Iron Mountain (IRM)
What the price implies
A reverse DCF: instead of guessing a fair value, it asks what growth today's price already assumes. How it works.
Fundamental grade
Five factors scored 1 to 9 from IRM's latest numbers, weighted into one grade. It describes the business, not whether the stock is a buy.
Key numbers
Results from SEC filings
Fiscal years, from Iron Mountain's 10-K filings. The deep dive has 15+ years, quarters and every line.
| Fiscal year | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Revenue | $4.5B | $5.1B | $5.5B | $6.1B | $6.9B |
| Net income | $450M | $557M | $184M | $180M | $145M |
| Free cash flow | $148M | $52M | -$226M | -$595M | -$932M |
| EPS (diluted) | $1.55 | $1.90 | $0.63 | $0.61 | $0.49 |
| Operating margin | 19.0% | 20.6% | 16.8% | 16.4% | 16.9% |
Where the revenue comes from
Revenue by segments, fiscal 2025.
Superinvestors who own IRM
From each investor's latest 13F filing (what a 13F shows). 4 of the investors we track hold it.
| Investor | Last quarter | Value | % of portfolio | Quarter |
|---|---|---|---|---|
| Cliff Asness AQR Capital Management |
Added | $267M | 0.09% | Q2 2026 |
| Ron Baron Baron Capital (BAMCO) |
Trimmed | $39M | 0.06% | Q2 2026 |
| Joel Greenblatt Gotham Asset Management |
Added | $6M | 0.02% | Q2 2026 |
| Murray Stahl Horizon Kinetics LLC |
Trimmed | $2M | 0.03% | Q2 2026 |
Insider buying
Open-market purchases by Iron Mountain's executives and directors in the last 12 months, from SEC Form 4 filings. What insider buying tells you.
| Date | Insider | Shares | Price | Value |
|---|---|---|---|---|
| Jan 23, 2026 | Ro Khanna |
0 | $93.59 | — |
| Jan 23, 2026 | Ro Khanna |
0 | $93.59 | — |
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In the full deep dive
Questions
Are Iron Mountain insiders buying the stock?
2 open-market insider purchases of IRM in the last 12 months, from SEC Form 4 filings.
Which superinvestors own Iron Mountain?
4 of the superinvestors Investingly tracks hold IRM in their latest 13F, including Cliff Asness, Ron Baron, Joel Greenblatt.
Prices and ratios as of Oct 7, 2026; statements from SEC filings. Information only, not investment advice. Superinvestor holdings come from 13F filings, which are filed up to 45 days after each quarter ends.