TGS ASA (STU:TGC) Cyclically Adjusted Book per Share: €10.62 (As of Jun. 2026)

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STU:TGC TGS ASA STU:TGC
74 GF Score
Price €11.64
GF Value €9.86
Valuation Modestly Overvalued
! 4 Warning Signs
View Full Analysis

What is TGS ASA Cyclically Adjusted Book per Share?

TGS ASA STU:TGC +1.57% 74 Cyclically Adjusted Book per Share is €10.62 as of Jun. 2026. GuruFocus rates STU:TGC with a GF Score™ of 74/100 and a GF Value™ of €9.86 (Modestly Overvalued). The stock has 4 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.

TGS ASA's adjusted book value per share for the three months ended in Jun. 2026 was €8.614. 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 €10.62 for the trailing ten years ended in Jun. 2026.

During the past 12 months, TGS ASA's average Cyclically Adjusted Book Growth Rate was 0.10% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 2.20% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 4.70% 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 TGS ASA was 8.00% per year. The lowest was 2.20% per year. And the median was 7.25% per year.

As of today (2026-08-01), TGS ASA's current stock price is €11.64. TGS ASA's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was €10.62. TGS ASA's Cyclically Adjusted PB Ratio of today is 1.10.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of TGS ASA was 4.30. The lowest was 0.59. And the median was 1.31.


TGS ASA  (STU:TGC) 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.

TGS ASA's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=11.64/10.62
=1.10

* 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 TGS ASA was 4.30. The lowest was 0.59. And the median was 1.31.


Be Aware

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


TGS ASA Cyclically Adjusted Book per Share Related Terms


TGS ASA Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for TGS ASA'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.

TGS ASA Cyclically Adjusted Book per Share Chart

TGS ASA Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 10.48 10.48 10.33 9.96 9.87

TGS ASA 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 10.29 10.14 9.87 10.76 10.62

STU:TGC vs SLB, BKR, FTI: Cyclically Adjusted Book per Share Comparison

For the Oil & Gas Equipment & Services subindustry, TGS ASA'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.


TGS ASA Cyclically Adjusted PB Ratio vs Oil & Gas Industry

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

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


STU:TGC
74GF Score
TGS ASA STU:TGC
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

TGS ASA 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, TGS ASA'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)
=8.614/333.9520*333.9520
=8.614

Current CPI (Jun. 2026) = 333.9520.

TGS ASA Quarterly Data

Book Value per Share CPI Adj_Book
201609 10.129 241.428 14.011
201612 10.909 241.432 15.089
201703 10.664 243.801 14.607
201706 10.124 244.955 13.802
201709 9.513 246.819 12.871
201712 9.920 246.524 13.438
201803 8.910 249.554 11.923
201806 9.511 251.989 12.605
201809 9.483 252.439 12.545
201812 10.566 251.233 14.045
201903 10.602 254.202 13.928
201906 10.260 256.143 13.377
201909 11.729 256.759 15.255
201912 11.874 256.974 15.431
202003 11.149 258.115 14.425
202006 10.260 257.797 13.291
202009 9.134 260.280 11.719
202012 8.896 260.474 11.406
202103 9.264 264.877 11.680
202106 8.953 271.696 11.004
202109 9.189 274.310 11.187
202112 8.501 278.802 10.183
202203 8.756 287.504 10.171
202206 9.201 296.311 10.370
202209 9.050 296.808 10.183
202212 9.373 296.797 10.546
202303 9.068 301.836 10.033
202306 9.005 305.109 9.856
202309 9.318 307.789 10.110
202312 8.935 306.746 9.727
202403 8.728 312.332 9.332
202406 8.943 314.175 9.506
202409 9.508 315.301 10.070
202412 10.100 315.605 10.687
202503 9.687 319.799 10.116
202506 8.688 322.561 8.995
202509 8.671 324.800 8.915
202512 8.608 324.054 8.871
202603 8.537 330.213 8.634
202606 8.614 333.952 8.614

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 €10.62 mean?
TGS ASA (STU:TGC) has a Cyclically Adjusted Book per Share of €10.62 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 TGS ASA and its competitors.
Is TGS ASA's Cyclically Adjusted Book per Share too high?
TGS ASA's current Cyclically Adjusted Book per Share is €10.62. Overall, TGS ASA has a GF Score™ of 74/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does TGS ASA's Cyclically Adjusted Book per Share compare to SLB and BKR?
TGS ASA's Cyclically Adjusted Book per Share of €10.62 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 TGS ASA and its competitors. TGS ASA's current Cyclically Adjusted Book per Share is €10.62. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is TGS ASA stock overvalued right now?
Based on GuruFocus' analysis, TGS ASA (STU:TGC) is currently considered Modestly Overvalued. The stock's GF Value™ is €9.86, compared to a current price of €11.64 — trading 18.1% above its estimated fair value. The current Cyclically Adjusted Book per Share is €10.62. TGS ASA's overall GF Score™ is 74/100 with 4 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 TGS ASA (STU:TGC), the current Cyclically Adjusted Book per Share is €10.62 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 TGS ASA (STU:TGC) Overvalued in 2026?

Based on GuruFocus' analysis, TGS ASA stock appears to be overvalued. The current stock price of €11.64 is trading 18.1% above its estimated GF Value™ of €9.86. GuruFocus considers TGS ASA to be Modestly Overvalued.

Key valuation signals for STU:TGC:

  • Cyclically Adjusted Book per Share: €10.62
  • GF Value™: €9.86 vs. price of €11.64 (18.1% above fair value)
  • GF Score™: 74/100 with 4 warning signs

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


TGS ASA Business Description

Industry EnergyOil & Gas
Address 10451 Clay Road, Houston, TX, USA, 77041
TGS ASA provides energy data and related services, offering technology and solutions that support decision-making across the energy value chain, including exploration and production activities. The company's business activities are organized in the following segments: Multi-client, Marine Data Acquisition (MDA), Imaging, New Energy Solutions (NES), and Shared Services. The majority of the company's revenue is derived from the Multi-client sales segment, which initiates, acquires, processes, markets and sells energy data to multiple customers on a non-exclusive basis. Geographically, it generates the maximum revenue from Africa and the Middle East.
74GF Score

Get the complete analysis for STU:TGC

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

€11.64
Price
€9.86
GF Value