Smurfit WestRockMEX:SW1 N 47 Operating Margin % is 3.98% as of Mar. 2026, which is 63% below its 10-year median of 10.72. GuruFocus rates MEX:SW1 N with a GF Score™ of 47/100 and a GF Value™ of MXN682.34 (Fairly Valued). The stock has 8 warning signs investors should review. Among 393 Packaging & Containers companies, Smurfit WestRock ranks better than 55.47% on this metric.
Smurfit WestRock PLC operating margin has been in a 5-year decline. The average rate of decline per year is -9.3%.
The historical rank and industry rank for Smurfit WestRock's Operating Margin % or its related term are showing as below:
MEX:SW1 N'
s Operating Margin % Range Over the Past 10 Years
Min: 6.17 Med: 10.72 Max: 12.8
Current: 6.17
MEX:SW1 N's Operating Margin % is ranked better than 55.47% of 393
companies
in the Packaging & Containers industry
Industry Median: 5.24
vs MEX:SW1 N: 6.17
Smurfit WestRock's 5-Year Average Operating Margin % Growth Rate was -9.30% 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.
Smurfit WestRock Operating Margin % Related Terms
Smurfit WestRock Operating Margin % Historical Data
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The historical data trend for Smurfit WestRock'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.
MEX:SW1 N vs PKG, AMCR, IP: Operating Margin % Comparison
For the Packaging & Containers subindustry, Smurfit WestRock'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.
Smurfit WestRock Operating Margin % vs Packaging & Containers Industry
For the Packaging & Containers industry and Consumer Cyclical sector, Smurfit WestRock's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Smurfit WestRock'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.
Smurfit WestRock'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.
Smurfit WestRock (MEX:SW1 N) has a Operating Margin % of 3.98% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Smurfit WestRock and its competitors. This is 63% below median its historical median of 10.72. Over the past decade, Smurfit WestRock's Operating Margin % has ranged from 6.17 to 12.80. According to the industry distribution chart, Smurfit WestRock ranks #175 out of 393 companies in the Packaging & Containers industry, placing it in the top 44.5%.
Is Smurfit WestRock's Operating Margin % too high?
Smurfit WestRock's current Operating Margin % of 3.98% is 63% below median its 10-year median of 10.72. Over the past 10 years, this metric has ranged from a low of 6.17 to a high of 12.80. The Packaging & Containers industry median Operating Margin % is 5.24. Smurfit WestRock's value of 3.98% is 24% below this industry median. Based on the distribution chart, Smurfit WestRock ranks #175 out of 393 companies in the Packaging & Containers industry, which is above the industry midpoint. Overall, Smurfit WestRock has a GF Score™ of 47/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Smurfit WestRock's Operating Margin % compare to PKG and AMCR?
According to the Packaging & Containers industry distribution chart, Smurfit WestRock ranks #175 out of 393 companies for Operating Margin %. This puts Smurfit WestRock in the upper half of its industry. The industry median Operating Margin % is 5.24. Smurfit WestRock's value of 3.98% is 24% below this benchmark. Historically, Smurfit WestRock's own Operating Margin % has ranged from 6.17 to 12.80 over the past decade. While the company's 10-year median is 10.72 vs. the industry median of 5.24, Smurfit WestRock 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 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. Smurfit WestRock's current Operating Margin % of 3.98% is 24% 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 Smurfit WestRock 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. Smurfit WestRock's current Operating Margin % is 3.98%, which is 63% below median its own 10-year median of 10.72. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Smurfit WestRock stock overvalued right now?
Based on GuruFocus' analysis, Smurfit WestRock (MEX:SW1 N) is currently considered Fairly Valued. The stock's GF Value™ is MXN682.34, compared to a current price of MXN680.00 — trading 0.3% below its estimated fair value. The current Operating Margin % is 3.98%, which is 63% below median its 10-year median of 10.72 and 24% below the Packaging & Containers industry median of 5.24. Smurfit WestRock's overall GF Score™ is 47/100 with 8 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 Smurfit WestRock (MEX:SW1 N), the current Operating Margin % is 3.98% 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 Smurfit WestRock (MEX:SW1 N) Overvalued in 2026?
Based on GuruFocus' analysis, Smurfit WestRock stock appears to be undervalued.
The current stock price of MXN680.00 is trading 0.3% below its estimated GF Value™ of MXN682.34.
GuruFocus considers Smurfit WestRock to be Fairly Valued.
Key valuation signals for MEX:SW1 N:
Operating Margin %: 3.98% (63% below median its 10-year median of 10.72)
GF Value™: MXN682.34 vs. price of MXN680.00 (0.3% below fair value)
Industry Position: 24% below the Packaging & Containers median (#175 of 393)
No single metric tells the full story. See the MEX:SW1 N stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Smurfit WestRock PLC manufactures corrugated packaging and consumer packaging, such as folding cartons and paperboard. operates a vertically integrated system supplying wood and recovered fiber to produce various grades of board, which are then converted into packaging products. Its main packaging categories include corrugated containers and consumer packaging, with additional products such as solidboard, kraft paper, graphic board, paper sacks, and bag-in-box packaging. The company's geographical segments include North America (including the U.S., Canada and Mexico), Europe, the Middle East and Africa and Asia-Pacific, and Latin America. The majority of the company's revenue is derived from product sales in the North American region.
47GF Score
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