Iron MountainMEX:IRM1 85 Operating Margin % is 20.96% as of Mar. 2026, which is 8% above its 10-year median of 19.43. GuruFocus rates MEX:IRM1 with a GF Score™ of 85/100 and a GF Value™ of MXN1,586.04. The stock has 10 warning signs investors should review. Among 750 REITs companies, Iron Mountain ranks worse than 80.8% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. Iron Mountain's Operating Income for the
three
months ended in Mar. 2026 was MXN7,317 Mil. Iron Mountain's Revenue for the
three
months ended in Mar. 2026 was MXN34,914 Mil. Therefore, Iron Mountain's Operating Margin % for the quarter that ended in Mar. 2026 was 20.96%.
Good Sign:
Iron Mountain Inc operating margin is expanding. Margin expansion is usually a good sign.
The historical rank and industry rank for Iron Mountain's Operating Margin % or its related term are showing as below:
MEX:IRM1'
s Operating Margin % Range Over the Past 10 Years
Min: 17.99 Med: 19.43 Max: 20.55
Current: 20.55
MEX:IRM1's Operating Margin % is ranked worse than 80.8% of 750
companies
in the REITs industry
Industry Median: 52.67
vs MEX:IRM1: 20.55
Iron Mountain's 5-Year Average Operating Margin % Growth Rate was 0.80% per year.
Iron Mountain's Operating Income for the
three
months ended in Mar. 2026 was MXN7,317 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was MXN27,208 Mil.
Iron Mountain (MEX:IRM1) 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.
Iron Mountain Operating Margin % Related Terms
Iron Mountain Operating Margin % Historical Data
* Premium members only.
The historical data trend for Iron Mountain'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:IRM1 vs CCI, SBAC, WY: Operating Margin % Comparison
For the REIT - Specialty subindustry, Iron Mountain'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.
Iron Mountain Operating Margin % vs REITs Industry
For the REITs industry and Real Estate sector, Iron Mountain's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Iron Mountain'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.
Iron Mountain'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.
Iron Mountain (MEX:IRM1) has a Operating Margin % of 20.96% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Iron Mountain and its competitors. This is near median its historical median of 19.43. Over the past decade, Iron Mountain's Operating Margin % has ranged from 17.99 to 20.55. According to the industry distribution chart, Iron Mountain ranks #606 out of 750 companies in the REITs industry, placing it in the top 80.8%.
Is Iron Mountain's Operating Margin % too high?
Iron Mountain's current Operating Margin % of 20.96% is near median its 10-year median of 19.43. Over the past 10 years, this metric has ranged from a low of 17.99 to a high of 20.55. The REITs industry median Operating Margin % is 52.67. Iron Mountain's value of 20.96% is 60.2% below this industry median. Based on the distribution chart, Iron Mountain ranks #606 out of 750 companies in the REITs industry, which is in the bottom quartile relative to peers. Overall, Iron Mountain has a GF Score™ of 85/100, reflecting its overall financial health beyond just this single metric.
How does Iron Mountain's Operating Margin % compare to CCI and SBAC?
According to the REITs industry distribution chart, Iron Mountain ranks #606 out of 750 companies for Operating Margin %. This places Iron Mountain in the lower half of its industry. The industry median Operating Margin % is 52.67. Iron Mountain's value of 20.96% is 60.2% below this benchmark. Historically, Iron Mountain's own Operating Margin % has ranged from 17.99 to 20.55 over the past decade. While the company's 10-year median is 19.43 vs. the industry median of 52.67, Iron Mountain 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 REITs company?
The median Operating Margin % among REITs companies is 52.67, based on 750 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. Iron Mountain's current Operating Margin % of 20.96% is 60.2% 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 Iron Mountain and its competitors. For the REITs industry, the median Operating Margin % is 52.67 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Iron Mountain's current Operating Margin % is 20.96%, which is near median its own 10-year median of 19.43. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Iron Mountain stock overvalued right now?
Iron Mountain (MEX:IRM1) has a current Operating Margin % of 20.96%. The stock's GF Value™ is MXN1,586.04, compared to a current price of MXN1,964.06 — trading 23.8% above its estimated fair value. The current Operating Margin % is 20.96%, which is near median its 10-year median of 19.43 and 60.2% below the REITs industry median of 52.67. Iron Mountain's overall GF Score™ is 85/100 with 10 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 Iron Mountain (MEX:IRM1), the current Operating Margin % is 20.96% 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 Iron Mountain (MEX:IRM1) Overvalued in 2026?
Based on GuruFocus' analysis, Iron Mountain stock appears to be overvalued.
The current stock price of MXN1,964.06 is trading 23.8% above its estimated GF Value™ of MXN1,586.04.
Key valuation signals for MEX:IRM1:
Operating Margin %: 20.96% (near median its 10-year median of 19.43)
GF Value™: MXN1,586.04 vs. price of MXN1,964.06 (23.8% above fair value)
Industry Position: 60.2% below the REITs median (#606 of 750)
No single metric tells the full story. See the MEX:IRM1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Iron Mountain Inc is an information management services provider organized and operated as a real estate investment trust. The company offers solutions to its clients to address their information management, digital transformation, information security, data center, and asset lifecycle management (ALM) needs. Its customers come from various industries, including commercial, legal, financial, healthcare, technology, etc. The company has two reportable segments: Global Records and Information Management (Global RIM) and Global Data Center. Maximum revenue is generated from the Global RIM segment, which offers data and records management, secure shredding, consumer storage, and other related services. Geographically, the company generates maximum revenue from the United States.
85GF Score
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