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Terna SpAMIL:TRN +2.88%85 3-Year ROIIC % is 5.62 as of Dec. 2025, which is 6% above its 10-year median of 5.31. GuruFocus rates MIL:TRN with a GF Score™ of 85/100 and a GF Value™ of €9.92 (Fairly Valued). The stock has 3 warning signs investors should review. Among 478 Utilities - Regulated companies, Terna SpA ranks better than 58.37% on this metric.
3-Year Return on Invested Incremental Capital (3-Year ROIIC %) measures the change in earnings as a percentage of change in investment over 3-year.
Terna SpA's 3-Year ROIIC % for the quarter that ended in Dec. 2025 was 5.62%. High ROIIC is generally an indication that your business is capital efficient or has a higher operating leverage.
The industry rank for Terna SpA's 3-Year ROIIC % or its related term are showing as below:
MIL:TRN's 3-Year ROIIC % is ranked better than 58.37% of 478
companies
in the Utilities - Regulated industry
Industry Median: 3.845
vs MIL:TRN: 5.62
Terna SpA (MIL:TRN) 3-Year ROIIC % Explanation
Return on Incremental Invested Capital (ROIIC) is an extension of Return on Investment Capital (ROIC). ROIC % tells investors how efficiently that profitability is earned per dollar of company capital. ROIIC narrows the focus even further and shows how profitable each additional unit of capital investment could be. ROIIC % is a more powerful metric than ROIC because it measures how much money the company can generate going forward on future capital investments.
High ROIIC is generally an indication that your business is capital efficient or has a higher operating leverage.
Be Aware
It's important to keep in mind that when tracking ROIIC, the metric is better suited to forecasting the trend of future returns rather than measuring current return on investment.
Terna SpA 3-Year ROIIC % Related Terms
Terna SpA 3-Year ROIIC % Historical Data
* Premium members only.
The historical data trend for Terna SpA's 3-Year ROIIC % 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.
MIL:TRN vs NEE, SO, DUK: 3-Year ROIIC % Comparison
For the Utilities - Regulated Electric subindustry, Terna SpA's 3-Year ROIIC %, along with its competitors' market caps and 3-Year ROIIC % 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 3-Year ROIIC % vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, Terna SpA's 3-Year ROIIC % distribution charts can be found below:
* The bar in red indicates where Terna SpA's 3-Year ROIIC % 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.
** Annual data of NOPAT and Invested Capital was used to calculate 3-Year ROIIC %.
*** Please be aware that the ROIIC (Return on Invested Capital) calculations are based on company-level data using the primary share class. The calculated data provided is for demonstration purposes and may slightly differ from the results displayed in the title due to potential variations caused by currency exchange rate differences throughout the year.
Terna SpA (MIL:TRN) has a 3-Year ROIIC % of 5.62 as of Dec. 2025. 3-Year ROIIC % measures the change in earnings as a percentage of change in investment over 3-year. View historical data on Terna SpA and its competitors. This is near median its historical median of 5.31. Over the past decade, Terna SpA's 3-Year ROIIC % has ranged from 1.12 to 11.53. According to the industry distribution chart, Terna SpA ranks #199 out of 478 companies in the Utilities - Regulated industry, placing it in the top 41.6%.
Is Terna SpA's 3-Year ROIIC % too high?
Terna SpA's current 3-Year ROIIC % of 5.62 is near median its 10-year median of 5.31. Over the past 10 years, this metric has ranged from a low of 1.12 to a high of 11.53. The Utilities - Regulated industry median 3-Year ROIIC % is 3.85. Terna SpA's value of 5.62 is 46.2% above this industry median. Based on the distribution chart, Terna SpA ranks #199 out of 478 companies in the Utilities - Regulated industry, which is above the industry midpoint. Overall, Terna SpA has a GF Score™ of 85/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Terna SpA's 3-Year ROIIC % compare to NEE and SO?
According to the Utilities - Regulated industry distribution chart, Terna SpA ranks #199 out of 478 companies for 3-Year ROIIC %. This puts Terna SpA in the upper half of its industry. The industry median 3-Year ROIIC % is 3.85. Terna SpA's value of 5.62 is 46.2% above this benchmark. Historically, Terna SpA's own 3-Year ROIIC % has ranged from 1.12 to 11.53 over the past decade. While the company's 10-year median is 5.31 vs. the industry median of 3.85, 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 3-Year ROIIC % for an Utilities - Regulated company?
The median 3-Year ROIIC % among Utilities - Regulated companies is 3.85, based on 478 companies in the industry. Companies in the top quartile (top 25%) have a 3-Year ROIIC % significantly above this median, while those in the bottom quartile fall well below. However, 3-Year ROIIC % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Terna SpA's current 3-Year ROIIC % of 5.62 is 46.2% 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 3-Year ROIIC % mean?
A high 3-Year ROIIC % can signal that a stock is expensive relative to its fundamentals. 3-Year ROIIC % measures the change in earnings as a percentage of change in investment over 3-year. View historical data on Terna SpA and its competitors. For the Utilities - Regulated industry, the median 3-Year ROIIC % is 3.85 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Terna SpA's current 3-Year ROIIC % is 5.62, which is near median its own 10-year median of 5.31. 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 (MIL:TRN) is currently considered Fairly Valued. The stock's GF Value™ is €9.92, compared to a current price of €10.35 — trading 4.3% above its estimated fair value. The current 3-Year ROIIC % is 5.62, which is near median its 10-year median of 5.31 and 46.2% above the Utilities - Regulated industry median of 3.85. Terna SpA's overall GF Score™ is 85/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-Year ROIIC % calculated?
3-Year ROIIC % is calculated from a company's financial statements. For Terna SpA (MIL:TRN), the current 3-Year ROIIC % is 5.62 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 Terna SpA (MIL:TRN) Overvalued in 2026?
Based on GuruFocus' analysis, Terna SpA stock appears to be overvalued.
The current stock price of €10.35 is trading 4.3% above its estimated GF Value™ of €9.92.
GuruFocus considers Terna SpA to be Fairly Valued.
Key valuation signals for MIL:TRN:
3-Year ROIIC %: 5.62 (near median its 10-year median of 5.31)
GF Value™: €9.92 vs. price of €10.35 (4.3% above fair value)
Industry Position: 46.2% above the Utilities - Regulated median (#199 of 478)
No single metric tells the full story. See the MIL:TRN 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.
85GF Score
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