Iron Mountain Inc vs Simon Property Group Inc — how do they compare? Iron Mountain Inc trades at $124.49 (market cap $36.44B), while Simon Property Group Inc trades at $220.58 (market cap $71.03B). The key difference: Simon Property Group Inc is the larger of the two by market cap, and Simon Property Group Inc pays the higher dividend (4.05%). Which is the better fit depends on your goals.
| IRM | SPG | |
|---|---|---|
Market Cap | $36.44B | $71.03B |
Sector | Real Estate | Real Estate |
52-Week High | $133.06 | $236.70 |
52-Week Low | $78.86 | $169.22 |
Enterprise Value | $55.85B | $99.48B |
Dividend Yield | 2.82% | 4.05% |
Signals from Pluang's Aura AI — not financial advice
Iron Mountain (IRM) trades at $124.67, up 2.56% today, with a bearish technical signal but strong recent earnings beats. Revenue grew to $6.90B in 2025, though net margins compressed to 2.09%. The stock is supported by a 65% analyst buy rating and a $141.50 consensus target, with institutional interest highlighted by recent purchases. Key risks include high debt levels, with a debt-to-asset ratio of 79.04% in 2025.
Outlook remains mixed; robust data center growth and dividend yield near 2.8% offer upside, but elevated valuation (P/E 86.8) and persistent negative shareholder equity warrant caution. Earnings momentum from Q2 2026 beat provides near-term support, yet debt servicing and competitive pressures pose headwinds for sustained gains.
Simon Property Group (SPG) trades at $220.37, down 0.08% on the day, with a bearish technical signal but strong fundamentals. Recent Q2 2026 earnings showed an EPS miss ($1.49 actual vs. $1.64 expected), though FFO beat estimates and full-year guidance was raised. The company maintains robust profitability with a net income margin of 66.57% and pays consistent dividends.
Outlook is mixed: solid operational performance and raised guidance support upside near the $226.58 consensus price target, but high debt ($24.21B) and economic sensitivity pose risks. Analyst sentiment leans neutral with 54.05% hold ratings, reflecting cautious optimism amid macroeconomic uncertainties.
Trailing returns across standard periods
Latest headlines on both assets
Iron Mountain Inc is a record management services provider. The firm is organized as a REIT. Most of its revenue comes from its storage business, with the rest coming from value-added services. The firm primarily caters to enterprise clients in developed markets. Its business segments include Global RIM Business
Read more on IRM →Simon Property Group is the second- largest real estate investment trust in the United States. Its portfolio includes an interest in 207 properties: 119 traditional malls, 69 premium outlets, 14 Mills centers (a combination of a traditional mall, outlet center, and big-box retailers), six lifestyle centers, and five other retail properties. Simon's portfolio averaged $693 in sales per square foot over the 12 months prior to the pandemic. The company also owns a 21% interest in Klepierre, a European retail company with investments in shopping centers in 16 countries, and joint venture interests in 33 premium outlets across 11 countries.
Read more on SPG →