KOSS vs SNOA: Correlation
How closely do Koss Corporation (KOSS) and Sonoma Pharmaceuticals, Inc. (SNOA) trade together? Their weekly returns over three years give a correlation of 0.39, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are KOSS and SNOA?
On 3 years of weekly data the KOSS/SNOA correlation comes out at 0.39, moderate. The link has loosened recently: the 1-year correlation (-0.09) runs below the 3-year figure (0.39). The 5-year figure is 0.38, and annualized covariance runs at 6476.7 %².
By 3-year correlation, SNOA places #5 of the 12 assets tracked against KOSS. The last year tells two different stories: KOSS led by 24.3 percentage points, -46.6% for KOSS against -70.9% for SNOA.
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.
KOSS vs SNOA: side by side
| KOSS (Koss Corporation) | SNOA (Sonoma Pharmaceuticals, Inc.) | |
|---|---|---|
| 1-year return | -46.6% | -70.9% |
| 5-year return | -81.0% | -98.9% |
| Volatility (ann.) | 129.9% | 127.6% |
| Beta vs S&P 500 | 1.64 | 2.43 |
| Max drawdown (3Y) | -74.4% | -95.0% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | KOSS | SNOA |
|---|---|---|
| 2022 | -53.7% | -75.4% |
| 2023 | -32.3% | -83.9% |
| 2024 | +120.3% | -25.3% |
| 2025 | -43.9% | +35.3% |
| 2026 | -17.4% | -63.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are KOSS and SNOA good diversifiers for each other?
Reasonably. At 0.39, KOSS and SNOA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between KOSS and SNOA?
As of 2026-08-27, the correlation of weekly returns between KOSS and SNOA is 0.39 over 3 years, -0.09 over 1 year and 0.38 over 5 years.
Is SNOA a good diversifier for KOSS?
Reasonably. At 0.39, KOSS and SNOA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.39 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.
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Related comparisons
Hubs: KOSS correlations · SNOA correlations
