ECVT vs SPY: Correlation
Measured on weekly returns over the past three years, Ecovyst Inc. (ECVT) and SPDR S&P 500 ETF Trust (SPY) carry a correlation of 0.30, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ECVT and SPY?
Across a 3-year window, the weekly returns of ECVT and SPY correlate at 0.30, moderate. The past 12 months show a weaker link (-0.03) than the 3-year average (0.30). Stretching to 5 years gives 0.36, with an annualized covariance of 171.7 %².
Among the 13 assets we track against ECVT, SPY sits near the bottom by co-movement, at rank #9. The trailing year gives SPY the advantage: +11.5% versus +20.6%, a 9.1-point spread. Note the risk asymmetry: ECVT runs 2.7 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.
ECVT vs SPY: side by side
| ECVT (Ecovyst Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +11.5% | +20.6% |
| 5-year return | -23.2% | +82.4% |
| Volatility (ann.) | 39.7% | 14.5% |
| Beta vs S&P 500 | 0.82 | 1.00 |
| Max drawdown (3Y) | -52.2% | -18.8% |
| Market cap | $1.1B | – |
| P/E (trailing) | 44.1 | – |
| 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 | ECVT | SPY |
|---|---|---|
| 2022 | -13.5% | -18.2% |
| 2023 | +10.3% | +26.2% |
| 2024 | -21.8% | +24.9% |
| 2025 | +27.4% | +17.7% |
| 2026 | +4.3% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ECVT and SPY good diversifiers for each other?
A fair diversifier. At 0.30, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ECVT and SPY?
The ECVT/SPY correlation stands at 0.30 on a 3-year window (1 year: -0.03, 5 years: 0.36), computed from weekly returns as of 2026-08-27.
Is SPY a good diversifier for ECVT?
A fair diversifier. At 0.30, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.30 mean?
A reading of 0.30 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: ECVT correlations · SPY correlations
