CUBE vs PDEX: Correlation
How closely do CubeSmart (CUBE) and Pro-Dex, Inc. (PDEX) trade together? Their weekly returns over three years give a correlation of -0.21, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CUBE and PDEX?
Across a 3-year window, the weekly returns of CUBE and PDEX correlate at -0.21, negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.23) sits close to the 3-year figure. Stretching to 5 years gives -0.10, with an annualized covariance of -287.6 %².
Out of 24 assets tracked against CUBE, PDEX lands near the bottom at #22. The last year tells two different stories: PDEX led by 38.7 percentage points, +3.8% for CUBE against +42.5% for PDEX. One caveat on sizing: PDEX is 2.6 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.
CUBE vs PDEX: side by side
| CUBE (CubeSmart) | PDEX (Pro-Dex, Inc.) | |
|---|---|---|
| 1-year return | +3.8% | +42.5% |
| 5-year return | -6.2% | +152.4% |
| Volatility (ann.) | 23.0% | 59.6% |
| Beta vs S&P 500 | 0.63 | 0.17 |
| Max drawdown (3Y) | -32.0% | -65.3% |
| Market cap | $9.0B | $0.2B |
| P/E (trailing) | 27.6 | 17.5 |
| Dividend yield | 5.22% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CUBE | PDEX |
|---|---|---|
| 2022 | -26.3% | -31.5% |
| 2023 | +20.5% | +10.2% |
| 2024 | -4.5% | +166.8% |
| 2025 | -11.6% | -17.7% |
| 2026 | +15.7% | +68.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CUBE and PDEX good diversifiers for each other?
By historical standards, yes. A correlation of -0.21 means the two rarely move for the same reasons.
FAQ
What is the correlation between CUBE and PDEX?
Using weekly returns as of 2026-08-27: -0.21 over 3 years, with -0.23 over the last year and -0.10 over 5 years.
Is PDEX a good diversifier for CUBE?
By historical standards, yes. A correlation of -0.21 means the two rarely move for the same reasons.
What does a correlation of -0.21 mean?
A reading of -0.21 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/cube-vs-pdex.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/cube-vs-pdex/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CUBE correlations · PDEX correlations
