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Siamgas And Petrochemicals PCLBKK:SGP -1.85%62 Operating Margin % is 8.63% as of Mar. 2026, which is 226% above its 10-year median of 2.65. GuruFocus rates BKK:SGP with a GF Score™ of 62/100 and a GF Value™ of ฿6.32 (Modestly Overvalued). The stock has 7 warning signs investors should review. Among 917 Oil & Gas companies, Siamgas And Petrochemicals PCL ranks worse than 63.9% on this metric.
Siamgas And Petrochemicals PCL has recorded a loss in operating income at least once over the past 3 years.
Siamgas And Petrochemicals PCL (BKK:SGP) 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.
Siamgas And Petrochemicals PCL Operating Margin % Related Terms
Siamgas And Petrochemicals PCL 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.
Siamgas And Petrochemicals PCL Operating Margin % Chart
BKK:SGP vs VLO, MPC, PSX: Operating Margin % Comparison
For the Oil & Gas Refining & Marketing subindustry, Siamgas And Petrochemicals PCL'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.
Siamgas And Petrochemicals PCL Operating Margin % vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Siamgas And Petrochemicals PCL's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Siamgas And Petrochemicals PCL's Operating Margin % falls into.
Siamgas And Petrochemicals PCL 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.
* 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.
Siamgas And Petrochemicals PCL (BKK:SGP) has a Operating Margin % of 8.63% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Siamgas And Petrochemicals PCL and its competitors. This is 226% above median its historical median of 2.65. Over the past decade, Siamgas And Petrochemicals PCL's Operating Margin % has ranged from 0.88 to 5.95. According to the industry distribution chart, Siamgas And Petrochemicals PCL ranks #586 out of 917 companies in the Oil & Gas industry, placing it in the top 63.9%.
Is Siamgas And Petrochemicals PCL's Operating Margin % too high?
Siamgas And Petrochemicals PCL's current Operating Margin % of 8.63% is 226% above median its 10-year median of 2.65. Over the past 10 years, this metric has ranged from a low of 0.88 to a high of 5.95. The Oil & Gas industry median Operating Margin % is 6.97. Siamgas And Petrochemicals PCL's value of 8.63% is 23.8% above this industry median. Based on the distribution chart, Siamgas And Petrochemicals PCL ranks #586 out of 917 companies in the Oil & Gas industry, which is below the industry midpoint. Overall, Siamgas And Petrochemicals PCL has a GF Score™ of 62/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Siamgas And Petrochemicals PCL's Operating Margin % compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Siamgas And Petrochemicals PCL ranks #586 out of 917 companies for Operating Margin %. This places Siamgas And Petrochemicals PCL in the lower half of its industry. The industry median Operating Margin % is 6.97. Siamgas And Petrochemicals PCL's value of 8.63% is 23.8% above this benchmark. Historically, Siamgas And Petrochemicals PCL's own Operating Margin % has ranged from 0.88 to 5.95 over the past decade. While the company's 10-year median is 2.65 vs. the industry median of 6.97, Siamgas And Petrochemicals PCL 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 an Oil & Gas company?
The median Operating Margin % among Oil & Gas companies is 6.97, based on 917 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. Siamgas And Petrochemicals PCL's current Operating Margin % of 8.63% is 23.8% 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 Siamgas And Petrochemicals PCL and its competitors. For the Oil & Gas industry, the median Operating Margin % is 6.97 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Siamgas And Petrochemicals PCL's current Operating Margin % is 8.63%, which is 226% above median its own 10-year median of 2.65. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Siamgas And Petrochemicals PCL stock overvalued right now?
Based on GuruFocus' analysis, Siamgas And Petrochemicals PCL (BKK:SGP) is currently considered Modestly Overvalued. The stock's GF Value™ is ฿6.32, compared to a current price of ฿7.95 — trading 25.8% above its estimated fair value. The current Operating Margin % is 8.63%, which is 226% above median its 10-year median of 2.65 and 23.8% above the Oil & Gas industry median of 6.97. Siamgas And Petrochemicals PCL's overall GF Score™ is 62/100 with 7 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 Siamgas And Petrochemicals PCL (BKK:SGP), the current Operating Margin % is 8.63% 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 Siamgas And Petrochemicals PCL (BKK:SGP) Overvalued in 2026?
Based on GuruFocus' analysis, Siamgas And Petrochemicals PCL stock appears to be overvalued.
The current stock price of ฿7.95 is trading 25.8% above its estimated GF Value™ of ฿6.32.
GuruFocus considers Siamgas And Petrochemicals PCL to be Modestly Overvalued.
Key valuation signals for BKK:SGP:
Operating Margin %: 8.63% (226% above median its 10-year median of 2.65)
GF Value™: ฿6.32 vs. price of ฿7.95 (25.8% above fair value)
Industry Position: 23.8% above the Oil & Gas median (#586 of 917)
No single metric tells the full story. See the BKK:SGP stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Siamgas And Petrochemicals PCL Business Description
Siamgas And Petrochemicals PCL is engaged in trading petroleum and petrochemicals, transportation services by land and ship and oil depots, and port services. Its segments include Petroleum & petrochemical products, which is engaged in trading of petroleum for household cooking, industry & transportation businesses, and petrochemical trading; Transportation services, which provides transportation services by land & ship; and Others segment, which is into Cylinder manufacturing, holding business and oil depots & port services. Its operations are carried out in Thailand, and Overseas. The company generates the majority of its revenue from the overseas market.
62GF Score
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