ASTC vs AZO: Correlation
How closely do Astrotech Corporation (ASTC) and AutoZone (AZO) trade together? Their weekly returns over three years give a correlation of -0.35, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ASTC and AZO?
Across a 3-year window, the weekly returns of ASTC and AZO correlate at -0.35, negative, meaning they tend to move in opposite directions. Lately the two have drifted apart, with the 1-year correlation at -0.50 versus -0.35 over 3 years. Stretching to 5 years gives -0.25, with an annualized covariance of -9736.9 %².
AZO is close to the least connected end of ASTC's tracked universe, ranking #44 of 47. Correlation aside, the last 12 months split them widely, with ASTC ahead by 67.8 points (+37.5% versus -30.3%). Risk is not evenly split, since ASTC carries 52.0 times the volatility of the other side.
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.
ASTC vs AZO: side by side
| ASTC (Astrotech Corporation) | AZO (AutoZone) | |
|---|---|---|
| 1-year return | +37.5% | -30.3% |
| 5-year return | -78.4% | +88.5% |
| Volatility (ann.) | 1206.9% | 23.2% |
| Beta vs S&P 500 | 4.81 | 0.31 |
| Max drawdown (3Y) | -87.5% | -32.9% |
| Market cap | – | – |
| P/E (trailing) | – | 20.6 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | Consumer Discretionary |
Year-by-year returns
| Year | ASTC | AZO |
|---|---|---|
| 2022 | -51.0% | +17.6% |
| 2023 | -15.0% | +4.8% |
| 2024 | -20.8% | +23.8% |
| 2025 | -48.5% | +5.9% |
| 2026 | +105.8% | -13.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ASTC and AZO good diversifiers for each other?
Yes: at -0.35, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between ASTC and AZO?
Using weekly returns as of 2026-08-27: -0.35 over 3 years, with -0.50 over the last year and -0.25 over 5 years.
Is AZO a good diversifier for ASTC?
Yes: at -0.35, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.35 mean?
A reading of -0.35 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/astc-vs-azo.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/astc-vs-azo/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ASTC correlations · AZO correlations
