Siminn hfOISE:SIMINN +0.42%88 Operating Margin % is 5.89% as of Mar. 2026, which is 50% below its 10-year median of 11.75. GuruFocus rates OISE:SIMINN with a GF Score™ of 88/100 and a GF Value™ of kr15.09 (Modestly Undervalued). The stock has 3 warning signs investors should review. Among 367 Telecommunication Services companies, Siminn hf ranks better than 55.86% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. Siminn hf's Operating Income for the
three
months ended in Mar. 2026 was kr416 Mil. Siminn hf's Revenue for the
three
months ended in Mar. 2026 was kr7,058 Mil. Therefore, Siminn hf's Operating Margin % for the quarter that ended in Mar. 2026 was 5.89%.
Good Sign:
Siminn hf operating margin is expanding. Margin expansion is usually a good sign.
The historical rank and industry rank for Siminn hf's Operating Margin % or its related term are showing as below:
OISE:SIMINN'
s Operating Margin % Range Over the Past 10 Years
Min: 8.29 Med: 11.75 Max: 17.57
Current: 11.99
OISE:SIMINN's Operating Margin % is ranked better than 55.86% of 367
companies
in the Telecommunication Services industry
Industry Median: 9.73
vs OISE:SIMINN: 11.99
Siminn hf's 5-Year Average Operating Margin % Growth Rate was 2.80% per year.
Siminn hf's Operating Income for the
three
months ended in Mar. 2026 was kr416 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was kr3,364 Mil.
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Siminn hf Operating Margin % Related Terms
Siminn hf Operating Margin % Historical Data
* Premium members only.
The historical data trend for Siminn hf's Operating Margin % 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.
OISE:SIMINN vs TMUS, VZ, T: Operating Margin % Comparison
For the Telecom Services subindustry, Siminn hf's Operating Margin %, along with its competitors' market caps and Operating Margin % 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.
Siminn hf Operating Margin % vs Telecommunication Services Industry
For the Telecommunication Services industry and Communication Services sector, Siminn hf's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Siminn hf's Operating Margin % falls into.
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
Siminn hf's Operating Margin % for the fiscal year that ended in Dec. 2025 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.
Siminn hf (OISE:SIMINN) has a Operating Margin % of 5.89% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Siminn hf and its competitors. This is 50% below median its historical median of 11.75. Over the past decade, Siminn hf's Operating Margin % has ranged from 8.29 to 17.57. According to the industry distribution chart, Siminn hf ranks #162 out of 367 companies in the Telecommunication Services industry, placing it in the top 44.1%.
Is Siminn hf's Operating Margin % too high?
Siminn hf's current Operating Margin % of 5.89% is 50% below median its 10-year median of 11.75. Over the past 10 years, this metric has ranged from a low of 8.29 to a high of 17.57. The Telecommunication Services industry median Operating Margin % is 9.73. Siminn hf's value of 5.89% is 39.5% below this industry median. Based on the distribution chart, Siminn hf ranks #162 out of 367 companies in the Telecommunication Services industry, which is above the industry midpoint. Overall, Siminn hf has a GF Score™ of 88/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Siminn hf's Operating Margin % compare to TMUS and VZ?
According to the Telecommunication Services industry distribution chart, Siminn hf ranks #162 out of 367 companies for Operating Margin %. This puts Siminn hf in the upper half of its industry. The industry median Operating Margin % is 9.73. Siminn hf's value of 5.89% is 39.5% below this benchmark. Historically, Siminn hf's own Operating Margin % has ranged from 8.29 to 17.57 over the past decade. While the company's 10-year median is 11.75 vs. the industry median of 9.73, Siminn hf has consistently been below 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 Operating Margin % for a Telecommunication Services company?
The median Operating Margin % among Telecommunication Services companies is 9.73, based on 367 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Siminn hf's current Operating Margin % of 5.89% is 39.5% below 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 Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Siminn hf and its competitors. For the Telecommunication Services industry, the median Operating Margin % is 9.73 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Siminn hf's current Operating Margin % is 5.89%, which is 50% below median its own 10-year median of 11.75. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Siminn hf stock overvalued right now?
Based on GuruFocus' analysis, Siminn hf (OISE:SIMINN) is currently considered Modestly Undervalued. The stock's GF Value™ is kr15.09, compared to a current price of kr11.95 — trading 20.8% below its estimated fair value. The current Operating Margin % is 5.89%, which is 50% below median its 10-year median of 11.75 and 39.5% below the Telecommunication Services industry median of 9.73. Siminn hf's overall GF Score™ is 88/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Siminn hf (OISE:SIMINN), the current Operating Margin % is 5.89% as of Mar. 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 Siminn hf (OISE:SIMINN) Overvalued in 2026?
Based on GuruFocus' analysis, Siminn hf stock appears to be undervalued.
The current stock price of kr11.95 is trading 20.8% below its estimated GF Value™ of kr15.09.
GuruFocus considers Siminn hf to be Modestly Undervalued.
Key valuation signals for OISE:SIMINN:
Operating Margin %: 5.89% (50% below median its 10-year median of 11.75)
GF Value™: kr15.09 vs. price of kr11.95 (20.8% below fair value)
Industry Position: 39.5% below the Telecommunication Services median (#162 of 367)
No single metric tells the full story. See the OISE:SIMINN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Siminn hf is an Iceland-based telecommunications company engaged in offering communication services. The operating segments of the company are Mobile, Internet, and Network; TV; Equipment sales; and Others. It derives a majority of the revenue from the Internet and Network segment, which involves revenue from data service, including xDSL service, GPON, Internet, IP net, core network, local loop, and access network. The Mobile segment involves revenue from mobile services in Iceland and abroad, whether traditional GSM service, satellite service, wholesale mobile service, or other mobile services.
88GF Score
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