AIMD vs SPY: Correlation
How closely do Ainos, Inc. (AIMD) and SPDR S&P 500 ETF Trust (SPY) trade together? Their weekly returns over three years give a correlation of 0.20, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AIMD and SPY?
Over the past 3 years, AIMD and SPY moved with a correlation of 0.20, which is weak. Lately the two have moved closer together, with the 1-year correlation at 0.45 versus 0.20 over 3 years. Over 5 years the correlation is 0.18, and the annualized covariance of weekly returns is 348.0 %².
Among the 11 assets we track against AIMD, SPY sits near the bottom by co-movement, at rank #8. The last year tells two different stories: SPY led by 83.2 percentage points, -62.6% for AIMD against +20.6% for SPY. Risk is not evenly split, since AIMD carries 8.1 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.
AIMD vs SPY: side by side
| AIMD (Ainos, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -62.6% | +20.6% |
| 5-year return | -99.6% | +82.4% |
| Volatility (ann.) | 117.9% | 14.5% |
| Beta vs S&P 500 | 1.67 | 1.00 |
| Max drawdown (3Y) | -94.0% | -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 | AIMD | SPY |
|---|---|---|
| 2022 | -95.1% | -18.2% |
| 2023 | -33.9% | +26.2% |
| 2024 | -77.8% | +24.9% |
| 2025 | -28.1% | +17.7% |
| 2026 | -13.4% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AIMD and SPY good diversifiers for each other?
A fair diversifier. At 0.20, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between AIMD and SPY?
Using weekly returns as of 2026-08-27: 0.20 over 3 years, with 0.45 over the last year and 0.18 over 5 years.
Is SPY a good diversifier for AIMD?
A fair diversifier. At 0.20, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.20 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: AIMD correlations · SPY correlations
