ASTC vs ZCMD: Correlation
Astrotech Corporation (ASTC) and Zhongchao Inc. - Class A (ZCMD) show a negative relationship: their 3-year correlation of weekly returns is -0.34.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ASTC and ZCMD?
Across a 3-year window, the weekly returns of ASTC and ZCMD correlate at -0.34, negative, meaning they tend to move in opposite directions. The link has loosened recently: the 1-year correlation (-0.45) runs below the 3-year figure (-0.34). Stretching to 5 years gives -0.33, with an annualized covariance of -57950.3 %².
Among the 47 assets we track against ASTC, ZCMD sits near the bottom by co-movement, at rank #43. Correlation aside, the last 12 months split them widely, with ASTC ahead by 137.4 points (+37.5% versus -99.9%). Note the risk asymmetry: ASTC runs 8.5 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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 ZCMD: side by side
| ASTC (Astrotech Corporation) | ZCMD (Zhongchao Inc. - Class A) | |
|---|---|---|
| 1-year return | +37.5% | -99.9% |
| 5-year return | -78.4% | -100.0% |
| Volatility (ann.) | 1206.9% | 141.8% |
| Beta vs S&P 500 | 4.81 | 0.59 |
| Max drawdown (3Y) | -87.5% | -100.0% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ASTC | ZCMD |
|---|---|---|
| 2022 | -51.0% | -35.4% |
| 2023 | -15.0% | -69.5% |
| 2024 | -20.8% | -53.8% |
| 2025 | -48.5% | -72.2% |
| 2026 | +105.8% | -99.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ASTC and ZCMD good diversifiers for each other?
Yes: at -0.34, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between ASTC and ZCMD?
Using weekly returns as of 2026-08-27: -0.34 over 3 years, with -0.45 over the last year and -0.33 over 5 years.
Is ZCMD a good diversifier for ASTC?
Yes: at -0.34, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.34 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/astc-vs-zcmd.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/astc-vs-zcmd/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ASTC correlations · ZCMD correlations
