EJH vs SOTK: Correlation
How closely do E-Home Household Service Holdings Limited (EJH) and Sono-Tek Corporation (SOTK) trade together? Their weekly returns over three years give a correlation of -0.22, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EJH and SOTK?
Across a 3-year window, the weekly returns of EJH and SOTK correlate at -0.22, negative, meaning they tend to move in opposite directions. Little has changed lately, as the 1-year reading of -0.19 lands near the 3-year figure. Stretching to 5 years gives -0.09, with an annualized covariance of -1236.9 %².
By 3-year correlation, SOTK places #24 of the 38 assets tracked against EJH. Their recent paths diverged sharply: over the last 12 months SOTK outperformed by 146.1 percentage points (-96.0% for EJH against +50.1% for SOTK). One caveat on sizing: EJH is 5.0 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.
EJH vs SOTK: side by side
| EJH (E-Home Household Service Holdings Limited) | SOTK (Sono-Tek Corporation) | |
|---|---|---|
| 1-year return | -96.0% | +50.1% |
| 5-year return | -100.0% | +46.2% |
| Volatility (ann.) | 167.4% | 33.8% |
| Beta vs S&P 500 | -1.07 | 0.46 |
| Max drawdown (3Y) | -100.0% | -46.5% |
| Market cap | – | $0.1B |
| P/E (trailing) | 0.0 | 38.7 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | EJH | SOTK |
|---|---|---|
| 2022 | -98.5% | -13.6% |
| 2023 | -90.7% | -15.7% |
| 2024 | -99.7% | -25.9% |
| 2025 | -97.6% | +3.0% |
| 2026 | -93.1% | +21.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EJH and SOTK good diversifiers for each other?
By historical standards, yes. A correlation of -0.22 means the two rarely move for the same reasons.
FAQ
What is the correlation between EJH and SOTK?
The EJH/SOTK correlation stands at -0.22 on a 3-year window (1 year: -0.19, 5 years: -0.09), computed from weekly returns as of 2026-08-27.
Is SOTK a good diversifier for EJH?
By historical standards, yes. A correlation of -0.22 means the two rarely move for the same reasons.
What does a correlation of -0.22 mean?
On the −1 to +1 scale, -0.22 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.
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Related comparisons
Hubs: EJH correlations · SOTK correlations
