Summa Defence Oyj (OSTO:SUMMAS) Peter Lynch Fair Value: N/A (As of Jul. 31, 2026)

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 kr5.54
GF Value kr13.51
Valuation Possible Value Trap
! 6 Warning Signs
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What is Summa Defence Oyj Peter Lynch Fair Value?

Peter Lynch Fair Value applies to growing companies. The ideal range for the growth rate is between 10 - 20% a year. Peter Lynch thinks that the fair P/E value for a growth company equals its growth rate, that is PEG = 1. The earnings here is trailing twelve month (TTM) earnings. For non-bank companies, the growth rate we use is the average growth rate for EBITDA per share over the past 5 years. For Banks, the growth rate we use is the average growth rate for Book Value per share over the past 5 years. If 5-Year Growth Rate is greater than 25% a year, we use 25. If 5-Year Growth Rate is smaller than 5% a year, we do not calculate Peter Lynch Fair Value.


The historical rank and industry rank for Summa Defence Oyj's Peter Lynch Fair Value or its related term are showing as below:



OSTO:SUMMAS's Price-to-Peter-Lynch-Fair-Value is not ranked *
in the Aerospace & Defense industry.
Industry Median: 2.12
* Ranked among companies with meaningful Price-to-Peter-Lynch-Fair-Value only.

Note: Please don't confuse Peter Lynch Fair Value with the value reached in Peter Lynch Chart.


Summa Defence Oyj  (OSTO:SUMMAS) Peter Lynch Fair Value Explanation

Peter Lynch Fair Value applies to growing companies. The ideal range for the growth rate is between 10 - 20% a year.

Peter Lynch thinks that the fair P/E value for a growth company equals its growth rate, that is PEG = 1. The earnings here is trailing twelve month (TTM) earnings. For non-bank companies, the growth rate we use is the average growth rate for EBITDA per share over the past 5 years. For Banks, the growth rate we use is the average growth rate for Book Value per share over the past 5 years.

Please don't confuse Peter Lynch Fair Value with the value reached in Peter Lynch Chart. In Peter Lynch chart, a fixed P/E ratio of 15 is used to draw the Earnings Line. Therefore the value reached has a P/E ratio of 15. But in Peter Lynch Fair Value calculation, P/E equals to the growth rate of EBITDA per share over the past 5 years, which is 0 instead of 15 in this case.

Summa Defence Oyj's Price to Peter Lynch Fair Value Ratio for today is calculated as

Price to Peter Lynch Fair Value=Share Price/Peter Lynch Fair Value
=5.54/N/A
=N/A

* 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 Peter Lynch Fair Value Related Terms


Summa Defence Oyj Peter Lynch Fair Value Historical Data

* Premium members only.

The historical data trend for Summa Defence Oyj's Peter Lynch Fair Value 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 Peter Lynch Fair Value Chart

Summa Defence Oyj Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Peter Lynch Fair Value
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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
Peter Lynch Fair Value 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 0.00 0.00 0.00 0.00 0.00

OSTO:SUMMAS vs SPCX, GE, RTX: Peter Lynch Fair Value Comparison

For the Aerospace & Defense subindustry, Summa Defence Oyj's Price-to-Peter-Lynch-Fair-Value, along with its competitors' market caps and Price-to-Peter-Lynch-Fair-Value 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 Price-to-Peter-Lynch-Fair-Value vs Aerospace & Defense Industry

For the Aerospace & Defense industry and Industrials sector, Summa Defence Oyj's Price-to-Peter-Lynch-Fair-Value distribution charts can be found below:

* The bar in red indicates where Summa Defence Oyj's Price-to-Peter-Lynch-Fair-Value falls into.


OSTO:SUMMAS
48GF Score
Summa Defence Oyj OSTO:SUMMAS
Peter Lynch Fair Value is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Summa Defence Oyj Peter Lynch Fair Value Calculation

Summa Defence Oyj's Peter Lynch Fair Value for today is calculated as

Peter Lynch Fair Value=PEG Ratio*5-Year TTM EBITDA Growth Rate***EPS without NRI (TTM)
=1* N/A *-5.685
=N/A

For company reported semi-annually, GuruFocus uses latest annual data as the TTM data. Summa Defence Oyj's EPS without NRI for the trailing twelve months (TTM) ended in Dec. 2025 was kr-5.69.


* 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.

** Please be aware that the 5-Year TTM EBITDA Growth Rate is calculated based on TTM data over the last 5 years. For quarterly reported companies, the TTM data adds up the quarterly data reported by the company within the most recent 12 months. For companies that report semi-annually, annually, or do not have enough quarterly data, GuruFocus uses the annual data as the TTM data.

If 5-Year Earnings Growth Rate is greater than 25% a year, we use 25.

If 5-Year Earnings Growth Rate is smaller than 5% a year, we do not calculate Peter Lynch Fair Value.

Please note that we use the 5-year average growth rate of EBITDA per share as the growth rate for non-bank companies, as EBITDA growth is subject to less manipulations than net earnings per share. For banks, we use the 5-year average growth rate of Book Value per share as the growth rate. The reason is that EBITDA is not applicable to Banks and Book value is a relative important measurement for Banks. In the calculation, PEG=1 because Peter Lynch thinks that the fair P/E ratio of the growth stock is equal to its earnings growth rate.

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 kr5.54 is trading 59% below its estimated GF Value™ of kr13.51. GuruFocus considers Summa Defence Oyj to be Possible Value Trap.

Key valuation signals for OSTO:SUMMAS:

  • Peter Lynch Fair Value: N/A
  • GF Value™: kr13.51 vs. price of kr5.54 (59% below fair value)
  • GF Score™: 48/100 with 6 warning signs

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

Peter Lynch Fair Value is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

kr5.54
Price
kr13.51
GF Value