Summa Defence Oyj (OSTO:SUMMAS) 3-Year RORE % : 18.31% (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.

OSTO:SUMMAS Summa Defence Oyj OSTO:SUMMAS
48 GF Score
Price kr6.18
GF Value kr13.54
Valuation Possible Value Trap
! 6 Warning Signs
View Full Analysis

What is Summa Defence Oyj 3-Year RORE %?

Summa Defence Oyj OSTO:SUMMAS -1.75% 48 3-Year RORE % is 18.31 as of Dec. 2025. GuruFocus rates OSTO:SUMMAS with a GF Score™ of 48/100 and a GF Value™ of kr13.54 (Possible Value Trap). The stock has 6 warning signs investors should review. Among 318 Aerospace & Defense companies, Summa Defence Oyj ranks better than 60.38% on this metric.

Return on Retained Earnings (RORE) is an indicator of a company's growth potential, it shows how much a company earns by reinvesting its retained earnings, i.e. profits after dividend payments. Summa Defence Oyj's 3-Year RORE % for the quarter that ended in Dec. 2025 was 18.31%.

The industry rank for Summa Defence Oyj's 3-Year RORE % or its related term are showing as below:

OSTO:SUMMAS's 3-Year RORE % is ranked better than
60.38% of 318 companies
in the Aerospace & Defense industry
Industry Median: 9.725 vs OSTO:SUMMAS: 18.31

Summa Defence Oyj  (OSTO:SUMMAS) 3-Year RORE % Explanation

Return on Retained Earnings (RORE) is important to investors because it reveals a company's efficiency and growth potential. A higher RORE indicates a higher return. A high RORE indicates that the company should reinvest profits into the business. A lower RORE suggests that the company should distribute profits to shareholders by paying out dividends, since those dollars aren't generating much additional growth for the company.

There are a several different ways to arrive at the Return on Retained Earnings. The simplest way to calculate it is by using published information on Earnings per Share (EPS) and Dividend per Share (DPS) over a selected period. Here, 3-year period is chosen.

Be Aware

Please keep in mind that the RORE is relative to the nature of the business and its competitors. If another company in the same sector is producing a lower return on retained earnings, it doesn’t necessarily mean it’s a bad investment. It may just suggest the company is older and no longer in a high growth stage. At such a stage in the business cycle, it would be expected to see a lower RORE and higher dividend payout.


Summa Defence Oyj 3-Year RORE % Related Terms


Summa Defence Oyj 3-Year RORE % Historical Data

* Premium members only.

The historical data trend for Summa Defence Oyj's 3-Year RORE % 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.

Summa Defence Oyj 3-Year RORE % Chart

Summa Defence Oyj Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
3-Year RORE %
Get a 7-Day Free Trial Premium Member Only Premium Member Only -20.63 -62.49 -73.43 22.56 18.31

Summa Defence Oyj Semi-Annual Data
Jun16 Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
3-Year RORE % 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 -73.43 0.00 22.56 80.50 18.31

OSTO:SUMMAS vs SPCX, GE, RTX: 3-Year RORE % Comparison

For the Aerospace & Defense subindustry, Summa Defence Oyj's 3-Year RORE %, along with its competitors' market caps and 3-Year RORE % 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.


Summa Defence Oyj 3-Year RORE % vs Aerospace & Defense Industry

For the Aerospace & Defense industry and Industrials sector, Summa Defence Oyj's 3-Year RORE % distribution charts can be found below:

* The bar in red indicates where Summa Defence Oyj's 3-Year RORE % falls into.


OSTO:SUMMAS
48GF Score
Summa Defence Oyj OSTO:SUMMAS
3-Year RORE % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Summa Defence Oyj 3-Year RORE % Calculation

Summa Defence Oyj's 3-Year RORE % for the quarter that ended in Dec. 2025 is calculated as:

3-Year RORE %=( Most Recent EPS (Diluted)- First Period EPS (Diluted) )/( Cumulative EPS (Diluted) for 3-year -Cumulative Dividends per Share for 3-year )
=( -7.788--1.167 )/( -36.17-0 )
=-6.621/-36.17
=18.31 %

* 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.

In the calculation of 3-Year RORE %, the most recent and first period EPS (Diluted) is the trailing twelve months (TTM) data ended in Dec. 2025 and 3-year before.

