RGC vs ZKIN: Correlation
Measured on weekly returns over the past three years, Regencell Bioscience Holdings Limited (RGC) and ZK International Group Co., Ltd (ZKIN) carry a correlation of 0.33, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RGC and ZKIN?
On 3 years of weekly data the RGC/ZKIN correlation comes out at 0.33, moderate. The past 12 months show a weaker link (0.17) than the 3-year average (0.33). The 5-year figure is 0.33, and annualized covariance runs at 43616.0 %².
By 3-year correlation, ZKIN places #6 of the 25 assets tracked against RGC. Their recent paths diverged sharply: over the last 12 months ZKIN outperformed by 19.6 percentage points (-61.2% for RGC against -41.6% for ZKIN).
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.
RGC vs ZKIN: side by side
| RGC (Regencell Bioscience Holdings Limited) | ZKIN (ZK International Group Co., Ltd) | |
|---|---|---|
| 1-year return | -61.2% | -41.6% |
| 5-year return | +626.3% | -68.9% |
| Volatility (ann.) | 441.0% | 296.5% |
| Beta vs S&P 500 | -2.00 | -1.03 |
| Max drawdown (3Y) | -93.9% | -74.7% |
| Market cap | – | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | RGC | ZKIN |
|---|---|---|
| 2022 | -12.4% | -70.6% |
| 2023 | -62.4% | +140.2% |
| 2024 | -53.0% | -38.8% |
| 2025 | +16053.8% | +150.0% |
| 2026 | -73.7% | -23.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RGC and ZKIN good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.33 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between RGC and ZKIN?
As of 2026-08-27, the correlation of weekly returns between RGC and ZKIN is 0.33 over 3 years, 0.17 over 1 year and 0.33 over 5 years.
Is ZKIN a good diversifier for RGC?
Yes, to a useful degree: a correlation of 0.33 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.33 mean?
A reading of 0.33 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/rgc-vs-zkin.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/rgc-vs-zkin/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: RGC correlations · ZKIN correlations
