ERG SpAMIL:ERG +1.40%76 PB Ratio is 1.65 as of Jun. 24, 2026, which is 2% above its 10-year median of 1.61. GuruFocus rates MIL:ERG with a GF Score™ of 76/100 and a GF Value™ of €24.37 (Fairly Valued). The stock has 5 warning signs investors should review. Among 430 Utilities - Independent Power Producers companies, ERG SpA ranks worse than 58.14% on this metric.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-06-24), ERG SpA's share price is €23.22. ERG SpA's Book Value per Share for the quarter that ended in Mar. 2026 was €14.06. Hence, ERG SpA's PB Ratio of today is 1.65.
The historical rank and industry rank for ERG SpA's PB Ratio or its related term are showing as below:
MIL:ERG'
s PB Ratio Range Over the Past 10 Years
Min: 0.85 Med: 1.61 Max: 2.92
Current: 1.64
During the past 13 years, ERG SpA's highest PB Ratio was 2.92. The lowest was 0.85. And the median was 1.61.
During the past 12 months, ERG SpA's average Book Value Per Share Growth Rate was -6.50% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was -0.10% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 5.30% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 2.20% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of ERG SpA was 21.70% per year. The lowest was -5.20% per year. And the median was 2.60% per year.
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
ERG SpA PB Ratio Related Terms
ERG SpA PB Ratio Historical Data
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The historical data trend for ERG SpA's 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.
For the Utilities - Renewable subindustry, ERG SpA'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.
ERG SpA PB Ratio vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, ERG SpA's PB Ratio distribution charts can be found below:
* The bar in red indicates where ERG SpA's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
ERG SpA's PB Ratio for today is calculated as follows:
* 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.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
ERG SpA (MIL:ERG) has a PB Ratio of 1.65 as of Jun. 24, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on ERG SpA and its competitors. This is near median its historical median of 1.61. Over the past decade, ERG SpA's PB Ratio has ranged from 0.85 to 2.92. According to the industry distribution chart, ERG SpA ranks #250 out of 430 companies in the Utilities - Independent Power Producers industry, placing it in the top 58.1%.
Is ERG SpA's PB Ratio too high?
ERG SpA's current PB Ratio of 1.65 is near median its 10-year median of 1.61. Over the past 10 years, this metric has ranged from a low of 0.85 to a high of 2.92. The Utilities - Independent Power Producers industry median PB Ratio is 1.36. ERG SpA's value of 1.65 is 21.3% above this industry median. Based on the distribution chart, ERG SpA ranks #250 out of 430 companies in the Utilities - Independent Power Producers industry, which is below the industry midpoint. Overall, ERG SpA has a GF Score™ of 76/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does ERG SpA's PB Ratio compare to competitors?
According to the Utilities - Independent Power Producers industry distribution chart, ERG SpA ranks #250 out of 430 companies for PB Ratio. This places ERG SpA in the lower half of its industry. The industry median PB Ratio is 1.36. ERG SpA's value of 1.65 is 21.3% above this benchmark. Historically, ERG SpA's own PB Ratio has ranged from 0.85 to 2.92 over the past decade. While the company's 10-year median is 1.61 vs. the industry median of 1.36, ERG SpA has consistently been above 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 PB Ratio for an Utilities - Independent Power Producers company?
The median PB Ratio among Utilities - Independent Power Producers companies is 1.36, based on 430 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. ERG SpA's current PB Ratio of 1.65 is 21.3% above 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 PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on ERG SpA and its competitors. For the Utilities - Independent Power Producers industry, the median PB Ratio is 1.36 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. ERG SpA's current PB Ratio is 1.65, which is near median its own 10-year median of 1.61. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is ERG SpA stock overvalued right now?
Based on GuruFocus' analysis, ERG SpA (MIL:ERG) is currently considered Fairly Valued. The stock's GF Value™ is €24.37, compared to a current price of €23.22 — trading 4.7% below its estimated fair value. The current PB Ratio is 1.65, which is near median its 10-year median of 1.61 and 21.3% above the Utilities - Independent Power Producers industry median of 1.36. ERG SpA's overall GF Score™ is 76/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For ERG SpA (MIL:ERG), the current PB Ratio is 1.65 as of Jun. 24, 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 ERG SpA (MIL:ERG) Overvalued in 2026?
Based on GuruFocus' analysis, ERG SpA stock appears to be undervalued.
The current stock price of €23.22 is trading 4.7% below its estimated GF Value™ of €24.37.
GuruFocus considers ERG SpA to be Fairly Valued.
Key valuation signals for MIL:ERG:
PB Ratio: 1.65 (near median its 10-year median of 1.61)
GF Value™: €24.37 vs. price of €23.22 (4.7% below fair value)
Industry Position: 21.3% above the Utilities - Independent Power Producers median (#250 of 430)
No single metric tells the full story. See the MIL:ERG stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
ERG SpA produces electricity from clean, renewable, and sustainable sources. Its energy comes from the combination of natural resources such as wind and sun. The company produces wind power, and electricity as a hydroelectric operator to markets across Europe. Electricity is also generated from natural gas operations located in Italy. ERG's wind power production is handled by subsidiary ENG Renew which focuses on developing, building, and operating wind assets. Hydropower and natural gas operations are split off into ERG Power Generation. The company's hydro assets include plants, dams, reservoirs, and a pumping station. Electricity from the plant is either fed into Italy's national grid or used to power other industrial plants.
76GF Score
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