UDR vs ZCMD: Correlation
UDR, Inc. (UDR) and Zhongchao Inc. - Class A (ZCMD) show a negative relationship: their 3-year correlation of weekly returns is -0.20.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are UDR and ZCMD?
Over the past 3 years, UDR and ZCMD moved with a correlation of -0.20, which is negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.29) sits close to the 3-year figure. Over 5 years the correlation is -0.14, and the annualized covariance of weekly returns is -608.8 %².
Within UDR's tracked universe of 32 assets, ZCMD comes in at #27 by 3-year correlation. Correlation aside, the last 12 months split them widely, with UDR ahead by 99.3 points (-0.6% versus -99.9%). Risk is not evenly split, since ZCMD carries 6.7 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.
UDR vs ZCMD: side by side
| UDR (UDR, Inc.) | ZCMD (Zhongchao Inc. - Class A) | |
|---|---|---|
| 1-year return | -0.6% | -99.9% |
| 5-year return | -15.5% | -100.0% |
| Volatility (ann.) | 21.1% | 141.8% |
| Beta vs S&P 500 | 0.54 | 0.59 |
| Max drawdown (3Y) | -24.9% | -100.0% |
| Market cap | $13.6B | – |
| P/E (trailing) | 23.9 | – |
| Dividend yield | 4.56% | 0.00% |
| Sector / category | Real Estate | US Listed |
Year-by-year returns
| Year | UDR | ZCMD |
|---|---|---|
| 2022 | -33.4% | -35.4% |
| 2023 | +3.1% | -69.5% |
| 2024 | +18.3% | -53.8% |
| 2025 | -11.8% | -72.2% |
| 2026 | +4.3% | -99.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are UDR and ZCMD good diversifiers for each other?
Yes: at -0.20, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between UDR and ZCMD?
As of 2026-08-27, the correlation of weekly returns between UDR and ZCMD is -0.20 over 3 years, -0.29 over 1 year and -0.14 over 5 years.
Is ZCMD a good diversifier for UDR?
Yes: at -0.20, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.20 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/udr-vs-zcmd.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/udr-vs-zcmd/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: UDR correlations · ZCMD correlations
