Iron Mountain stock (IRM)
Iron Mountain stock (IRM) closed at $113.75 on Nov 13, 2026, up 37.1% year to date, for a market capitalization of $33.9B. Revenue of $7.8B over the last twelve months; in the latest quarter, revenue up 13.5% year on year, with a 20.6% operating margin. Filed with the SEC, as of Sep 30, 2026.
- Last close
- $113.75 (2026-11-13)
- Year to date
- +37.1%
- 52-week range
- $77.77 – $134.68
- Market capitalization
- $33.9B
- Dividend yield
- 3.04%
- Revenue (TTM)
- $7.8B
- Revenue growth
- +13.5%
- Operating margin
- 20.6%
- Price / sales
- 4.3
- EV / revenue
- 6.6
- Figures as of
- 2026-09-30
- Named institutional holders
- 138
- Declared ownership
- 57.0% – 78.2%
- Exchange
- NYSE
- Headquarters
- Portsmouth, New Hampshire
- Fiscal year ends
- December
- Industry (SEC)
- Real Estate Investment Trusts
- Registered with the SEC as
- IRON MOUNTAIN INC (CIK 1020569)
Who owns Iron Mountain?
138 institutional holders named from SEC filings, together declaring between 57.0% and 78.2% of the shares outstanding, as of Nov 6, 2026. The largest named holders of Iron Mountain stock are Vanguard (16.1%), BlackRock (10.9%), State Street (5.7%), Cohen & Steers, Inc. (4.0%) and Geode Capital (3.0%). From Mar 31, 2026 to Jun 30, 2026, 135 managers opened a position, 436 added, 378 reduced and 58 sold out; the biggest sellers were Cohen & Steers, Inc. and Daiwa Securities Group Inc., the biggest buyers UBS and Vanguard.
Iron Mountain shareholders: institutions, insiders and funds
Iron Mountain dividend
Iron Mountain pays a quarterly dividend: $3.46 per share over the last twelve months, a 3.04% yield at the $113.80 close of Nov 13, 2026.
Iron Mountain dividend history
About Iron Mountain
Today, we are a global leader in information management services, and we are trusted by more than 240,000 customers in 61 countries, including approximately 95% of the Fortune 1000, to help unlock value and intelligence from their assets through services that transcend the physical and digital worlds. Our broad range of solutions address their information management, digital transformation, information security, data center and asset lifecycle management (“ALM”) needs. Our longstanding commitment to safety, security, sustainability and innovation in support of our customers underpins everything we do. We currently serve customers across an array of market verticals — commercial, legal, financial, healthcare, technology, insurance, life sciences, energy, business services, entertainment and government organizations.
Iron Mountain's own description, from its annual report (Form 10-K, filed Feb 12, 2026), Item 1. Business. Read the filing on sec.gov
Iron Mountain is headquartered in Portsmouth, New Hampshire. It is registered with the SEC as IRON MOUNTAIN INC (CIK 1020569); its fiscal year ends in December and its shares trade on the NYSE. Iron Mountain is one of the artificial intelligence (AI) and semiconductor companies tracked on Silicon Floor, in the neoclouds & data centers segment, with live prices, SEC filings, financial statements, institutional ownership and dividends.
Latest reported quarter
In its quarter ended Sep 30, 2026 (filed Nov 5, 2026), Iron Mountain reported revenue of $2.0B, operating income of $410.6M and net income of $124.1M.
Latest SEC filings
- 8-K: Earnings released (2.02), Nov 5, 2026
- 8-K: Earnings released (2.02), Aug 5, 2026
- 8-K: Notes offering (2.03), Jun 26, 2026
- 8-K: Earnings released (2.02), Apr 30, 2026
More on Iron Mountain
- Who owns Iron Mountain
- Iron Mountain insider trading
- Iron Mountain relationships
- Iron Mountain dividend
- Iron Mountain financials
- Iron Mountain technicals and short interest
Filed figures, quarter by quarter
- Iron Mountain revenue by quarter, with the filing behind each
- Iron Mountain operating income by quarter, with the filing behind each
- Iron Mountain net income by quarter, with the filing behind each
