SEI vs SPY: Correlation
Solaris Energy Infrastructure, Inc. (SEI) and SPDR S&P 500 ETF Trust (SPY) show a moderate relationship: their 3-year correlation of weekly returns is 0.36.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SEI and SPY?
Over the past 3 years, SEI and SPY moved with a correlation of 0.36, which is moderate. The relationship has been stable: the 1-year correlation (0.27) sits close to the 3-year figure. Over 5 years the correlation is 0.34, and the annualized covariance of weekly returns is 373.4 %².
By 3-year correlation, SPY places #6 of the 12 assets tracked against SEI. The last year tells two different stories: SEI led by 59.6 percentage points, +80.2% for SEI against +20.6% for SPY. Risk is not evenly split, since SEI carries 5.0 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.
SEI vs SPY: side by side
| SEI (Solaris Energy Infrastructure, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +80.2% | +20.6% |
| 5-year return | +759.3% | +82.4% |
| Volatility (ann.) | 72.5% | 14.5% |
| Beta vs S&P 500 | 1.79 | 1.00 |
| Max drawdown (3Y) | -55.4% | -18.8% |
| Market cap | $5.3B | – |
| P/E (trailing) | 66.1 | – |
| Dividend yield | 0.93% | 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 | SEI | SPY |
|---|---|---|
| 2022 | +57.5% | -18.2% |
| 2023 | -15.7% | +26.2% |
| 2024 | +277.7% | +24.9% |
| 2025 | +62.3% | +17.7% |
| 2026 | +15.4% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SEI and SPY good diversifiers for each other?
Reasonably. At 0.36, SEI and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between SEI and SPY?
The SEI/SPY correlation stands at 0.36 on a 3-year window (1 year: 0.27, 5 years: 0.34), computed from weekly returns as of 2026-08-27.
Is SPY a good diversifier for SEI?
Reasonably. At 0.36, SEI and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 mean?
On the −1 to +1 scale, 0.36 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
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Related comparisons
Hubs: SEI correlations · SPY correlations
