Summa Defence Oyj (OSTO:SUMMAS) 3-1 Month Momentum %: -19.25% (As of Sep. 04, 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
47 GF Score
Price kr4.68
GF Value kr16.80
Valuation Possible Value Trap
! 6 Warning Signs
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What is Summa Defence Oyj 3-1 Month Momentum %?

Summa Defence Oyj OSTO:SUMMAS +4.47% 47 3-1 Month Momentum % is -19.25% as of Sep. 04, 2026. GuruFocus rates OSTO:SUMMAS with a GF Score™ of 47/100 and a GF Value™ of kr16.80 (Possible Value Trap). The stock has 6 warning signs investors should review. Among 354 Aerospace & Defense companies, Summa Defence Oyj ranks worse than 74.29% on this metric.

3-1 Month Momentum % is the total return of the stock from 3-month ago to 1-month ago. As of today (2026-09-04), Summa Defence Oyj's 3-1 Month Momentum % is -19.25%.

The industry rank for Summa Defence Oyj's 3-1 Month Momentum % or its related term are showing as below:

OSTO:SUMMAS's 3-1 Month Momentum % is ranked worse than
74.29% of 354 companies
in the Aerospace & Defense industry
Industry Median: -6.04 vs OSTO:SUMMAS: -19.25

Summa Defence Oyj  (OSTO:SUMMAS) 3-1 Month Momentum % Explanation

Momentum investing is a trading strategy in which investors buy securities that are rising and sell before the prices start to go back down. The 3-1 Month Momentum % measures the total return to a stock over the past three months, but ignores the previous month.

The reason why the most recent month’s return dropped related to the short-term reversal effect associated with momentum. There is an academic finding that short-term momentum actually has a reversal effect, whereby the previous winners (measured over the past months) do poorly the next month, while the previous losers do well the next month. In order to eliminate the short-term reversal effect, the previous month return was not included in this calculation.


Summa Defence Oyj 3-1 Month Momentum % Related Terms


OSTO:SUMMAS vs SPCX, GE, RTX: 3-1 Month Momentum % Comparison

For the Aerospace & Defense subindustry, Summa Defence Oyj's 3-1 Month Momentum %, along with its competitors' market caps and 3-1 Month Momentum % 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 3-1 Month Momentum % vs Aerospace & Defense Industry

For the Aerospace & Defense industry and Industrials sector, Summa Defence Oyj's 3-1 Month Momentum % distribution charts can be found below:

* The bar in red indicates where Summa Defence Oyj's 3-1 Month Momentum % falls into.


OSTO:SUMMAS
47GF Score
Summa Defence Oyj OSTO:SUMMAS
3-1 Month Momentum % is just one metric. See GF Score™, valuation, warning signs, and more.
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Summa Defence Oyj  (OSTO:SUMMAS) 3-1 Month Momentum % Calculation

3-1 Month Momentum % is calculated as following:

3-1 Month Momentum %=( Price 1-month ago / Price 3-month ago - 1 ) * 100 %

* 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.

Frequently Asked Questions Learn more about 3-1 Month Momentum % →
What does a 3-1 Month Momentum % of -19.25% mean?
Summa Defence Oyj (OSTO:SUMMAS) has a 3-1 Month Momentum % of -19.25% as of Sep. 04, 2026. 3-1 Month Momentum measures the total return of the stock from 3-month ago to 1-month ago. View historical data on Summa Defence Oyj and its competitors. According to the industry distribution chart, Summa Defence Oyj ranks #263 out of 354 companies in the Aerospace & Defense industry, placing it in the top 74.3%.
Is Summa Defence Oyj's 3-1 Month Momentum % too high?
Summa Defence Oyj's current 3-1 Month Momentum % is -19.25%. Based on the distribution chart, Summa Defence Oyj ranks #263 out of 354 companies in the Aerospace & Defense industry, which is below the industry midpoint. Overall, Summa Defence Oyj has a GF Score™ of 47/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Summa Defence Oyj's 3-1 Month Momentum % compare to SPCX and GE?
According to the Aerospace & Defense industry distribution chart, Summa Defence Oyj ranks #263 out of 354 companies for 3-1 Month Momentum %. This places Summa Defence Oyj in the lower half of its industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 3-1 Month Momentum % for an Aerospace & Defense company?
A good 3-1 Month Momentum % depends on the Aerospace & Defense industry context. However, 3-1 Month Momentum % 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 3-1 Month Momentum % mean?
A high 3-1 Month Momentum % can signal that a stock is expensive relative to its fundamentals. 3-1 Month Momentum measures the total return of the stock from 3-month ago to 1-month ago. View historical data on Summa Defence Oyj and its competitors. Summa Defence Oyj's current 3-1 Month Momentum % is -19.25%. 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 kr16.80, compared to a current price of kr4.68 — trading 72.2% below its estimated fair value. The current 3-1 Month Momentum % is -19.25%. Summa Defence Oyj's overall GF Score™ is 47/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-1 Month Momentum % calculated?
3-1 Month Momentum % is calculated from a company's financial statements. For Summa Defence Oyj (OSTO:SUMMAS), the current 3-1 Month Momentum % is -19.25% as of Sep. 04, 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 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 kr4.68 is trading 72.2% below its estimated GF Value™ of kr16.80. GuruFocus considers Summa Defence Oyj to be Possible Value Trap.

Key valuation signals for OSTO:SUMMAS:

  • 3-1 Month Momentum %: -19.25%
  • GF Value™: kr16.80 vs. price of kr4.68 (72.2% below fair value)
  • GF Score™: 47/100 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.
47GF Score

Get the complete analysis for OSTO:SUMMAS

3-1 Month Momentum % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

kr4.68
Price
kr16.80
GF Value