GASNF (Naturgy Energy Group) Book Value per Share: $11.81 (As of Dec. 2025)

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.

GASNF Naturgy Energy Group SA GASNF
69 GF Score
Price $31.90
GF Value $25.48
Valuation Modestly Overvalued
! 7 Warning Signs
View Full Analysis

What is Naturgy Energy Group Book Value per Share?

Naturgy Energy Group GASNF -5.25% 69 Book Value per Share is $11.81 as of Dec. 2025. GuruFocus rates GASNF with a GF Score™ of 69/100 and a GF Value™ of $25.48 (Modestly Overvalued). The stock has 7 warning signs investors should review.

Naturgy Energy Group's book value per share for the quarter that ended in Dec. 2025 was $11.81.

During the past 12 months, Naturgy Energy Group's average Book Value Per Share Growth Rate was 2.20% per year. During the past 3 years, the average Book Value Per Share Growth Rate was 8.60% per year. During the past 5 years, the average Book Value Per Share Growth Rate was 7.70% per year. During the past 10 years, the average Book Value Per Share Growth Rate was -5.30% 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 book value growth rate using book value per share data.

During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Naturgy Energy Group was 17.50% per year. The lowest was -18.00% per year. And the median was 2.50% per year.

Naturgy Energy Group's current price is $31.901. Its book value per share for the quarter that ended in Dec. 2025 was $11.81. Hence, today's PB Ratio of Naturgy Energy Group is 2.70.

During the past 13 years, the highest P/B Ratio of Naturgy Energy Group was 4.83. The lowest was 1.12. And the median was 2.35.

Warning Sign:

Naturgy Energy Group SA stock PB Ratio (=2.78) is close to 2-year high of 2.95.


Naturgy Energy Group  (OTCPK:GASNF) Book Value per Share Explanation

Usually a company's book value and Tangible Book per Share may not reflect its true value. The assets may be carried on the balance sheets at the original cost minus depreciation. This may underestimate the true economic values of the assets. It also may over-estimate their true economic value because the assets can become obsolete.

For financial companies such as banks and insurance companies, their assets may be reported in current market value of the assets owned. Book values of financial companies are more accurate indicator of the economic value of the company.


Naturgy Energy Group Book Value per Share Related Terms


Naturgy Energy Group Book Value per Share Historical Data

* Premium members only.

The historical data trend for Naturgy Energy Group's Book Value 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.

Naturgy Energy Group Book Value per Share Chart

Naturgy Energy Group Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Book Value per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 6.93 8.35 10.72 10.33 11.81

Naturgy Energy Group Semi-Annual Data
Jun16 Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
Book Value 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 10.72 10.95 10.33 10.28 11.81

GASNF vs ATO, NI, UGI: Book Value per Share Comparison

For the Utilities - Regulated Gas subindustry, Naturgy Energy Group's PB Ratio, along with its competitors' market caps and 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.


Naturgy Energy Group PB Ratio vs Utilities - Regulated Industry

For the Utilities - Regulated industry and Utilities sector, Naturgy Energy Group's PB Ratio distribution charts can be found below:

* The bar in red indicates where Naturgy Energy Group's PB Ratio falls into.


GASNF
69GF Score
Naturgy Energy Group SA GASNF
Book Value per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Naturgy Energy Group Book Value per Share Calculation

Naturgy Energy Group's Book Value Per Share for the fiscal year that ended in Dec. 2025 is calculated as:

Book Value Per Share=(Total Stockholders Equity-Preferred Stock)/Shares Outstanding (EOP)
=(10,939-0)/926
=11.81

Naturgy Energy Group's Book Value Per Share for the quarter that ended in Dec. 2025 is calculated as:

Book Value Per Share=(Total Stockholders Equity-Preferred Stock)/Shares Outstanding (EOP)
=(10,939-0)/926
=11.81

* 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.

Theoretically it is what the shareholders will receive if the company is liquidated. Total Stockholders Equity is a balance sheet item and equal to Total Assets less Total Liabilities of the company.

Book value may include intangible items which may come from the company's past acquisitions. Book value less intangibles is called Tangible Book.

Frequently Asked Questions Learn more about Book Value per Share →
What does a Book Value per Share of $11.81 mean?
Naturgy Energy Group (GASNF) has a Book Value per Share of $11.81 as of Dec. 2025. Book value per share gives the per-share value of a company's stockholder equity. View historical data on Naturgy Energy Group and its competitors.
Is Naturgy Energy Group's Book Value per Share too high?
Naturgy Energy Group's current Book Value per Share is $11.81. Overall, Naturgy Energy Group has a GF Score™ of 69/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Naturgy Energy Group's Book Value per Share compare to ATO and NI?
Naturgy Energy Group's Book Value per Share of $11.81 can be compared against companies in the Utilities - Regulated industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Book Value per Share for an Utilities - Regulated company?
A good Book Value per Share depends on the Utilities - Regulated industry context. However, Book Value 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 Book Value per Share mean?
A high Book Value per Share can signal that a stock is expensive relative to its fundamentals. Book value per share gives the per-share value of a company's stockholder equity. View historical data on Naturgy Energy Group and its competitors. Naturgy Energy Group's current Book Value per Share is $11.81. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Naturgy Energy Group stock overvalued right now?
Based on GuruFocus' analysis, Naturgy Energy Group (GASNF) is currently considered Modestly Overvalued. The stock's GF Value™ is $25.48, compared to a current price of $31.90 — trading 25.2% above its estimated fair value. The current Book Value per Share is $11.81. Naturgy Energy Group's overall GF Score™ is 69/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Book Value per Share calculated?
Book Value per Share is calculated from a company's financial statements. For Naturgy Energy Group (GASNF), the current Book Value per Share is $11.81 as of Dec. 2025. 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 Naturgy Energy Group (GASNF) Overvalued in 2026?

Based on GuruFocus' analysis, Naturgy Energy Group stock appears to be overvalued. The current stock price of $31.90 is trading 25.2% above its estimated GF Value™ of $25.48. GuruFocus considers Naturgy Energy Group to be Modestly Overvalued.

Key valuation signals for GASNF:

  • Book Value per Share: $11.81
  • GF Value™: $25.48 vs. price of $31.90 (25.2% above fair value)
  • GF Score™: 69/100 with 7 warning signs

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


Naturgy Energy Group Business Description

Address Avenida de America 38, Madrid, ESP
Naturgy stems from the 2008 acquisition of Union Fenosa. The company operates across the gas value chain, from procurement to distribution and marketing. It owns and operates the largest gas distribution network in Spain, where it is also the leading retail gas supplier. The company additionally operates gas and electricity distribution networks across several Latin American countries. It owns 17.9 GW of generation capacity, including 7.3 GW of wind and solar.
69GF Score

Get the complete analysis for GASNF

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

$31.90
Price
$25.48
GF Value