Starflex PCLBKK:SFLEX +2.72%88 Operating Margin % is 15.02% as of Mar. 2026, which is 17% above its 10-year median of 12.81. GuruFocus rates BKK:SFLEX with a GF Score™ of 88/100 and a GF Value™ of ฿3.62 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 393 Packaging & Containers companies, Starflex PCL ranks better than 89.31% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. Starflex PCL's Operating Income for the
three
months ended in Mar. 2026 was ฿74 Mil. Starflex PCL's Revenue for the
three
months ended in Mar. 2026 was ฿491 Mil. Therefore, Starflex PCL's Operating Margin % for the quarter that ended in Mar. 2026 was 15.02%.
Good Sign:
Starflex PCL operating margin is expanding. Margin expansion is usually a good sign.
The historical rank and industry rank for Starflex PCL's Operating Margin % or its related term are showing as below:
BKK:SFLEX'
s Operating Margin % Range Over the Past 10 Years
Min: 4.03 Med: 12.81 Max: 15.67
Current: 13.44
BKK:SFLEX's Operating Margin % is ranked better than 89.31% of 393
companies
in the Packaging & Containers industry
Industry Median: 5.24
vs BKK:SFLEX: 13.44
Starflex PCL's 5-Year Average Operating Margin % Growth Rate was 8.90% per year.
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.
Starflex PCL Operating Margin % Related Terms
Starflex PCL Operating Margin % Historical Data
* Premium members only.
The historical data trend for Starflex PCL'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.
BKK:SFLEX vs SW, PKG, AMCR: Operating Margin % Comparison
For the Packaging & Containers subindustry, Starflex 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.
Starflex PCL Operating Margin % vs Packaging & Containers Industry
For the Packaging & Containers industry and Consumer Cyclical sector, Starflex PCL's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Starflex PCL'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.
Starflex PCL'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.
Starflex PCL (BKK:SFLEX) has a Operating Margin % of 15.02% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Starflex PCL and its competitors. This is 17% above median its historical median of 12.81. Over the past decade, Starflex PCL's Operating Margin % has ranged from 4.03 to 15.67. According to the industry distribution chart, Starflex PCL ranks #42 out of 393 companies in the Packaging & Containers industry, placing it in the top 10.7%.
Is Starflex PCL's Operating Margin % too high?
Starflex PCL's current Operating Margin % of 15.02% is 17% above median its 10-year median of 12.81. Over the past 10 years, this metric has ranged from a low of 4.03 to a high of 15.67. The Packaging & Containers industry median Operating Margin % is 5.24. Starflex PCL's value of 15.02% is 186.6% above this industry median. Based on the distribution chart, Starflex PCL ranks #42 out of 393 companies in the Packaging & Containers industry, which is in the top quartile — a strong position relative to peers. Overall, Starflex PCL has a GF Score™ of 88/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Starflex PCL's Operating Margin % compare to SW and PKG?
According to the Packaging & Containers industry distribution chart, Starflex PCL ranks #42 out of 393 companies for Operating Margin %. This places Starflex PCL in the top 11% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 5.24. Starflex PCL's value of 15.02% is 186.6% above this benchmark. Historically, Starflex PCL's own Operating Margin % has ranged from 4.03 to 15.67 over the past decade. While the company's 10-year median is 12.81 vs. the industry median of 5.24, Starflex 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 a Packaging & Containers company?
The median Operating Margin % among Packaging & Containers companies is 5.24, based on 393 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. Starflex PCL's current Operating Margin % of 15.02% is 186.6% 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 Starflex PCL and its competitors. For the Packaging & Containers industry, the median Operating Margin % is 5.24 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Starflex PCL's current Operating Margin % is 15.02%, which is 17% above median its own 10-year median of 12.81. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Starflex PCL stock overvalued right now?
Based on GuruFocus' analysis, Starflex PCL (BKK:SFLEX) is currently considered Modestly Undervalued. The stock's GF Value™ is ฿3.62, compared to a current price of ฿3.02 — trading 16.6% below its estimated fair value. The current Operating Margin % is 15.02%, which is 17% above median its 10-year median of 12.81 and 186.6% above the Packaging & Containers industry median of 5.24. Starflex PCL's overall GF Score™ is 88/100 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 Starflex PCL (BKK:SFLEX), the current Operating Margin % is 15.02% 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 Starflex PCL (BKK:SFLEX) Overvalued in 2026?
Based on GuruFocus' analysis, Starflex PCL stock appears to be undervalued.
The current stock price of ฿3.02 is trading 16.6% below its estimated GF Value™ of ฿3.62.
GuruFocus considers Starflex PCL to be Modestly Undervalued.
Key valuation signals for BKK:SFLEX:
Operating Margin %: 15.02% (17% above median its 10-year median of 12.81)
GF Value™: ฿3.62 vs. price of ฿3.02 (16.6% below fair value)
Industry Position: 186.6% above the Packaging & Containers median (#42 of 393)
No single metric tells the full story. See the BKK:SFLEX stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Starflex PCL is engaged in the manufacture and distribution of flexible packaging. The company provides packaging for home and personal products, medical products, and food industries. There are three operating business segments: Packaging products for food, Packaging products for non-food, and Other segment. The Non-food packaging segment generates a vast majority of the revenues. The company operates in Thailand only.
88GF Score
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