DAL vs ZCMD: Correlation
Measured on weekly returns over the past three years, Delta Air Lines (DAL) and Zhongchao Inc. - Class A (ZCMD) carry a correlation of -0.20, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DAL and ZCMD?
On 3 years of weekly data the DAL/ZCMD correlation comes out at -0.20, negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.27) sits close to the 3-year figure. The 5-year figure is -0.11, and annualized covariance runs at -1070.4 %².
Among the 33 assets we track against DAL, ZCMD ranks #25 by 3-year correlation. Correlation aside, the last 12 months split them widely, with DAL ahead by 133.8 points (+33.9% versus -99.9%). One caveat on sizing: ZCMD is 3.8 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.
DAL vs ZCMD: side by side
| DAL (Delta Air Lines) | ZCMD (Zhongchao Inc. - Class A) | |
|---|---|---|
| 1-year return | +33.9% | -99.9% |
| 5-year return | +110.6% | -100.0% |
| Volatility (ann.) | 37.1% | 141.8% |
| Beta vs S&P 500 | 1.17 | 0.59 |
| Max drawdown (3Y) | -47.9% | -100.0% |
| Market cap | – | – |
| P/E (trailing) | 13.8 | – |
| Dividend yield | 0.94% | 0.00% |
| Sector / category | Industrials | US Listed |
Year-by-year returns
| Year | DAL | ZCMD |
|---|---|---|
| 2022 | -15.9% | -35.4% |
| 2023 | +23.0% | -69.5% |
| 2024 | +52.0% | -53.8% |
| 2025 | +16.1% | -72.2% |
| 2026 | +17.8% | -99.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DAL and ZCMD good diversifiers for each other?
Yes. With a correlation of -0.20, DAL and ZCMD have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between DAL and ZCMD?
The DAL/ZCMD correlation stands at -0.20 on a 3-year window (1 year: -0.27, 5 years: -0.11), computed from weekly returns as of 2026-08-27.
Is ZCMD a good diversifier for DAL?
Yes. With a correlation of -0.20, DAL and ZCMD have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.20 mean?
On the −1 to +1 scale, -0.20 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/dal-vs-zcmd.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/dal-vs-zcmd/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: DAL correlations · ZCMD correlations
