Digital Realty (DLR) vs Iron Mountain (Delaware)Common Stock REIT (IRM)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 9, 2026.
Summary
Iron Mountain (Delaware)Common Stock REIT (IRM) has outperformed Digital Realty (DLR) over the past year, gaining 7.2% versus a gain of 1.1%. Over five years, IRM leads with a +151.7% price change compared with +22.3% for DLR. Digital Realty is the larger company by market cap ($66.50 billion vs $33.63 billion), about 2.0 times the size, while Iron Mountain (Delaware)Common Stock REIT is growing revenue faster (+12.2% vs +10.0%).
On valuation, Iron Mountain (Delaware)Common Stock REIT trades at a lower forward P/E (41.4x vs 63.7x for Digital Realty). Iron Mountain (Delaware)Common Stock REIT offers the higher dividend yield (2.99% vs 2.77%). Digital Realty converts more of its revenue into profit, with a net margin of 21.4% versus 2.2%.
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | DLR | IRM |
|---|---|---|
| Share price | $176.07 | $112.97 |
| Market cap | $66.50B | $33.63B |
| 1-day change | -2.44% | -2.40% |
| YTD return | +13.81% | +36.19% |
| 1-year return | +1.07% | +7.19% |
| 5-year return | +22.32% | +151.72% |
| P/E ratio (TTM) | 85.47 | 80.69 |
| Forward P/E | 63.75 | 41.43 |
| EPS (TTM) | $2.06 | $1.40 |
| Dividend yield | 2.77% | 2.99% |
| Annual dividend | $4.88 | $3.38 |
| Revenue (latest FY) | $6.11B | $6.90B |
| Revenue growth (YoY) | +10.04% | +12.23% |
| Net income (latest FY) | $1.31B | $152.25M |
| Gross margin | — | 55.38% |
| Operating margin | 10.77% | 16.86% |
| Net margin | 21.41% | 2.21% |
| 52-week high | $208.14 | $134.68 |
| 52-week low | $146.23 | $77.77 |
| Distance from 52-week high | -15.41% | -16.12% |
| Analyst consensus | strong_buy | buy |
| Avg. price target upside | +26.90% | +28.43% |
| Average volume | 2.27M | 1.73M |
| Shares outstanding | 371.00M | 297.70M |
| Employees | 4,282 | 29,400 |
| Sector | Real Estate | Real Estate |
| Industry | Real Estate Investment Trusts | Real Estate Investment Trusts |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- Digital Realty is more profitable, keeping 21.4 cents of every revenue dollar as net income versus 2.2 cents for Iron Mountain (Delaware)Common Stock REIT.
About Digital Realty
DLR stock →Digital Realty Trust, Inc. brings companies and data together by delivering the full spectrum of data center, colocation, and interconnection solutions.
Real Estate · Real Estate Investment Trusts · 4,282 employees
About Iron Mountain (Delaware)Common Stock REIT
IRM stock →Iron Mountain Incorporated is 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 needs.
Real Estate · Real Estate Investment Trusts · 29,400 employees
DLR vs IRM FAQ
Which is bigger, Digital Realty or Iron Mountain (Delaware)Common Stock REIT?
Digital Realty (DLR) is larger, with a market capitalization of $66.50B compared with $33.63B for Iron Mountain (Delaware)Common Stock REIT (IRM).
Which stock has performed better over the past year, DLR or IRM?
IRM returned +7.19% over the past 12 months, compared with +1.07% for DLR (price return, excluding dividends). Past performance does not predict future results.
Which has the lower P/E ratio, DLR or IRM?
IRM has the lower trailing P/E at 80.7, versus 85.5 for DLR. A lower P/E is not by itself a sign of a better investment; it can reflect slower expected growth or higher risk.
Which pays a higher dividend, Digital Realty or Iron Mountain (Delaware)Common Stock REIT?
Iron Mountain (Delaware)Common Stock REIT has the higher yield at 2.99%, compared with 2.77% for Digital Realty.
Are Digital Realty and Iron Mountain (Delaware)Common Stock REIT in the same industry?
Yes. Both are classified in the Real Estate Investment Trusts industry within the Real Estate sector.