FCF Margin % is calculated as Free Cash Flow divided by its Revenue. Iron Mountain's Free Cash Flow for the
three
months ended in Mar. 2026 was $-183 Mil. Iron Mountain's Revenue for the
three
months ended in Mar. 2026 was $1,936 Mil. Therefore, Iron Mountain's FCF Margin % for the quarter that ended in Mar. 2026 was -9.43%.
The historical rank and industry rank for Iron Mountain's FCF Margin % or its related term are showing as below:
IRM'
s FCF Margin % Range Over the Past 10 Years
Min: -14.59 Med: 3.85 Max: 12.89
Current: -9.71
During the past 13 years, the highest FCF Margin % of Iron Mountain was 12.89%. The lowest was -14.59%. And the median was 3.85%.
IRM's FCF Margin % is ranked worse than 85.9% of 936
companies
in the REITs industry
Industry Median: 40.025
vs IRM: -9.71
Iron Mountain FCF Margin % Related Terms
Iron Mountain FCF Margin % Historical Data
* Premium members only.
The historical data trend for Iron Mountain's FCF 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.
For the REIT - Specialty subindustry, Iron Mountain's FCF Margin %, along with its competitors' market caps and FCF 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 FCF Margin % vs REITs Industry
For the REITs industry and Real Estate sector, Iron Mountain's FCF Margin % distribution charts can be found below:
* The bar in red indicates where Iron Mountain's FCF Margin % falls into.
* 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 (IRM) has a FCF Margin % of -9.43% as of Mar. 2026. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on Iron Mountain and its competitors. According to the industry distribution chart, Iron Mountain ranks #804 out of 936 companies in the REITs industry, placing it in the top 85.9%.
Is Iron Mountain's FCF Margin % too high?
Iron Mountain's current FCF Margin % is -9.43%. Based on the distribution chart, Iron Mountain ranks #804 out of 936 companies in the REITs industry, which is in the bottom quartile relative to peers. Overall, Iron Mountain has a GF Score™ of 85/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Iron Mountain's FCF Margin % compare to CCI and SBAC?
According to the REITs industry distribution chart, Iron Mountain ranks #804 out of 936 companies for FCF Margin %. This places Iron Mountain in the lower half of its industry. The industry median FCF Margin % is 40.03. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good FCF Margin % for a REITs company?
The median FCF Margin % among REITs companies is 40.03, based on 936 companies in the industry. Companies in the top quartile (top 25%) have a FCF Margin % significantly above this median, while those in the bottom quartile fall well below. However, FCF Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high FCF Margin % mean?
A high FCF Margin % can signal that a stock is expensive relative to its fundamentals. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on Iron Mountain and its competitors. For the REITs industry, the median FCF Margin % is 40.03 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Iron Mountain's current FCF Margin % is -9.43%. 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?
Based on GuruFocus' analysis, Iron Mountain (IRM) is currently considered Modestly Overvalued. The stock's GF Value™ is $107.52, compared to a current price of $132.44 — trading 23.2% above its estimated fair value. The current FCF Margin % is -9.43%. 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 FCF Margin % calculated?
FCF Margin % is calculated from a company's financial statements. For Iron Mountain (IRM), the current FCF Margin % is -9.43% 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 (IRM) Overvalued in 2026?
Based on GuruFocus' analysis, Iron Mountain stock appears to be overvalued.
The current stock price of $132.44 is trading 23.2% above its estimated GF Value™ of $107.52.
GuruFocus considers Iron Mountain to be Modestly Overvalued.
Key valuation signals for IRM:
FCF Margin %: -9.43%
GF Value™: $107.52 vs. price of $132.44 (23.2% above fair value)
No single metric tells the full story. See the IRM 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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FCF Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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