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ERG SpAMIL:ERG +0.71%78 Graham Number is €7.71 as of Mar. 2026, which is 100% below its 10-year median of 2.34. GuruFocus rates MIL:ERG with a GF Score™ of 78/100 and a GF Value™ of €24.48 (Fairly Valued). The stock has 5 warning signs investors should review. Among 275 Utilities - Independent Power Producers companies, ERG SpA ranks worse than 85.82% on this metric.
Graham Number is a figure that measures a stock's fundamental value by taking into account the company's earnings per share and book value per share. The Graham number is the upper bound of the price range that a defensive investor should pay for the stock. According to the theory, any stock price below the Graham number is considered undervalued, and thus worth investing in.
As of today (2026-07-18), the stock price of ERG SpA is €22.84. ERG SpA's graham number for the quarter that ended in Mar. 2026 was €7.71. Therefore, ERG SpA's Price to Graham Number ratio for today is 2.96.
The historical rank and industry rank for ERG SpA's Graham Number or its related term are showing as below:
MIL:ERG'
s Price-to-Graham-Number Range Over the Past 10 Years
Min: 0.76 Med: 2.34 Max: 4.1
Current: 2.96
During the past 13 years, the highest Price to Graham Number ratio of ERG SpA was 4.10. The lowest was 0.76. And the median was 2.34.
MIL:ERG's Price-to-Graham-Number is ranked worse than 85.82% of 275
companies
in the Utilities - Independent Power Producers industry
Industry Median: 1.13
vs MIL:ERG: 2.96
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
ERG SpA (MIL:ERG) Graham Number Explanation
Ben Graham actually did not publish a formula like this. But he wrote in The Intelligent Investor (1948 version) regarding to the criteria for purchases:
Current price should not be more than 15 times average earnings of the past three years.
Current price should not be more than 1.5 times the book value last reported. However, a multiplier of earnings below 15 could justify a correspondingly higher multiplier of assets. As a rule of thumb we suggest that the product of the multiplier times the ratio of price to book value should not exceed 22.5. (This figure corresponds to 15 times earnings and 1.5 times book value. It would admit an issue selling at only 9 times earnings and 2.5 times asset value, etc.)
Unlike valuation methods such as DCF or Discounted Earnings, the Graham number does not take growth into the valuation. Unlike the valuation methods based on book value alone, it takes into account the earnings power. Therefore, the Graham Number is a combination of asset valuation and earnings power valuation.
In general, the Graham number is a very conservative way of valuing a stock. It cannot be applied to companies with negative book values.
ERG SpA's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Mar. 2026 )
=
22.84
/
7.71
=
2.96
* 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.
Be Aware
Please keep these in mind:
1. Graham Number does not take growth into account. Therefore it underestimates the values of the companies that have good earnings growth. We feel that if the earnings per share grows more than 10% a year, Graham Number underestimates the value.
2. Graham Number punishes the companies that have temporarily low earnings. Therefore, an average of earnings makes more sense in the calculation of Graham Number.
3. Graham Numbers underestimates companies that are light with book.
ERG SpA Graham Number Related Terms
ERG SpA Graham Number Historical Data
* Premium members only.
The historical data trend for ERG SpA's Graham Number 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 Price-to-Graham-Number, along with its competitors' market caps and Price-to-Graham-Number 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 Price-to-Graham-Number vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, ERG SpA's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where ERG SpA's Price-to-Graham-Number falls into.
* 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.
ERG SpA (MIL:ERG) has a Graham Number of €7.71 as of Mar. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on ERG SpA and its competitors. This is 229% above median its historical median of 2.34. Over the past decade, ERG SpA's Graham Number has ranged from 0.76 to 4.10. According to the industry distribution chart, ERG SpA ranks #236 out of 275 companies in the Utilities - Independent Power Producers industry, placing it in the top 85.8%.
Is ERG SpA's Graham Number too high?
ERG SpA's current Graham Number of €7.71 is 229% above median its 10-year median of 2.34. Over the past 10 years, this metric has ranged from a low of 0.76 to a high of 4.10. Based on the distribution chart, ERG SpA ranks #236 out of 275 companies in the Utilities - Independent Power Producers industry, which is in the bottom quartile relative to peers. Overall, ERG SpA has a GF Score™ of 78/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does ERG SpA's Graham Number compare to competitors?
According to the Utilities - Independent Power Producers industry distribution chart, ERG SpA ranks #236 out of 275 companies for Graham Number. This places ERG SpA in the lower half of its industry. The industry median Graham Number is 1.13. Historically, ERG SpA's own Graham Number has ranged from 0.76 to 4.10 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Graham Number for an Utilities - Independent Power Producers company?
The median Graham Number among Utilities - Independent Power Producers companies is 1.13, based on 275 companies in the industry. Companies in the top quartile (top 25%) have a Graham Number significantly above this median, while those in the bottom quartile fall well below. However, Graham Number 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 Graham Number mean?
A high Graham Number can signal that a stock is expensive relative to its fundamentals. The Graham Number values a company based on its per-share earnings and book value. View historical data on ERG SpA and its competitors. For the Utilities - Independent Power Producers industry, the median Graham Number is 1.13 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. ERG SpA's current Graham Number is €7.71, which is 229% above median its own 10-year median of 2.34. 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 €24.48, compared to a current price of €22.84 — trading 6.7% below its estimated fair value. The current Graham Number is €7.71, which is 229% above median its 10-year median of 2.34. ERG SpA's overall GF Score™ is 78/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Graham Number calculated?
Graham Number is calculated from a company's financial statements. For ERG SpA (MIL:ERG), the current Graham Number is €7.71 as of Mar. 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 €22.84 is trading 6.7% below its estimated GF Value™ of €24.48.
GuruFocus considers ERG SpA to be Fairly Valued.
Key valuation signals for MIL:ERG:
Graham Number: €7.71 (229% above median its 10-year median of 2.34)
GF Value™: €24.48 vs. price of €22.84 (6.7% below fair value)
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.
78GF Score
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