PDEX vs VNQ: Correlation
Measured on weekly returns over the past three years, Pro-Dex, Inc. (PDEX) and Vanguard Real Estate ETF (VNQ) carry a correlation of -0.18, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PDEX and VNQ?
Across a 3-year window, the weekly returns of PDEX and VNQ correlate at -0.18, negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.18) sits close to the 3-year figure. Stretching to 5 years gives -0.08, with an annualized covariance of -173.9 %².
Within PDEX's tracked universe of 31 assets, VNQ comes in at #15 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months PDEX outperformed by 32.2 percentage points (+42.5% for PDEX against +10.3% for VNQ). One caveat on sizing: PDEX is 3.6 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.
PDEX vs VNQ: side by side
| PDEX (Pro-Dex, Inc.) | VNQ (Vanguard Real Estate ETF) | |
|---|---|---|
| 1-year return | +42.5% | +10.3% |
| 5-year return | +152.4% | +9.5% |
| Volatility (ann.) | 59.6% | 16.6% |
| Beta vs S&P 500 | 0.17 | 0.59 |
| Max drawdown (3Y) | -65.3% | -17.5% |
| Market cap | $0.2B | – |
| P/E (trailing) | 17.5 | – |
| Dividend yield | 0.00% | 3.51% |
| Expense ratio | – | 0.13% |
| Assets under management | – | $73.1B |
| Sector / category | US Listed | ETF · Real Estate |
VNQ is a Real Estate fund from Vanguard: $73.1B under management, 140 holdings, a 0.13% expense ratio, a 3.51% trailing dividend yield.
Year-by-year returns
| Year | PDEX | VNQ |
|---|---|---|
| 2022 | -31.5% | -26.3% |
| 2023 | +10.2% | +11.9% |
| 2024 | +166.8% | +4.8% |
| 2025 | -17.7% | +3.2% |
| 2026 | +68.6% | +12.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PDEX and VNQ good diversifiers for each other?
Yes. With a correlation of -0.18, PDEX and VNQ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between PDEX and VNQ?
Using weekly returns as of 2026-08-27: -0.18 over 3 years, with -0.18 over the last year and -0.08 over 5 years.
Is VNQ a good diversifier for PDEX?
Yes. With a correlation of -0.18, PDEX and VNQ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.18 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/pdex-vs-vnq.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/pdex-vs-vnq/)
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Related comparisons
Hubs: PDEX correlations · VNQ correlations
