PDEX vs VMRK: Correlation
Measured on weekly returns over the past three years, Pro-Dex, Inc. (PDEX) and Vivmark Residential (VMRK) carry a correlation of -0.21, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PDEX and VMRK?
Across a 3-year window, the weekly returns of PDEX and VMRK correlate at -0.21, negative, meaning they tend to move in opposite directions. Little has changed lately, as the 1-year reading of -0.20 lands near the 3-year figure. Stretching to 5 years gives -0.13, with an annualized covariance of -246.1 %².
By 3-year correlation, VMRK places #21 of the 31 assets tracked against PDEX. The last year tells two different stories: PDEX led by 37.4 percentage points, +42.5% for PDEX against +5.1% for VMRK. One caveat on sizing: PDEX is 3.0 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.
PDEX vs VMRK: side by side
| PDEX (Pro-Dex, Inc.) | VMRK (Vivmark Residential) | |
|---|---|---|
| 1-year return | +42.5% | +5.1% |
| 5-year return | +152.4% | -5.5% |
| Volatility (ann.) | 59.6% | 19.7% |
| Beta vs S&P 500 | 0.17 | 0.57 |
| Max drawdown (3Y) | -65.3% | -21.2% |
| Market cap | $0.2B | $26.1B |
| P/E (trailing) | 17.5 | 25.7 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | Real Estate |
Year-by-year returns
| Year | PDEX | VMRK |
|---|---|---|
| 2022 | -31.5% | -32.5% |
| 2023 | +10.2% | +8.3% |
| 2024 | +166.8% | +20.8% |
| 2025 | -17.7% | -8.6% |
| 2026 | +68.6% | +7.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PDEX and VMRK good diversifiers for each other?
Yes: at -0.21, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between PDEX and VMRK?
Using weekly returns as of 2026-08-27: -0.21 over 3 years, with -0.20 over the last year and -0.13 over 5 years.
Is VMRK a good diversifier for PDEX?
Yes: at -0.21, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.21 mean?
On the −1 to +1 scale, -0.21 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/pdex-vs-vmrk.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/pdex-vs-vmrk/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: PDEX correlations · VMRK correlations
