OST vs WINA: Correlation
How closely do Ostin Technology Group Co., Ltd. - Class A (OST) and Winmark Corporation (WINA) trade together? Their weekly returns over three years give a correlation of 0.32, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are OST and WINA?
Across a 3-year window, the weekly returns of OST and WINA correlate at 0.32, moderate. The link has loosened recently: the 1-year correlation (0.11) runs below the 3-year figure (0.32). Stretching to 5 years gives 0.25, with an annualized covariance of 1298.5 %².
Among the 10 assets we track against OST, WINA ranks #4 by 3-year correlation. The trailing year gives OST the advantage: -12.6% versus -24.3%, a 11.7-point spread. Risk is not evenly split, since OST carries 3.3 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.
OST vs WINA: side by side
| OST (Ostin Technology Group Co., Ltd. - Class A) | WINA (Winmark Corporation) | |
|---|---|---|
| 1-year return | -12.6% | -24.3% |
| 5-year return | -100.0% | +89.5% |
| Volatility (ann.) | 115.4% | 35.4% |
| Beta vs S&P 500 | 0.39 | 0.47 |
| Max drawdown (3Y) | -99.4% | -34.0% |
| Market cap | – | $1.2B |
| P/E (trailing) | – | 30.4 |
| Dividend yield | 0.00% | 1.13% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | OST | WINA |
|---|---|---|
| 2022 | – | -2.8% |
| 2023 | -17.4% | +82.6% |
| 2024 | -65.7% | -3.3% |
| 2025 | -97.5% | +6.4% |
| 2026 | +0.0% | -16.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are OST and WINA good diversifiers for each other?
A fair diversifier. At 0.32, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between OST and WINA?
As of 2026-08-27, the correlation of weekly returns between OST and WINA is 0.32 over 3 years, 0.11 over 1 year and 0.25 over 5 years.
Is WINA a good diversifier for OST?
A fair diversifier. At 0.32, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.32 mean?
On the −1 to +1 scale, 0.32 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: OST correlations · WINA correlations
