Thessaloniki Port AuthorityATH:OLTH +1.04%90 Operating Margin % is 35.56% as of Dec. 2025, which is 12% above its 10-year median of 31.66. GuruFocus rates ATH:OLTH with a GF Score™ of 90/100 and a GF Value™ of €31.52 (Modestly Overvalued). The stock has 4 warning signs investors should review. Among 1,007 Transportation companies, Thessaloniki Port Authority ranks better than 94.24% on this metric.
Thessaloniki Port Authority (ATH:OLTH) Operating Margin % Explanation
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.
Thessaloniki Port Authority Operating Margin % Related Terms
Thessaloniki Port Authority Operating Margin % Historical Data
* 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.
Thessaloniki Port Authority Operating Margin % Chart
Thessaloniki Port Authority Operating Margin % Competitor Comparison
For the Marine Shipping subindustry, Thessaloniki Port Authority'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.
Thessaloniki Port Authority Operating Margin % vs Transportation Industry
For the Transportation industry and Industrials sector, Thessaloniki Port Authority's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Thessaloniki Port Authority's Operating Margin % falls into.
Thessaloniki Port Authority Operating Margin % Calculation
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.
Thessaloniki Port Authority'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.
Thessaloniki Port Authority (ATH:OLTH) has a Operating Margin % of 35.56% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Thessaloniki Port Authority and its competitors. This is 12% above median its historical median of 31.66. Over the past decade, Thessaloniki Port Authority's Operating Margin % has ranged from 20.81 to 37.19. According to the industry distribution chart, Thessaloniki Port Authority ranks #58 out of 1007 companies in the Transportation industry, placing it in the top 5.8%.
Is Thessaloniki Port Authority's Operating Margin % too high?
Thessaloniki Port Authority's current Operating Margin % of 35.56% is 12% above median its 10-year median of 31.66. Over the past 10 years, this metric has ranged from a low of 20.81 to a high of 37.19. The Transportation industry median Operating Margin % is 7.36. Thessaloniki Port Authority's value of 35.56% is 383.2% above this industry median. Based on the distribution chart, Thessaloniki Port Authority ranks #58 out of 1007 companies in the Transportation industry, which is in the top quartile — a strong position relative to peers. Overall, Thessaloniki Port Authority has a GF Score™ of 90/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Thessaloniki Port Authority's Operating Margin % compare to competitors?
According to the Transportation industry distribution chart, Thessaloniki Port Authority ranks #58 out of 1007 companies for Operating Margin %. This places Thessaloniki Port Authority in the top 6% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 7.36. Thessaloniki Port Authority's value of 35.56% is 383.2% above this benchmark. Historically, Thessaloniki Port Authority's own Operating Margin % has ranged from 20.81 to 37.19 over the past decade. While the company's 10-year median is 31.66 vs. the industry median of 7.36, Thessaloniki Port Authority 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 Operating Margin % for a Transportation company?
The median Operating Margin % among Transportation companies is 7.36, based on 1,007 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. Thessaloniki Port Authority's current Operating Margin % of 35.56% is 383.2% 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 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 Thessaloniki Port Authority and its competitors. For the Transportation industry, the median Operating Margin % is 7.36 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Thessaloniki Port Authority's current Operating Margin % is 35.56%, which is 12% above median its own 10-year median of 31.66. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Thessaloniki Port Authority stock overvalued right now?
Based on GuruFocus' analysis, Thessaloniki Port Authority (ATH:OLTH) is currently considered Modestly Overvalued. The stock's GF Value™ is €31.52, compared to a current price of €39.00 — trading 23.7% above its estimated fair value. The current Operating Margin % is 35.56%, which is 12% above median its 10-year median of 31.66 and 383.2% above the Transportation industry median of 7.36. Thessaloniki Port Authority's overall GF Score™ is 90/100 with 4 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 Thessaloniki Port Authority (ATH:OLTH), the current Operating Margin % is 35.56% 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 Thessaloniki Port Authority (ATH:OLTH) Overvalued in 2026?
Based on GuruFocus' analysis, Thessaloniki Port Authority stock appears to be overvalued.
The current stock price of €39.00 is trading 23.7% above its estimated GF Value™ of €31.52.
GuruFocus considers Thessaloniki Port Authority to be Modestly Overvalued.
Key valuation signals for ATH:OLTH:
Operating Margin %: 35.56% (12% above median its 10-year median of 31.66)
GF Value™: €31.52 vs. price of €39.00 (23.7% above fair value)
Industry Position: 383.2% above the Transportation median (#58 of 1007)
No single metric tells the full story. See the ATH:OLTH stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Thessaloniki Port Authority SA operates in the sector of auxiliary activities related to transportation, providing services at the Port of Thessaloniki, including loading and unloading of cargo, storage, port services and passenger traffic. Its business activities include services for unitized cargoes (containers), conventional cargoes (bulk, general and RO-RO), coastal and cruise passengers, vessels (anchoring, mooring, berthing and other services), users of port and non-port facilities including car parking operations, and intermodal transport services (dry-port) through the Company and its subsidiary ThPA Sofia EAD. The Company's operating segments are Container Terminal, Conventional Cargo, Passenger Traffic, Exploitation of Sites and Intermodal.
90GF Score
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