Thai Plaspac PCLBKK:TPAC +0.56%89 Operating Margin % is 10.76% as of Mar. 2026, which is 16% above its 10-year median of 9.29. GuruFocus rates BKK:TPAC with a GF Score™ of 89/100 and a GF Value™ of ฿10.39 (Modestly Undervalued). The stock has 2 warning signs investors should review. Among 389 Packaging & Containers companies, Thai Plaspac PCL ranks better than 83.8% on this metric.
The historical rank and industry rank for Thai Plaspac PCL's Operating Margin % or its related term are showing as below:
BKK:TPAC'
s Operating Margin % Range Over the Past 10 Years
Min: 2.02 Med: 9.29 Max: 13.44
Current: 11.57
BKK:TPAC's Operating Margin % is ranked better than 83.8% of 389
companies
in the Packaging & Containers industry
Industry Median: 5.27
vs BKK:TPAC: 11.57
Thai Plaspac PCL's 5-Year Average Operating Margin % Growth Rate was -0.80% 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.
Thai Plaspac PCL Operating Margin % Related Terms
Thai Plaspac PCL Operating Margin % Historical Data
* Premium members only.
The historical data trend for Thai Plaspac 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:TPAC vs SW, PKG, IP: Operating Margin % Comparison
For the Packaging & Containers subindustry, Thai Plaspac 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.
Thai Plaspac PCL Operating Margin % vs Packaging & Containers Industry
For the Packaging & Containers industry and Consumer Cyclical sector, Thai Plaspac PCL's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Thai Plaspac 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.
Thai Plaspac 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.
Thai Plaspac PCL (BKK:TPAC) has a Operating Margin % of 10.76% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Thai Plaspac PCL and its competitors. This is 16% above median its historical median of 9.29. Over the past decade, Thai Plaspac PCL's Operating Margin % has ranged from 2.02 to 13.44. According to the industry distribution chart, Thai Plaspac PCL ranks #63 out of 389 companies in the Packaging & Containers industry, placing it in the top 16.2%.
Is Thai Plaspac PCL's Operating Margin % too high?
Thai Plaspac PCL's current Operating Margin % of 10.76% is 16% above median its 10-year median of 9.29. Over the past 10 years, this metric has ranged from a low of 2.02 to a high of 13.44. The Packaging & Containers industry median Operating Margin % is 5.27. Thai Plaspac PCL's value of 10.76% is 104.2% above this industry median. Based on the distribution chart, Thai Plaspac PCL ranks #63 out of 389 companies in the Packaging & Containers industry, which is in the top quartile — a strong position relative to peers. Overall, Thai Plaspac PCL has a GF Score™ of 89/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Thai Plaspac PCL's Operating Margin % compare to SW and PKG?
According to the Packaging & Containers industry distribution chart, Thai Plaspac PCL ranks #63 out of 389 companies for Operating Margin %. This places Thai Plaspac PCL in the top 16% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 5.27. Thai Plaspac PCL's value of 10.76% is 104.2% above this benchmark. Historically, Thai Plaspac PCL's own Operating Margin % has ranged from 2.02 to 13.44 over the past decade. While the company's 10-year median is 9.29 vs. the industry median of 5.27, Thai Plaspac 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 5.27, based on 389 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. Thai Plaspac PCL's current Operating Margin % of 10.76% is 104.2% 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 Thai Plaspac PCL and its competitors. For the Packaging & Containers industry, the median Operating Margin % is 5.27 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Thai Plaspac PCL's current Operating Margin % is 10.76%, which is 16% above median its own 10-year median of 9.29. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Thai Plaspac PCL stock overvalued right now?
Based on GuruFocus' analysis, Thai Plaspac PCL (BKK:TPAC) is currently considered Modestly Undervalued. The stock's GF Value™ is ฿10.39, compared to a current price of ฿8.95 — trading 13.9% below its estimated fair value. The current Operating Margin % is 10.76%, which is 16% above median its 10-year median of 9.29 and 104.2% above the Packaging & Containers industry median of 5.27. Thai Plaspac PCL's overall GF Score™ is 89/100 with 2 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 Thai Plaspac PCL (BKK:TPAC), the current Operating Margin % is 10.76% 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 Thai Plaspac PCL (BKK:TPAC) Overvalued in 2026?
Based on GuruFocus' analysis, Thai Plaspac PCL stock appears to be undervalued.
The current stock price of ฿8.95 is trading 13.9% below its estimated GF Value™ of ฿10.39.
GuruFocus considers Thai Plaspac PCL to be Modestly Undervalued.
Key valuation signals for BKK:TPAC:
Operating Margin %: 10.76% (16% above median its 10-year median of 9.29)
GF Value™: ฿10.39 vs. price of ฿8.95 (13.9% below fair value)
Industry Position: 104.2% above the Packaging & Containers median (#63 of 389)
No single metric tells the full story. See the BKK:TPAC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Thai Plaspac PCL is a Thailand-based company that operates in the plastic packaging business. The activity of the group includes the manufacturing and distribution of plastic packaging materials. It offers a wide range of manufacturing capabilities, ranging from packaging design, injection-molding, blow-molding, injection/blow molding in-line inspections, and quality assurance. It serves food, daily products, consumer-household, and other sectors. Geographically, the firm has a business presence in Thailand and Other overseas countries.
89GF Score
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