RMR vs SPY: Correlation
How closely do The RMR Group Inc. (RMR) and SPDR S&P 500 ETF Trust (SPY) trade together? Their weekly returns over three years give a correlation of 0.37, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RMR and SPY?
Over the past 3 years, RMR and SPY moved with a correlation of 0.37, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.22 versus 0.37 over 3 years. Over 5 years the correlation is 0.44, and the annualized covariance of weekly returns is 146.1 %².
Among the 13 assets we track against RMR, SPY sits near the bottom by co-movement, at rank #9. The trailing year gives RMR the advantage: +29.4% versus +20.6%, a 8.8-point spread. One caveat on sizing: RMR is 1.9 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
RMR vs SPY: side by side
| RMR (The RMR Group Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +29.4% | +20.6% |
| 5-year return | -25.0% | +82.4% |
| Volatility (ann.) | 27.3% | 14.5% |
| Beta vs S&P 500 | 0.70 | 1.00 |
| Max drawdown (3Y) | -45.0% | -18.8% |
| Market cap | $0.3B | – |
| P/E (trailing) | 16.9 | – |
| Dividend yield | 9.23% | 1.01% |
| Expense ratio | – | 0.09% |
| Assets under management | – | $795.3B |
| Sector / category | US Listed | ETF · US Large Cap |
SPY is a Large Blend fund from State Street Investment Management: $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | RMR | SPY |
|---|---|---|
| 2022 | -13.9% | -18.2% |
| 2023 | +6.5% | +26.2% |
| 2024 | -21.5% | +24.9% |
| 2025 | -19.4% | +17.7% |
| 2026 | +41.2% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RMR and SPY good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.37 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between RMR and SPY?
The RMR/SPY correlation stands at 0.37 on a 3-year window (1 year: 0.22, 5 years: 0.44), computed from weekly returns as of 2026-08-27.
Is SPY a good diversifier for RMR?
Yes, to a useful degree: a correlation of 0.37 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.37 mean?
A reading of 0.37 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/rmr-vs-spy.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/rmr-vs-spy/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: RMR correlations · SPY correlations
