IRM vs. DLR
IRM (Iron Mountain Incorporated) and DLR (Digital Realty Trust, Inc.) are both stocks. Both operate in the REIT - Specialty industry within the Real Estate sector. Over the past 10 years, IRM returned 19.08%/yr vs 9.89%/yr for DLR. At a 0.43 correlation, their price movements are largely independent.
Performance
IRM vs. DLR - Performance Comparison
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Returns By Period
In the year-to-date period, IRM achieves a 54.64% return, which is significantly higher than DLR's 19.87% return. Over the past 10 years, IRM has outperformed DLR with an annualized return of 19.08%, while DLR has yielded a comparatively lower 9.89% annualized return.
IRM
- 1D
- 1.65%
- 1M
- 0.89%
- YTD
- 54.64%
- 6M
- 55.51%
- 1Y
- 28.47%
- 3Y*
- 35.74%
- 5Y*
- 27.45%
- 10Y*
- 19.08%
DLR
- 1D
- 0.74%
- 1M
- -4.71%
- YTD
- 19.87%
- 6M
- 21.68%
- 1Y
- 7.39%
- 3Y*
- 24.63%
- 5Y*
- 6.15%
- 10Y*
- 9.89%
IRM vs. DLR - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IRM Iron Mountain Incorporated | 54.64% | -18.24% | 54.48% | 46.52% | -0.08% | 87.74% | 0.98% | 5.87% | -7.97% | 23.56% |
DLR Digital Realty Trust, Inc. | 19.87% | -10.07% | 35.90% | 39.95% | -41.00% | 30.66% | 20.37% | 16.52% | -3.00% | 19.80% |
Correlation
The correlation between IRM and DLR is 0.68, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.68 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.61 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.61 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.53 |
Correlation (All Time) Calculated using the full available price history since Oct 29, 2004 | 0.43 |
Over the past year, IRM and DLR have become more correlated (0.68) than their long-term average of 0.43, meaning their price movements have been converging.
Fundamentals
IRM:
$0.91
DLR:
$4.53
IRM:
139.08
DLR:
40.63
IRM:
5.23
DLR:
9.48
IRM:
$7.25B
DLR:
$5.09B
IRM:
$2.94B
DLR:
$1.67B
IRM:
$2.40B
DLR:
$3.18B
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Return for Risk
IRM vs. DLR — Risk / Return Rank
IRM
DLR
IRM vs. DLR - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Iron Mountain Incorporated (IRM) and Digital Realty Trust, Inc. (DLR). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| IRM | DLR | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.57 | ||
| Sortino ratioReturn per unit of downside risk | +0.78 | ||
| Omega ratioGain probability vs. loss probability | 1.18 | 1.07 | +0.10 |
| Calmar ratioReturn relative to maximum drawdown | 1.14 | 0.44 | +0.70 |
| Martin ratioReturn relative to average drawdown | 2.73 | 1.09 | +1.64 |
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Drawdowns
IRM vs. DLR - Drawdown Comparison
The maximum IRM drawdown since its inception was -55.71%, roughly equal to the maximum DLR drawdown of -56.80%. Use the drawdown chart below to compare losses from any high point for IRM and DLR.
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Drawdown Indicators
| IRM | DLR | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.71% | -56.80% | +1.09% |
Max Drawdown (1Y)Largest decline over 1 year | -25.15% | -16.83% | -8.32% |
Max Drawdown (3Y)Largest decline over 3 years | -39.03% | -29.40% | -9.63% |
Max Drawdown (5Y)Largest decline over 5 years | -39.03% | -48.52% | +9.49% |
Max Drawdown (10Y)Largest decline over 10 years | -39.03% | -48.52% | +9.49% |
Current DrawdownCurrent decline from peak | -3.65% | -9.67% | +6.02% |
Average DrawdownAverage peak-to-trough decline | -13.16% | -11.13% | -2.03% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 10.47% | 6.82% | +3.65% |
Volatility
IRM vs. DLR - Volatility Comparison
Iron Mountain Incorporated (IRM) and Digital Realty Trust, Inc. (DLR) have volatilities of 7.91% and 7.62%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IRM | DLR | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 7.91% | 7.62% | +0.29% |
Volatility (6M)Calculated over the trailing 6-month period | 24.13% | 16.30% | +7.83% |
Volatility (1Y)Calculated over the trailing 1-year period | 32.04% | 22.76% | +9.28% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 29.68% | 28.58% | +1.10% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 29.64% | 28.19% | +1.45% |
Dividends
IRM vs. DLR - Dividend Comparison
IRM's dividend yield for the trailing twelve months is around 2.59%, less than DLR's 2.65% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
DLR Digital Realty Trust, Inc. | 2.65% | 3.15% | 2.75% | 3.63% | 4.87% | 2.62% | 3.21% | 3.61% | 3.79% | 3.27% | 3.58% | 4.50% |
IRM Iron Mountain Incorporated | 2.59% | 3.88% | 2.60% | 3.63% | 4.96% | 4.73% | 8.39% | 7.69% | 7.32% | 5.93% | 6.17% | 7.07% |
Financials
IRM vs. DLR - Financials Comparison
This section allows you to compare key financial metrics between Iron Mountain Incorporated and Digital Realty Trust, Inc.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
IRM vs. DLR - Profitability Comparison
IRM - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Iron Mountain Incorporated reported a gross profit of 0.00 and revenue of 1.94B. Therefore, the gross margin over that period was 0.0%.
DLR - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Digital Realty Trust, Inc. reported a gross profit of 0.00 and revenue of 303.36M. Therefore, the gross margin over that period was 0.0%.
IRM - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Iron Mountain Incorporated reported an operating income of 395.23M and revenue of 1.94B, resulting in an operating margin of 20.4%.
DLR - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Digital Realty Trust, Inc. reported an operating income of 195.64M and revenue of 303.36M, resulting in an operating margin of 64.5%.
IRM - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Iron Mountain Incorporated reported a net income of 143.67M and revenue of 1.94B, resulting in a net margin of 7.4%.
DLR - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Digital Realty Trust, Inc. reported a net income of -12.46M and revenue of 303.36M, resulting in a net margin of -4.1%.
Frequently Asked Questions
IRM and DLR have a correlation of 0.68, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IRM has higher volatility (7.91%) compared to DLR (7.62%). In terms of maximum drawdown, IRM dropped -55.71% vs DLR's -56.80%.
IRM currently has the higher Sharpe Ratio (0.89 vs 0.33), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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