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Terna SpATERRF 89 Shiller PE Ratio is 19.55 as of Aug. 30, 2026, which is 4% above its 10-year median of 18.72. GuruFocus rates TERRF with a GF Score™ of 89/100 and a GF Value™ of $11.41 (Fairly Valued). The stock has 3 warning signs investors should review. Among 396 Utilities - Regulated companies, Terna SpA ranks worse than 62.88% on this metric.
As of today (2026-08-30), Terna SpA's current share price is $10.95. Terna SpA's E10 for the quarter that ended in Jun. 2026 was $0.56. Terna SpA's Shiller PE Ratio for today is 19.55.
The historical rank and industry rank for Terna SpA's Shiller PE Ratio or its related term are showing as below:
TERRF'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 14.32 Med: 18.72 Max: 22.92
Current: 20.14
During the past years, Terna SpA's highest Shiller PE Ratio was 22.92. The lowest was 14.32. And the median was 18.72.
TERRF's Shiller PE Ratio is ranked worse than 62.88% of 396
companies
in the Utilities - Regulated industry
Industry Median: 16.94
vs TERRF: 20.14
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.
Terna SpA's adjusted earnings per share data for the three months ended in Jun. 2026 was $0.181. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $0.56 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Terna SpA (OTCPK:TERRF) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
Terna SpA Shiller PE Ratio Related Terms
Terna SpA Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Terna SpA's Shiller PE 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.
TERRF vs NEE, SO, DUK: Shiller PE Ratio Comparison
For the Utilities - Regulated Electric subindustry, Terna SpA's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.
Terna SpA Shiller PE Ratio vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, Terna SpA's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Terna SpA's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
Terna SpA's Shiller PE 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.
Terna SpA's E10 for the quarter that ended in Jun. 2026 is calculated as:
For example, Terna SpA's adjusted earnings per share data for the three months ended in Jun. 2026 was:
Add all the adjusted EPS together and divide 10 will get our E10.
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.
Terna SpA (TERRF) has a Shiller PE Ratio of 19.55 as of Aug. 30, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Terna SpA and its competitors. This is near median its historical median of 18.72. Over the past decade, Terna SpA's Shiller PE Ratio has ranged from 14.32 to 22.92. According to the industry distribution chart, Terna SpA ranks #249 out of 396 companies in the Utilities - Regulated industry, placing it in the top 62.9%.
Is Terna SpA's Shiller PE Ratio too high?
Terna SpA's current Shiller PE Ratio of 19.55 is near median its 10-year median of 18.72. Over the past 10 years, this metric has ranged from a low of 14.32 to a high of 22.92. The Utilities - Regulated industry median Shiller PE Ratio is 16.94. Terna SpA's value of 19.55 is 15.4% above this industry median. Based on the distribution chart, Terna SpA ranks #249 out of 396 companies in the Utilities - Regulated industry, which is below the industry midpoint. Overall, Terna SpA has a GF Score™ of 89/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Terna SpA's Shiller PE Ratio compare to NEE and SO?
According to the Utilities - Regulated industry distribution chart, Terna SpA ranks #249 out of 396 companies for Shiller PE Ratio. This places Terna SpA in the lower half of its industry. The industry median Shiller PE Ratio is 16.94. Terna SpA's value of 19.55 is 15.4% above this benchmark. Historically, Terna SpA's own Shiller PE Ratio has ranged from 14.32 to 22.92 over the past decade. While the company's 10-year median is 18.72 vs. the industry median of 16.94, Terna 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 Shiller PE Ratio for an Utilities - Regulated company?
The median Shiller PE Ratio among Utilities - Regulated companies is 16.94, based on 396 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Terna SpA's current Shiller PE Ratio of 19.55 is 15.4% 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 Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Terna SpA and its competitors. For the Utilities - Regulated industry, the median Shiller PE Ratio is 16.94 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Terna SpA's current Shiller PE Ratio is 19.55, which is near median its own 10-year median of 18.72. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Terna SpA stock overvalued right now?
Based on GuruFocus' analysis, Terna SpA (TERRF) is currently considered Fairly Valued. The stock's GF Value™ is $11.41, compared to a current price of $10.95 — trading 4% below its estimated fair value. The current Shiller PE Ratio is 19.55, which is near median its 10-year median of 18.72 and 15.4% above the Utilities - Regulated industry median of 16.94. Terna SpA's overall GF Score™ is 89/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Terna SpA (TERRF), the current Shiller PE Ratio is 19.55 as of Aug. 30, 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 Terna SpA (TERRF) Overvalued in 2026?
Based on GuruFocus' analysis, Terna SpA stock appears to be undervalued.
The current stock price of $10.95 is trading 4% below its estimated GF Value™ of $11.41.
GuruFocus considers Terna SpA to be Fairly Valued.
Key valuation signals for TERRF:
Shiller PE Ratio: 19.55 (near median its 10-year median of 18.72)
GF Value™: $11.41 vs. price of $10.95 (4% below fair value)
Industry Position: 15.4% above the Utilities - Regulated median (#249 of 396)
No single metric tells the full story. See the TERRF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Terna SpA is an electricity transmission system operator that owns virtually all of the Italian National Transmission Grid. With a monopoly under an Italian government license, Terna transmits and dispatches electricity throughout the country. It is also responsible for the planning, construction, and maintenance of the nation's electrical grid. Terna segments its operations into its Regulated Activities, Non-Regulated Activities, and International Activities. The company generates the vast majority of its revenue from charging transmission fees as a part of its Regulated Activities. Under its Non-Regulated Activities, Terna mainly produces and sells electricity transformers. The company has also made efforts to expand its operations into Italy's neighboring countries and North Africa.
89GF Score
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