 2026) = 113.6000.

Tosoh Quarterly Data

Book Value per Share CPI Adj_Book
201609 1,095.655 98.000 1,270.065
201612 1,177.958 98.400 1,359.919
201703 1,273.677 98.100 1,474.921
201706 1,292.369 98.500 1,490.489
201709 1,378.857 98.800 1,585.406
201712 1,451.659 99.400 1,659.039
201803 1,512.554 99.200 1,732.118
201806 1,529.096 99.200 1,751.062
201809 1,608.172 99.900 1,828.712
201812 1,609.543 99.700 1,833.943
201903 1,666.378 99.700 1,898.702
201906 1,663.712 99.800 1,893.764
201909 1,711.669 100.100 1,942.513
201912 1,746.879 100.500 1,974.582
202003 1,748.019 100.300 1,979.810
202006 1,724.039 99.900 1,960.469
202009 1,767.611 99.900 2,010.016
202012 1,819.106 99.300 2,081.072
202103 1,935.524 99.900 2,200.956
202106 1,975.083 99.500 2,254.969
202109 2,062.345 100.100 2,340.483
202112 2,130.087 100.100 2,417.361
202203 2,228.395 101.100 2,503.914
202206 2,279.621 101.800 2,543.860
202209 2,344.421 103.100 2,583.184
202212 2,319.051 104.100 2,530.684
202303 2,321.440 104.400 2,526.011
202306 2,336.498 105.200 2,523.062
202309 2,408.017 106.200 2,575.807
202312 2,415.032 106.800 2,568.798
202403 2,495.355 107.200 2,644.331
202406 0.000 108.200 0.000
202409 2,558.543 108.900 2,668.967
202412 2,549.954 110.700 2,616.755
202503 2,596.817 111.100 2,655.251
202506 2,548.236 111.700 2,591.581
202509 2,565.916 112.000 2,602.572
202512 2,588.266 113.000 2,602.009
202603 2,701.576 112.700 2,723.150
202606 2,732.194 113.600 2,732.194

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

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.

What does a Cyclically Adjusted PB Ratio of 1.18 mean?
Tosoh (TSE:4042) has a Cyclically Adjusted PB Ratio of 1.18 as of Sep. 10, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Tosoh and its competitors. This is 17% below median its historical median of 1.43. Over the past decade, Tosoh's Cyclically Adjusted PB Ratio has ranged from 0.98 to 3.57. According to the industry distribution chart, Tosoh ranks #421 out of 1097 companies in the Chemicals industry, placing it in the top 38.4%.
Is Tosoh's Cyclically Adjusted PB Ratio too high?
Tosoh's current Cyclically Adjusted PB Ratio of 1.18 is 17% below median its 10-year median of 1.43. Over the past 10 years, this metric has ranged from a low of 0.98 to a high of 3.57. The Chemicals industry median Cyclically Adjusted PB Ratio is 1.69. Tosoh's value of 1.18 is 30.2% below this industry median. Based on the distribution chart, Tosoh ranks #421 out of 1097 companies in the Chemicals industry, which is above the industry midpoint. Overall, Tosoh has a GF Score™ of 78/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Tosoh's Cyclically Adjusted PB Ratio compare to DOW?
According to the Chemicals industry distribution chart, Tosoh ranks #421 out of 1097 companies for Cyclically Adjusted PB Ratio. This puts Tosoh in the upper half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.69. Tosoh's value of 1.18 is 30.2% below this benchmark. Historically, Tosoh's own Cyclically Adjusted PB Ratio has ranged from 0.98 to 3.57 over the past decade. While the company's 10-year median is 1.43 vs. the industry median of 1.69, Tosoh has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted PB Ratio for a Chemicals company?
The median Cyclically Adjusted PB Ratio among Chemicals companies is 1.69, based on 1,097 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Tosoh's current Cyclically Adjusted PB Ratio of 1.18 is 30.2% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Tosoh and its competitors. For the Chemicals industry, the median Cyclically Adjusted PB Ratio is 1.69 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Tosoh's current Cyclically Adjusted PB Ratio is 1.18, which is 17% below median its own 10-year median of 1.43. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tosoh stock overvalued right now?
Based on GuruFocus' analysis, Tosoh (TSE:4042) is currently considered Modestly Overvalued. The stock's GF Value™ is 円2,209.09, compared to a current price of 円2,581.00 — trading 16.8% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 1.18, which is 17% below median its 10-year median of 1.43 and 30.2% below the Chemicals industry median of 1.69. Tosoh's overall GF Score™ is 78/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Tosoh (TSE:4042), the current Cyclically Adjusted PB Ratio is 1.18 as of Sep. 10, 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 Tosoh (TSE:4042) Overvalued in 2026?

Based on GuruFocus' analysis, Tosoh stock appears to be overvalued. The current stock price of 円2,581.00 is trading 16.8% above its estimated GF Value™ of 円2,209.09. GuruFocus considers Tosoh to be Modestly Overvalued.

Key valuation signals for TSE:4042:

  • Cyclically Adjusted PB Ratio: 1.18 (17% below median its 10-year median of 1.43)
  • GF Value™: 円2,209.09 vs. price of 円2,581.00 (16.8% above fair value)
  • GF Score™: 78/100 with 6 warning signs
  • Industry Position: 30.2% below the Chemicals median (#421 of 1097)

No single metric tells the full story. See the TSE:4042 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Tosoh Business Description

Address 4560 Kaiseicho, Yamaguchi Prefecture, Shunan, JPN, 746-8501
Tosoh Corp manufactures and sells a variety of petrochemicals, plastics, and chemical-based products. The firm organizes itself into five segments. The Chlor-alkali segment produces caustic soda and vinyl chloride monomer. The Engineering segment handles manufacturing, sales, construction, repair, and water treatment equipment. The Functional Products segment covers inorganic and organic fine chemicals, diagnostic and metrology products, and electronic materials such as fused silica and sputtering targets. The Petrochemical segment includes olefins like ethylene and propylene, polyethylene products, and resins. The Others segment comprises transportation, warehousing, inspection, analysis, and information processing services. It generates majority of its revenue from Chlor-alkali segment.
78GF Score

Get the complete analysis for TSE:4042

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

円2,581.00
Price
円2,209.09
GF Value