Inpex (IPXHF) Cyclically Adjusted Book per Share: $17.74 (As of Jun. 2026)

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Director of Data and Quant Analytics at GuruFocus
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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.

IPXHF Inpex Corp IPXHF
78 GF Score
Price $21.30
GF Value $13.09
Valuation Significantly Overvalued
! 2 Warning Signs
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What is Inpex Cyclically Adjusted Book per Share?

Inpex IPXHF 78 Cyclically Adjusted Book per Share is $17.74 as of Jun. 2026. GuruFocus rates IPXHF with a GF Score™ of 78/100 and a GF Value™ of $13.09 (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 PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and 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.

Inpex's adjusted book value per share for the three months ended in Jun. 2026 was $27.308. 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 $17.74 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Inpex's average Cyclically Adjusted Book Growth Rate was 8.30% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 8.90% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 8.50% 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 Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Inpex was 9.60% per year. The lowest was 3.30% per year. And the median was 7.40% per year.

As of today (2026-08-17), Inpex's current stock price is $21.30. Inpex's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was $17.74. Inpex's Cyclically Adjusted PB Ratio of today is 1.20.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Inpex was 1.74. The lowest was 0.26. And the median was 0.69.


Inpex  (OTCPK:IPXHF) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

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.

Inpex's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=21.30/17.74
=1.20

* 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 Cyclically Adjusted PB Ratio of Inpex was 1.74. The lowest was 0.26. And the median was 0.69.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Inpex Cyclically Adjusted Book per Share Related Terms


Inpex Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Inpex's Cyclically Adjusted Book per Share 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.

Inpex Cyclically Adjusted Book per Share Chart

Inpex Annual Data
Trend Mar16 Mar17 Mar18 Mar19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 15.83 16.73 16.49 18.44 14.26

Inpex Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted Book per Share 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 18.02 20.07 14.26 17.94 17.74

IPXHF vs COP, EOG, FANG: Cyclically Adjusted Book per Share Comparison

For the Oil & Gas E&P subindustry, Inpex'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.


Inpex Cyclically Adjusted PB Ratio vs Oil & Gas Industry

For the Oil & Gas industry and Energy sector, Inpex's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


IPXHF
78GF Score
Inpex Corp IPXHF
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Inpex Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and 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.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get 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.

For example, Inpex'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)
=27.308/113.6000*113.6000
=27.308

Current CPI (Jun. 2026) = 113.6000.

Inpex Quarterly Data

Book Value per Share CPI Adj_Book
201609 18.526 98.000 21.475
201612 17.190 98.400 19.845
201703 17.848 98.100 20.668
201706 18.071 98.500 20.841
201709 18.229 98.800 20.960
201712 18.072 99.400 20.654
201803 18.834 99.200 21.568
201806 18.327 99.200 20.987
201809 18.492 99.900 21.028
201812 18.299 99.700 20.850
201903 18.525 99.700 21.108
201906 18.708 99.800 21.295
201909 18.867 100.100 21.412
201912 19.087 100.500 21.575
202003 18.993 100.300 21.512
202006 17.837 99.900 20.283
202009 17.898 99.900 20.352
202012 18.056 99.300 20.656
202103 18.411 99.900 20.936
202106 18.217 99.500 20.799
202109 18.825 100.100 21.364
202112 19.794 100.100 22.464
202203 21.577 101.100 24.245
202206 21.465 101.800 23.953
202209 20.410 103.100 22.489
202212 21.330 104.100 23.277
202303 22.327 104.400 24.295
202306 23.114 105.200 24.960
202309 22.672 106.200 24.252
202312 23.234 106.800 24.713
202403 24.223 107.200 25.669
202406 25.014 108.200 26.262
202409 24.723 108.900 25.790
202412 26.176 110.700 26.862
202503 25.939 111.100 26.523
202506 26.510 111.700 26.961
202509 25.578 112.000 25.943
202512 26.126 113.000 26.265
202603 26.515 112.700 26.727
202606 27.308 113.600 27.308

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

What does a Cyclically Adjusted Book per Share of $17.74 mean?
Inpex (IPXHF) has a Cyclically Adjusted Book per Share of $17.74 as of Jun. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Inpex and its competitors.
Is Inpex's Cyclically Adjusted Book per Share too high?
Inpex's current Cyclically Adjusted Book per Share is $17.74. Overall, Inpex has a GF Score™ of 78/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Inpex's Cyclically Adjusted Book per Share compare to COP and EOG?
Inpex's Cyclically Adjusted Book per Share of $17.74 can be compared against companies in the Oil & Gas industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for an Oil & Gas company?
A good Cyclically Adjusted Book per Share depends on the Oil & Gas industry context. However, Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Inpex and its competitors. Inpex's current Cyclically Adjusted Book per Share is $17.74. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Inpex stock overvalued right now?
Based on GuruFocus' analysis, Inpex (IPXHF) is currently considered Significantly Overvalued. The stock's GF Value™ is $13.09, compared to a current price of $21.30 — trading 62.7% above its estimated fair value. The current Cyclically Adjusted Book per Share is $17.74. Inpex's overall GF Score™ is 78/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Inpex (IPXHF), the current Cyclically Adjusted Book per Share is $17.74 as of Jun. 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 Inpex (IPXHF) Overvalued in 2026?

Based on GuruFocus' analysis, Inpex stock appears to be overvalued. The current stock price of $21.30 is trading 62.7% above its estimated GF Value™ of $13.09. GuruFocus considers Inpex to be Significantly Overvalued.

Key valuation signals for IPXHF:

  • Cyclically Adjusted Book per Share: $17.74
  • GF Value™: $13.09 vs. price of $21.30 (62.7% above fair value)
  • GF Score™: 78/100 with 2 warning signs

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


Inpex Business Description

Industry EnergyOil & Gas
Address 3-1 Akasaka 5-chome, Akasaka Biz Tower, Minato-ku, Tokyo, JPN, 107-6332
Headquartered in Tokyo, Inpex was founded in 2008 through a merger with Teikoku Oil. The precursor Inpex began life in 1966 as North Sumatra Offshore Petroleum Exploration and discovered the Attaka field in Indonesia in 1970 before acquiring the ADMA Block offshore the United Arab Emirates in 1973 and then discovering the Kashagan oilfield in Kazakhstan and Ichthys and Abadi gasfields in the Timor Sea in 2000. Teikoku Oil was founded in 1941 as a semigovernment entity and discovered Japan's largest natural gas reserves in Minami-Nagaoka in 1979. Inpex is Japan's largest hydrocarbon producer, with oil and gas projects across multiple continents. It produces around 230 million barrels of oil equivalent per year and has 6.2 billion barrels of oil equivalent in proven and probable reserves.
78GF Score

Get the complete analysis for IPXHF

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

$21.30
Price
$13.09
GF Value