ACH vs SPY: Correlation
Accendra Health, Inc. (ACH) and SPDR S&P 500 ETF Trust (SPY) show a weak relationship: their 3-year correlation of weekly returns is 0.22.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACH and SPY?
Over the past 3 years, ACH and SPY moved with a correlation of 0.22, which is weak. Little has changed lately, as the 1-year reading of 0.23 lands near the 3-year figure. Over 5 years the correlation is 0.29, and the annualized covariance of weekly returns is 286.5 %².
Among the 16 assets we track against ACH, SPY ranks #6 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months SPY outperformed by 95.9 percentage points (-75.3% for ACH against +20.6% for SPY). Risk is not evenly split, since ACH carries 6.1 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.
ACH vs SPY: side by side
| ACH (Accendra Health, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -75.3% | +20.6% |
| 5-year return | -96.8% | +82.4% |
| Volatility (ann.) | 89.1% | 14.5% |
| Beta vs S&P 500 | 1.37 | 1.00 |
| Max drawdown (3Y) | -96.6% | -18.8% |
| Market cap | $0.1B | – |
| 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 | ACH | SPY |
|---|---|---|
| 2022 | -55.1% | -18.2% |
| 2023 | -1.3% | +26.2% |
| 2024 | -32.2% | +24.9% |
| 2025 | -78.6% | +17.7% |
| 2026 | -56.8% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACH and SPY good diversifiers for each other?
A fair diversifier. At 0.22, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ACH and SPY?
As of 2026-08-27, the correlation of weekly returns between ACH and SPY is 0.22 over 3 years, 0.23 over 1 year and 0.29 over 5 years.
Is SPY a good diversifier for ACH?
A fair diversifier. At 0.22, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.22 mean?
A reading of 0.22 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: ACH correlations · SPY correlations