Frequently Asked Questions Learn more about 3-Year RORE % →
What does a 3-Year RORE % of 18.31 mean?
Summa Defence Oyj (OSTO:SUMMAS) has a 3-Year RORE % of 18.31 as of Dec. 2025. 3-Year RORE % shows how much a company earns by reinvesting its retained earnings in 3-year. View historical data on Summa Defence Oyj and its competitors. According to the industry distribution chart, Summa Defence Oyj ranks #126 out of 318 companies in the Aerospace & Defense industry, placing it in the top 39.6%.
Is Summa Defence Oyj's 3-Year RORE % too high?
Summa Defence Oyj's current 3-Year RORE % is 18.31. The Aerospace & Defense industry median 3-Year RORE % is 9.73. Summa Defence Oyj's value of 18.31 is 88.3% above this industry median. Based on the distribution chart, Summa Defence Oyj ranks #126 out of 318 companies in the Aerospace & Defense industry, which is above the industry midpoint. Overall, Summa Defence Oyj has a GF Score™ of 48/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Summa Defence Oyj's 3-Year RORE % compare to SPCX and GE?
According to the Aerospace & Defense industry distribution chart, Summa Defence Oyj ranks #126 out of 318 companies for 3-Year RORE %. This puts Summa Defence Oyj in the upper half of its industry. The industry median 3-Year RORE % is 9.73. Summa Defence Oyj's value of 18.31 is 88.3% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 3-Year RORE % for an Aerospace & Defense company?
The median 3-Year RORE % among Aerospace & Defense companies is 9.73, based on 318 companies in the industry. Companies in the top quartile (top 25%) have a 3-Year RORE % significantly above this median, while those in the bottom quartile fall well below. However, 3-Year RORE % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Summa Defence Oyj's current 3-Year RORE % of 18.31 is 88.3% 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 3-Year RORE % mean?
A high 3-Year RORE % can signal that a stock is expensive relative to its fundamentals. 3-Year RORE % shows how much a company earns by reinvesting its retained earnings in 3-year. View historical data on Summa Defence Oyj and its competitors. For the Aerospace & Defense industry, the median 3-Year RORE % is 9.73 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Summa Defence Oyj's current 3-Year RORE % is 18.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Summa Defence Oyj stock overvalued right now?
Based on GuruFocus' analysis, Summa Defence Oyj (OSTO:SUMMAS) is currently considered Possible Value Trap. The stock's GF Value™ is kr13.54, compared to a current price of kr6.18 — trading 54.4% below its estimated fair value. The current 3-Year RORE % is 18.31 and 88.3% above the Aerospace & Defense industry median of 9.73. Summa Defence Oyj's overall GF Score™ is 48/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-Year RORE % calculated?
3-Year RORE % is calculated from a company's financial statements. For Summa Defence Oyj (OSTO:SUMMAS), the current 3-Year RORE % is 18.31 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 Summa Defence Oyj (OSTO:SUMMAS) Overvalued in 2026?

Based on GuruFocus' analysis, Summa Defence Oyj stock appears to be undervalued. The current stock price of kr6.18 is trading 54.4% below its estimated GF Value™ of kr13.54. GuruFocus considers Summa Defence Oyj to be Possible Value Trap.

Key valuation signals for OSTO:SUMMAS:

  • 3-Year RORE %: 18.31
  • GF Value™: kr13.54 vs. price of kr6.18 (54.4% below fair value)
  • GF Score™: 48/100 with 6 warning signs
  • Industry Position: 88.3% above the Aerospace & Defense median (#126 of 318)

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


Summa Defence Oyj Business Description

Other Exchanges SUMMA:Finland5J40:Germany
Address Makelankatu 87, Helsinki, FIN, 00610
Summa Defence Oyj is a Finnish defense and security technology group supporting industry growth and strengthening industrial production capacity amid geopolitical change. Summa Defence focuses on dual-use technologies related to security of supply, situational awareness, mobility, and defense, which benefit the civilian, security, and defense sectors while strengthening comprehensive security, security of supply, and crisis management capabilities. Its products includes Multipurpose vessels, Multipurpose machinery, Watermaster, containers and modular spaces, Drones, XR near-eye display solutions, Griselda - Intelligence data fusion platform, and Renewable energy.
48GF Score

Get the complete analysis for OSTO:SUMMAS

3-Year RORE % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

kr6.18
Price
kr13.54
GF Value