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.
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.
TGS ASASTU:TGC -2.75%74 Cyclically Adjusted PB Ratio is 1.13 as of Jul. 27, 2026, which is 14% below its 10-year median of 1.31. GuruFocus rates STU:TGC with a GF Score™ of 74/100 and a GF Value™ of €9.66 (Modestly Overvalued). The stock has 4 warning signs investors should review. Among 766 Oil & Gas companies, TGS ASA ranks better than 54.57% on this metric.
As of today (2026-07-27), TGS ASA's current share price is €12.02. 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 for today is 1.13.
The historical rank and industry rank for TGS ASA's Cyclically Adjusted PB Ratio or its related term are showing as below:
STU:TGC'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.59 Med: 1.31 Max: 4.3
Current: 1.1
During the past years, TGS ASA's highest Cyclically Adjusted PB Ratio was 4.30. The lowest was 0.59. And the median was 1.31.
STU:TGC's Cyclically Adjusted PB Ratio is ranked better than 54.57% of 766
companies
in the Oil & Gas industry
Industry Median: 1.215
vs STU:TGC: 1.10
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 adjusted book value per share data 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.
Shiller PE for Stocks: The True Measure of Stock Valuation
TGS ASA (STU:TGC) 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.
TGS ASA Cyclically Adjusted PB Ratio Related Terms
TGS ASA Cyclically Adjusted PB Ratio Historical Data
* Premium members only.
The historical data trend for TGS ASA'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.
STU:TGC vs SLB, BKR, FTI: Cyclically Adjusted PB Ratio 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.
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.
TGS ASA's Cyclically Adjusted PB Ratio for today is calculated as
* 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.
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 1.13 mean?
TGS ASA (STU:TGC) has a Cyclically Adjusted PB Ratio of 1.13 as of Jul. 27, 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 TGS ASA and its competitors. This is 14% below median its historical median of 1.31. Over the past decade, TGS ASA's Cyclically Adjusted PB Ratio has ranged from 0.59 to 4.30. According to the industry distribution chart, TGS ASA ranks #348 out of 766 companies in the Oil & Gas industry, placing it in the top 45.4%.
Is TGS ASA's Cyclically Adjusted PB Ratio too high?
TGS ASA's current Cyclically Adjusted PB Ratio of 1.13 is 14% below median its 10-year median of 1.31. Over the past 10 years, this metric has ranged from a low of 0.59 to a high of 4.30. The Oil & Gas industry median Cyclically Adjusted PB Ratio is 1.22. TGS ASA's value of 1.13 is 7% below this industry median. Based on the distribution chart, TGS ASA ranks #348 out of 766 companies in the Oil & Gas industry, which is above the industry midpoint. 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 PB Ratio compare to SLB and BKR?
According to the Oil & Gas industry distribution chart, TGS ASA ranks #348 out of 766 companies for Cyclically Adjusted PB Ratio. This puts TGS ASA in the upper half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.22. TGS ASA's value of 1.13 is 7% below this benchmark. Historically, TGS ASA's own Cyclically Adjusted PB Ratio has ranged from 0.59 to 4.30 over the past decade. While the company's 10-year median is 1.31 vs. the industry median of 1.22, TGS ASA 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 an Oil & Gas company?
The median Cyclically Adjusted PB Ratio among Oil & Gas companies is 1.22, based on 766 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. TGS ASA's current Cyclically Adjusted PB Ratio of 1.13 is 7% 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 TGS ASA and its competitors. For the Oil & Gas industry, the median Cyclically Adjusted PB Ratio is 1.22 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. TGS ASA's current Cyclically Adjusted PB Ratio is 1.13, which is 14% below median its own 10-year median of 1.31. 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 €9.66, compared to a current price of €12.02 — trading 24.4% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 1.13, which is 14% below median its 10-year median of 1.31 and 7% below the Oil & Gas industry median of 1.22. 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 PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For TGS ASA (STU:TGC), the current Cyclically Adjusted PB Ratio is 1.13 as of Jul. 27, 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 €12.02 is trading 24.4% above its estimated GF Value™ of €9.66.
GuruFocus considers TGS ASA to be Modestly Overvalued.
Key valuation signals for STU:TGC:
Cyclically Adjusted PB Ratio: 1.13 (14% below median its 10-year median of 1.31)
GF Value™: €9.66 vs. price of €12.02 (24.4% above fair value)
Industry Position: 7% below the Oil & Gas median (#348 of 766)
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 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 PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
STU:TGC has been successfully added to your 
