PERF vs SPY: Correlation
Measured on weekly returns over the past three years, Perfect Corp. Class A (PERF) and SPDR S&P 500 ETF Trust (SPY) carry a correlation of 0.24, a weak link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PERF and SPY?
Over the past 3 years, PERF and SPY moved with a correlation of 0.24, which is weak. Lately the two have drifted apart, with the 1-year correlation at 0.07 versus 0.24 over 3 years. Over 5 years the correlation is 0.20, and the annualized covariance of weekly returns is 193.7 %².
Among the 12 assets we track against PERF, SPY sits near the bottom by co-movement, at rank #9. Correlation aside, the last 12 months split them widely, with SPY ahead by 31.9 points (-11.3% versus +20.6%). Risk is not evenly split, since PERF carries 3.9 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.
PERF vs SPY: side by side
| PERF (Perfect Corp. Class A) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -11.3% | +20.6% |
| 5-year return | n/a | +82.4% |
| Volatility (ann.) | 56.3% | 14.5% |
| Beta vs S&P 500 | 0.93 | 1.00 |
| Max drawdown (3Y) | -67.5% | -18.8% |
| Market cap | $0.2B | – |
| P/E (trailing) | 31.3 | – |
| 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 | PERF | SPY |
|---|---|---|
| 2022 | – | -18.2% |
| 2023 | -56.6% | +26.2% |
| 2024 | -8.7% | +24.9% |
| 2025 | -36.0% | +17.7% |
| 2026 | +3.9% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PERF and SPY good diversifiers for each other?
A fair diversifier. At 0.24, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between PERF and SPY?
As of 2026-08-27, the correlation of weekly returns between PERF and SPY is 0.24 over 3 years, 0.07 over 1 year and 0.20 over 5 years.
Is SPY a good diversifier for PERF?
A fair diversifier. At 0.24, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.24 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: PERF correlations · SPY correlations
