PDM vs RMR: Correlation
Piedmont Realty Trust, Inc. (PDM) and The RMR Group Inc. (RMR) show a moderate relationship: their 3-year correlation of weekly returns is 0.58.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PDM and RMR?
Over the past 3 years, PDM and RMR moved with a correlation of 0.58, which is moderate. The relationship has been stable: the 1-year correlation (0.50) sits close to the 3-year figure. Over 5 years the correlation is 0.58, and the annualized covariance of weekly returns is 563.1 %².
Among the 28 assets we track against PDM, RMR ranks #17 by 3-year correlation. On 12-month performance RMR holds a 13.4-point edge, +16.0% against +29.4%.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
PDM vs RMR: side by side
| PDM (Piedmont Realty Trust, Inc.) | RMR (The RMR Group Inc.) | |
|---|---|---|
| 1-year return | +16.0% | +29.4% |
| 5-year return | -29.9% | -25.0% |
| Volatility (ann.) | 35.3% | 27.3% |
| Beta vs S&P 500 | 0.95 | 0.70 |
| Max drawdown (3Y) | -46.4% | -45.0% |
| Market cap | $1.2B | $0.3B |
| P/E (trailing) | – | 16.9 |
| Dividend yield | 0.00% | 9.23% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | PDM | RMR |
|---|---|---|
| 2022 | -46.8% | -13.9% |
| 2023 | -14.8% | +6.5% |
| 2024 | +37.2% | -21.5% |
| 2025 | -7.3% | -19.4% |
| 2026 | +16.4% | +41.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PDM and RMR good diversifiers for each other?
Only partially. A correlation of 0.58 means PDM and RMR share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between PDM and RMR?
Using weekly returns as of 2026-08-27: 0.58 over 3 years, with 0.50 over the last year and 0.58 over 5 years.
Is RMR a good diversifier for PDM?
Only partially. A correlation of 0.58 means PDM and RMR share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.58 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
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Related comparisons
Hubs: PDM correlations · RMR correlations
