10x Insights
Loading account…
Companies / Real Estate / Iron Mountain
IRM

Iron Mountain

Real EstateREITsS&P 500
Ticker IRMPORTSMOUTH, NHFiscal year ends DecemberBook value per share $-4.28Diluted shares 299.3M

Iron Mountain Incorporated (NYSE: IRM) operates as a global leader in information management services, serving more than 240,000 customers across 61 countries. Founded in 1951 in an underground facility near Hudson, New York, the company has evolved from a records storage provider into a diversified enterprise… From the company’s description.

Fiscal year 2025 · ends 12-31Changes are against fiscal 2024The amber dot is the latest twelve months, to 2026-06-30
Sales & profitability
$6.90BFY2025
+12.2% year over year
Last 12 mo $7.56B
16.86%FY2025
+0.4 percentage points
Last 12 mo 18.76%
$152.25MFY2025
−17.1% year over year
Last 12 mo $434.46M
-34.71%FY2025
+33.2 percentage points
Last 12 mo -32.68%
Cash & financing
$1.34BFY2025
+12.0% year over year
Last 12 mo $1.66B
$-931.63MFY2025
−56.6% year over year
Last 12 mo $-490.92M
-16.75FY2025
Was -27.27× a year earlier
Last 12 mo -13.54
297.8MFY2025
+0.5% year over year
Last 12 mo 299.3M

Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.

What Iron Mountain does

In the company’s own words

Iron Mountain Incorporated (NYSE: IRM) operates as a global leader in information management services, serving more than 240,000 customers across 61 countries. Founded in 1951 in an underground facility near Hudson, New York, the company has evolved from a records storage provider into a diversified enterprise offering comprehensive solutions that span physical and digital information management, data center operations, and asset lifecycle management.

The company generates approximately $6.9 billion in annual revenue through three primary business segments. The Global Records and Information Management Business encompasses records management, data management, global digital solutions including the Insight Digital Experience Platform, secure shredding, media and archive services, and consumer storage offerings. The Global Data Center Business provides enterprise-class facilities and hyperscale-ready capacity, operating 31 data centers across 21 global markets with 488 megawatts of leasable capacity and an additional 852 megawatts under construction or held for development. Corporate and Other includes asset lifecycle management services and fine arts storage, along with corporate functions.

Iron Mountain operates approximately 1,340 locations globally and manages over 98 million square feet of real estate worldwide, with owned properties spanning more than 24 million square feet. The company stores more than 740 million cubic feet of physical volume and maintains a highly diversified customer base with no single customer representing more than approximately three percent of revenue. Approximately 95 percent of the Fortune 1000 trust Iron Mountain with their information management needs.

The company employs approximately 29,400 people globally, with roughly 11,700 in the United States and 17,700 internationally. Iron Mountain operates as a real estate investment trust for federal income tax purposes and is a constituent of the Standard & Poor's 500 Index. The company's website is www.ironmountain.com. The business model emphasizes recurring revenue streams, with contracted storage rental agreements typically ranging from one to five years, complemented by cross-selling opportunities across its integrated solution portfolio serving commercial, legal, financial, healthcare, technology, insurance, life sciences, energy, and government sectors.

Company details
Sector
Real Estate
Industry (SIC)
REITs
Headquarters
PORTSMOUTH, NH
Fiscal year end
December
CIK
1020569
SIC
6798

Financial performance, year by year

Fiscal 2013–2025 · USD
$-756.25M$1.51B$3.78B$6.05B$8.32B2013201420152016201720182019202020212022202320242025Last 12 moLast 12 monthsLast 12 months

The full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.

Ownership

Who owns Iron Mountain — and what changed

Funds as of 2026Q2 · superinvestors as of 2026-06-30

694
funds hold it
0 of 35
superinvestors hold it
$14.39B
held by funds, at market
38.3%
of shares held by funds
13
bond issues held by funds

Largest fund holders · Iron Mountain’s weight in each

VANGUARD REAL ESTATE INDEX FUND
VNQ · VANGUARD SPECIALIZED FUNDS
—of fund net assets
VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.05%of fund net assets
VANGUARD 500 INDEX FUND
VOO · VANGUARD INDEX FUNDS
0.06%of fund net assets
VANGUARD MID-CAP INDEX FUND
VO · VANGUARD INDEX FUNDS
0.35%of fund net assets
iShares Core S&P 500 ETF
IVV · iShares Trust
0.06%of fund net assets

Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.

Iron Mountain’s bonds, as funds hold them

Funds report holding 13 issues of Iron Mountain’s debt, $3.09B at market value — what funds hold, not the company’s total debt. Weighted-average coupon 5.52%, maturing 2027 to 2035.

Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.

Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.

Connected research

Put this business in context.

Compare this company with peers, find it in your funds and follow its financial history with your connected AI:

  • “How do Iron Mountain and its peers compare on margins and cash generation over ten years?”
  • “Where did five years of Iron Mountain's earnings go — cash, debt, buybacks, reinvestment?”
  • “What changed in Iron Mountain's last four quarterly filings that the numbers alone won't show?”
See how it works →All research tools with a subscription. Use your own AI account.