Iron Mountain (Delaware)Common Stock REIT (IRM) vs Public Storage (PSA)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.
Summary
Iron Mountain (Delaware)Common Stock REIT (IRM) has outperformed Public Storage (PSA) over the past year, gaining 9.3% versus a loss of 3.9%. Over five years, IRM leads with a +157.9% price change compared with -11.7% for PSA. Public Storage is the larger company by market cap ($52.69 billion vs $34.46 billion), about 1.5 times the size, while Iron Mountain (Delaware)Common Stock REIT is growing revenue faster (+12.2% vs +2.7%).
On valuation, Public Storage trades at a lower forward P/E (28.6x vs 42.4x for Iron Mountain (Delaware)Common Stock REIT). Public Storage offers the higher dividend yield (4.26% vs 2.92%). Public Storage converts more of its revenue into profit, with a net margin of 37.0% 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 | IRM | PSA |
|---|---|---|
| Share price | $115.75 | $281.99 |
| Market cap | $34.46B | $52.69B |
| 1-day change | -0.64% | -1.35% |
| YTD return | +39.54% | +8.67% |
| 1-year return | +9.31% | -3.93% |
| 5-year return | +157.91% | -11.72% |
| P/E ratio (TTM) | 82.68 | 26.93 |
| Forward P/E | 42.45 | 28.62 |
| EPS (TTM) | $1.40 | $10.47 |
| Dividend yield | 2.92% | 4.26% |
| Annual dividend | $3.38 | $12.00 |
| Revenue (latest FY) | $6.90B | $4.82B |
| Revenue growth (YoY) | +12.23% | +2.74% |
| Net income (latest FY) | $152.25M | $1.78B |
| Gross margin | 55.38% | — |
| Operating margin | 16.86% | — |
| Net margin | 2.21% | 36.99% |
| 52-week high | $134.68 | $335.55 |
| 52-week low | $77.77 | $256.54 |
| Distance from 52-week high | -14.06% | -15.96% |
| Analyst consensus | buy | buy |
| Avg. price target upside | +25.35% | +18.82% |
| Average volume | 1.73M | 980.78K |
| Shares outstanding | 297.70M | 186.85M |
| Employees | 29,400 | 5,770 |
| 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
- IRM has outperformed PSA by 13.2 percentage points over the past year.
- Iron Mountain (Delaware)Common Stock REIT trades at a higher earnings multiple (82.7x vs 26.9x trailing P/E).
- Public Storage offers a meaningfully higher dividend yield (4.26% vs 2.92%).
- Public Storage is more profitable, keeping 37.0 cents of every revenue dollar as net income versus 2.2 cents for Iron Mountain (Delaware)Common Stock REIT.
- Iron Mountain (Delaware)Common Stock REIT grew revenue faster in its latest fiscal year (+12.23% vs +2.74%).
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
About Public Storage
PSA stock →Public Storage, a member of the S&P 500, is a REIT that primarily acquires, develops, owns, and operates self-storage facilities. At June 30, 2026, The firm: (i) owned and/or operated 3,584 self-storage facilities located in 40 states with approximately 259 million net rentable square feet in the United States and (ii) owned a 35% common equity interest in Shurgard Self Storage Limited (Euronext Brussels: SHUR), which owned 335 self-storage facilities located in seven Western European countries with approximately 19 million net rentable square feet operated under the Shurgard brand.
Real Estate · Real Estate Investment Trusts · 5,770 employees
IRM vs PSA FAQ
Which is bigger, Iron Mountain (Delaware)Common Stock REIT or Public Storage?
Public Storage (PSA) is larger, with a market capitalization of $52.69B compared with $34.46B for Iron Mountain (Delaware)Common Stock REIT (IRM).
Which stock has performed better over the past year, IRM or PSA?
IRM returned +9.31% over the past 12 months, compared with -3.93% for PSA (price return, excluding dividends). Past performance does not predict future results.
Which has the lower P/E ratio, IRM or PSA?
PSA has the lower trailing P/E at 26.9, versus 82.7 for IRM. 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, Iron Mountain (Delaware)Common Stock REIT or Public Storage?
Public Storage has the higher yield at 4.26%, compared with 2.92% for Iron Mountain (Delaware)Common Stock REIT.
Are Iron Mountain (Delaware)Common Stock REIT and Public Storage in the same industry?
Yes. Both are classified in the Real Estate Investment Trusts industry within the Real Estate sector.