APTV vs PDEX: Correlation
Measured on weekly returns over the past three years, Aptiv (APTV) and Pro-Dex, Inc. (PDEX) carry a correlation of -0.27, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are APTV and PDEX?
On 3 years of weekly data the APTV/PDEX correlation comes out at -0.27, negative, meaning they tend to move in opposite directions. The past 12 months show a tighter link (-0.12) than the 3-year average (-0.27). The 5-year figure is -0.16, and annualized covariance runs at -598.6 %².
PDEX is close to the least connected end of APTV's tracked universe, ranking #31 of 33. Correlation aside, the last 12 months split them widely, with PDEX ahead by 85.7 points (-43.2% versus +42.5%). One caveat on sizing: PDEX is 1.6 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.
APTV vs PDEX: side by side
| APTV (Aptiv) | PDEX (Pro-Dex, Inc.) | |
|---|---|---|
| 1-year return | -43.2% | +42.5% |
| 5-year return | -70.3% | +152.4% |
| Volatility (ann.) | 37.7% | 59.6% |
| Beta vs S&P 500 | 0.76 | 0.17 |
| Max drawdown (3Y) | -56.5% | -65.3% |
| Market cap | $9.4B | $0.2B |
| P/E (trailing) | 20.9 | 17.5 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Consumer Discretionary | US Listed |
Year-by-year returns
| Year | APTV | PDEX |
|---|---|---|
| 2022 | -43.5% | -31.5% |
| 2023 | -3.7% | +10.2% |
| 2024 | -32.6% | +166.8% |
| 2025 | +25.8% | -17.7% |
| 2026 | -40.3% | +68.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are APTV and PDEX good diversifiers for each other?
Yes. With a correlation of -0.27, APTV and PDEX have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between APTV and PDEX?
Using weekly returns as of 2026-08-27: -0.27 over 3 years, with -0.12 over the last year and -0.16 over 5 years.
Is PDEX a good diversifier for APTV?
Yes. With a correlation of -0.27, APTV and PDEX have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.27 mean?
On the −1 to +1 scale, -0.27 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/aptv-vs-pdex.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/aptv-vs-pdex/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: APTV correlations · PDEX correlations
