Seek Returns

IRM vs. O: Iron Mountain vs. Realty Income Stock Comparison

How do Iron Mountain (IRM) and Realty Income (O) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.

Company Profile

Iron Mountain (IRM) and Realty Income (O) both fall under the Equity Real Estate Investment Trusts (REITs) industry group, but IRM is classified in Specialized REITs while O is classified in Retail REITs.

Both Iron Mountain (IRM) and Realty Income (O) are REITs — read their payout ratios and P/E alongside FFO (funds from operations) rather than at face value.

Company profile comparison for Iron Mountain (IRM) and Realty Income (O)
Profile ItemIRMO
NameIron Mountain Inc.Realty Income Corp.
Country/RegionUnited StatesUnited States
GICS SectorReal EstateReal Estate
GICS Industry GroupEquity Real Estate Investment Trusts (REITs)Equity Real Estate Investment Trusts (REITs)
GICS IndustrySpecialized REITsRetail REITs
GICS Sub-IndustryOther Specialized REITsRetail REITs
Market Capitalization31.73 billion USD56.31 billion USD
CurrencyUSDUSD
ExchangeNYSENYSE
Listing DateFebruary 1, 1996October 18, 1994
Security TypeREITREIT

Price Performance

Cumulative Growth

IRM
O
GSPC
Loading price history…
Iron Mountain (IRM) vs. Realty Income (O), with S&P 500 (GSPC) for reference: Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

Loading price history…
Trailing total returns for Iron Mountain (IRM) and Realty Income (O). Returns over one year are annualized.

Calendar-Year Returns

Loading price history…
Calendar-year total returns for Iron Mountain (IRM) and Realty Income (O). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for Iron Mountain (IRM) and Realty Income (O)
MetricIRMO
Total Return (1Y)12.13%10.34%
Total Return (3Y, Annualized)28.29%11.84%
Total Return (5Y, Annualized)23.46%2.34%

Risk Profile

Drawdown History

IRM
O
GSPC
Loading price history…
Iron Mountain (IRM) vs. Realty Income (O), with S&P 500 (GSPC) for reference: Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

Loading price history…
Distribution of monthly total returns for Iron Mountain (IRM) and Realty Income (O). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for Iron Mountain (IRM) and Realty Income (O)
MetricIRMO
Volatility (1Y, Annualized)35.33%16.95%
Beta (5Y)1.190.63
Max Drawdown (5Y)-39.03%-34.47%
Avg. Volume (3M)1.52M7.39M

Risk-Adjusted Performance

Risk-Return Positioning

Loading chart…
IRM and O are plotted by 1-year volatility (risk) and 1-year return. The dashed Capital Allocation Line runs from the risk-free rate through the shared industry median.

Risk-Adjusted Metrics

Risk-adjusted metrics for Iron Mountain (IRM) and Realty Income (O)
MetricIRMO
Sharpe Ratio (1Y)0.220.36
Sortino Ratio (1Y)0.310.52

Profitability

ROE (TTM)

Capital efficiency shows on one side only: Realty Income (O) earns 3.48% on shareholders’ equity, ranked against its industry; Iron Mountain (IRM) has no ROE this period.

IRM

Equity Real Estate Investment Trusts (REITs) industry group

--

Max
22.74%
Q3
10.54%
Median
6.38%
Q1
1.69%
Min
-10.86%
IRM
--

O

Equity Real Estate Investment Trusts (REITs) industry group

3.48%

Max
22.74%
Q3
10.54%
Median
6.38%
O
3.48%
Q1
1.69%
Min
-10.86%
Loading chart…
Iron Mountain (IRM) vs. Realty Income (O): IRM does not report ROE, so it has no value marker; O is benchmarked against the Equity Real Estate Investment Trusts (REITs) industry group.

Net Margin (TTM)

Neither Iron Mountain (IRM) in Equity Real Estate Investment Trusts (REITs) nor Realty Income (O) in Equity Real Estate Investment Trusts (REITs) is well served by net margin: heavy depreciation makes net income a poor profitability proxy in their businesses, where FFO-based measures are the standard read.

Operating Margin (TTM)

Neither side reports a meaningful operating margin: for Iron Mountain (IRM) in Equity Real Estate Investment Trusts (REITs) and Realty Income (O) in Equity Real Estate Investment Trusts (REITs), funding costs are part of the core business, so net margin and ROE are the cleaner profitability reads.

Profitability Metrics

Profitability metrics for Iron Mountain (IRM) and Realty Income (O)
MetricIRMO
ROE (TTM)--3.48%
ROA (TTM)4.72%2.44%
Net Margin (TTM)----
Operating Margin (TTM)----
Gross Margin (TTM)----

Growth

Revenue Growth

Iron Mountain (IRM) at 12.23% sits in the top revenue growth quartile, while Realty Income (O) at 9.07% is closer to the peer norm — faster top-line expansion for IRM.

Loading chart…
Iron Mountain (IRM) vs. Realty Income (O): A comparison of their Revenue Growth across different time periods.

EPS Growth

EPS growth isn't a meaningful figure for either Iron Mountain (IRM) in Equity Real Estate Investment Trusts (REITs) or Realty Income (O) in Equity Real Estate Investment Trusts (REITs) under our convention.

