EXR vs TRT: Correlation
Measured on weekly returns over the past three years, Extra Space Storage (EXR) and Trio-Tech International (TRT) carry a correlation of -0.15, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EXR and TRT?
On 3 years of weekly data the EXR/TRT correlation comes out at -0.15, negative, meaning they tend to move in opposite directions. Little has changed lately, as the 1-year reading of -0.21 lands near the 3-year figure. The 5-year figure is -0.03, and annualized covariance runs at -427.5 %².
Among the 33 assets we track against EXR, TRT ranks #25 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months TRT outperformed by 289.9 percentage points (+5.6% for EXR against +295.5% for TRT). Note the risk asymmetry: TRT runs 4.1 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
EXR vs TRT: side by side
| EXR (Extra Space Storage) | TRT (Trio-Tech International) | |
|---|---|---|
| 1-year return | +5.6% | +295.5% |
| 5-year return | -6.1% | +365.8% |
| Volatility (ann.) | 26.0% | 107.4% |
| Beta vs S&P 500 | 0.68 | 0.18 |
| Max drawdown (3Y) | -29.4% | -54.6% |
| Market cap | $31.5B | – |
| P/E (trailing) | 31.6 | 209.6 |
| Dividend yield | 4.50% | 0.00% |
| Sector / category | Real Estate | US Listed |
Year-by-year returns
| Year | EXR | TRT |
|---|---|---|
| 2022 | -32.8% | -66.5% |
| 2023 | +13.9% | +12.7% |
| 2024 | -2.8% | +14.6% |
| 2025 | -8.9% | +127.9% |
| 2026 | +12.1% | +58.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EXR and TRT good diversifiers for each other?
Yes. With a correlation of -0.15, EXR and TRT have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between EXR and TRT?
Using weekly returns as of 2026-08-27: -0.15 over 3 years, with -0.21 over the last year and -0.03 over 5 years.
Is TRT a good diversifier for EXR?
Yes. With a correlation of -0.15, EXR and TRT have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.15 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
$ curl https://www.pairbook.io/api/v1/pairs/exr-vs-trt.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/exr-vs-trt/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: EXR correlations · TRT correlations
