OST vs SPY: Correlation
Measured on weekly returns over the past three years, Ostin Technology Group Co., Ltd. - Class A (OST) and SPDR S&P 500 ETF Trust (SPY) carry a correlation of 0.05, a near-zero link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are OST and SPY?
On 3 years of weekly data the OST/SPY correlation comes out at 0.05, near zero, meaning they move largely independently. Recent behaviour matches the longer record: 0.05 over 1 year against 0.05 over 3. The 5-year figure is 0.10, and annualized covariance runs at 81.6 %².
Among the 10 assets we track against OST, SPY sits near the bottom by co-movement, at rank #6. The last year tells two different stories: SPY led by 33.2 percentage points, -12.6% for OST against +20.6% for SPY. Note the risk asymmetry: OST runs 8.0 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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 SPY: side by side
| OST (Ostin Technology Group Co., Ltd. - Class A) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -12.6% | +20.6% |
| 5-year return | -100.0% | +82.4% |
| Volatility (ann.) | 115.4% | 14.5% |
| Beta vs S&P 500 | 0.39 | 1.00 |
| Max drawdown (3Y) | -99.4% | -18.8% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 1.01% |
| Expense ratio | – | 0.09% |
| Assets under management | – | $795.3B |
| Sector / category | US Listed | ETF · US Large Cap |
SPY is a Large Blend fund from State Street Investment Management: $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | OST | SPY |
|---|---|---|
| 2022 | – | -18.2% |
| 2023 | -17.4% | +26.2% |
| 2024 | -65.7% | +24.9% |
| 2025 | -97.5% | +17.7% |
| 2026 | +0.0% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are OST and SPY good diversifiers for each other?
Yes. With a correlation of 0.05, OST and SPY have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between OST and SPY?
As of 2026-08-27, the correlation of weekly returns between OST and SPY is 0.05 over 3 years, 0.05 over 1 year and 0.10 over 5 years.
Is SPY a good diversifier for OST?
Yes. With a correlation of 0.05, OST and SPY have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of 0.05 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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Hubs: OST correlations · SPY correlations