Growth Metrics

Growth metrics for Iron Mountain (IRM) and Realty Income (O)
MetricIRMO
Revenue Growth (YoY)12.23%9.07%
Revenue Growth (3Y CAGR)10.58%19.80%
EPS Growth (YoY)----
EPS Growth (3Y CAGR)----

Financial Strength

Current Ratio (MRQ)

Realty Income (O) at 2.17 carries current ratio above its industry’s typical mid-range, while Iron Mountain (IRM) at 0.56 runs in the tighter-liquidity quartile — different working-capital profiles, both worth examining.

IRM

Equity Real Estate Investment Trusts (REITs) industry group

0.56

Max
4.19
Q3
2.11
Median
1.31
Q1
0.62
IRM
0.56
Min
0.06

O

Equity Real Estate Investment Trusts (REITs) industry group

2.17

Max
4.19
O
2.17
Q3
2.11
Median
1.31
Q1
0.62
Min
0.06
Loading chart…
Iron Mountain (IRM) vs. Realty Income (O): A comparison of their current ratio against the Equity Real Estate Investment Trusts (REITs) industry group benchmark.

Debt / Equity (MRQ)

Only one side’s leverage can be read here: Realty Income (O) carries debt-to-equity ratio of 0.75 against its industry range, while Iron Mountain (IRM) reports no figure this period.

IRM

Equity Real Estate Investment Trusts (REITs) industry group

--

Max
2.72
Q3
1.59
Median
0.99
Q1
0.72
Min
0.20
IRM
--

O

Equity Real Estate Investment Trusts (REITs) industry group

0.75

Max
2.72
Q3
1.59
Median
0.99
O
0.75
Q1
0.72
Min
0.20
Loading chart…
Iron Mountain (IRM) vs. Realty Income (O): IRM does not report debt-to-equity ratio, so it has no value marker; O is benchmarked against the Equity Real Estate Investment Trusts (REITs) industry group.

Financial Strength Metrics

Financial strength metrics for Iron Mountain (IRM) and Realty Income (O)
MetricIRMO
Current Ratio (MRQ)0.562.17
Debt / Equity (MRQ)--0.75
Net Debt / EBITDA7.695.77

Dividends

Dividend Yield (TTM)

Both Iron Mountain (IRM) at 3.28% and Realty Income (O) at 5.45% pay solid, industry-typical yields, sitting squarely within their peers’ usual range.

IRM

Equity Real Estate Investment Trusts (REITs) industry group

3.28%

Max
8.62%
Q3
5.95%
Median
4.34%
IRM
3.28%
Q1
3.26%
Min
0.00%

O

Equity Real Estate Investment Trusts (REITs) industry group

5.45%

Max
8.62%
Q3
5.95%
O
5.45%
Median
4.34%
Q1
3.26%
Min
0.00%
Loading chart…
Iron Mountain (IRM) vs. Realty Income (O): A comparison of their dividend yield against the Equity Real Estate Investment Trusts (REITs) industry group benchmark.

Dividend Payout Ratio (TTM)

An earnings-based payout ratio fits neither Iron Mountain (IRM) in Equity Real Estate Investment Trusts (REITs) nor Realty Income (O) in Equity Real Estate Investment Trusts (REITs): their distributions are mandated and conventionally measured against FFO, so the accounting-earnings ratio overstates both.

Dividend Metrics

Dividend metrics for Iron Mountain (IRM) and Realty Income (O)
MetricIRMO
Dividend Yield (TTM)3.28%5.45%
Dividend Payout Ratio (TTM)----

Valuation

P/E Ratio (TTM)

P/E ratio is not a meaningful valuation yardstick for either Iron Mountain (IRM) in Equity Real Estate Investment Trusts (REITs) or Realty Income (O) in Equity Real Estate Investment Trusts (REITs): depreciation suppresses reported earnings in their businesses, and price-to-FFO is the conventional yardstick instead.

P/S Ratio (TTM)

Iron Mountain (IRM) at 4.07 is priced about in line with its industry on P/S ratio, while Realty Income (O) at 9.06 sits in the pricier quartile — O costs more per dollar of sales.

IRM

Equity Real Estate Investment Trusts (REITs) industry group

4.07

Max
14.47
Q3
8.02
Median
5.98
IRM
4.07
Q1
3.27
Min
0.43

O

Equity Real Estate Investment Trusts (REITs) industry group

9.06

Max
14.47
O
9.06
Q3
8.02
Median
5.98
Q1
3.27
Min
0.43
Loading chart…
Iron Mountain (IRM) vs. Realty Income (O): A comparison of their P/S ratio against the Equity Real Estate Investment Trusts (REITs) industry group benchmark.

P/B Ratio (MRQ)

Iron Mountain (IRM) reports a negative P/B ratio of -22.85, meaning negative book equity — the multiple itself is not meaningful for valuation. Meanwhile Realty Income (O) reports 1.42, ranking against industry peers normally.

IRM

Equity Real Estate Investment Trusts (REITs) industry group

-22.85

Max
4.06
Q3
2.53
Median
1.64
Q1
1.06
Min
0.21
IRM
-22.85

O

Equity Real Estate Investment Trusts (REITs) industry group

1.42

Max
4.06
Q3
2.53
Median
1.64
O
1.42
Q1
1.06
Min
0.21
Loading chart…
Iron Mountain (IRM) vs. Realty Income (O): A comparison of their P/B ratio against the Equity Real Estate Investment Trusts (REITs) industry group benchmark.

Valuation Metrics

Valuation metrics for Iron Mountain (IRM) and Realty Income (O)
MetricIRMO
P/E Ratio (TTM)----
P/S Ratio (TTM)4.079.06
P/B Ratio (MRQ)-22.851.42
Free Cash Flow Yield (TTM)----