RSP vs SGI: Correlation
Measured on weekly returns over the past three years, Invesco S&P 500 Equal Weight ETF (RSP) and Somnigroup International Inc. (SGI) carry a correlation of 0.63, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RSP and SGI?
On 3 years of weekly data the RSP/SGI correlation comes out at 0.63, strong. The relationship has been stable: the 1-year correlation (0.58) sits close to the 3-year figure. The 5-year figure is 0.66, and annualized covariance runs at 281.1 %².
Among the 250 assets we track against RSP, SGI ranks #103 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months RSP outperformed by 44.6 percentage points (+19.2% for RSP against -25.4% for SGI). Risk is not evenly split, since SGI carries 2.6 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.
RSP vs SGI: side by side
| RSP (Invesco S&P 500 Equal Weight ETF) | SGI (Somnigroup International Inc.) | |
|---|---|---|
| 1-year return | +19.2% | -25.4% |
| 5-year return | +53.9% | +44.9% |
| Volatility (ann.) | 13.2% | 33.8% |
| Beta vs S&P 500 | 0.77 | 1.02 |
| Max drawdown (3Y) | -17.8% | -37.1% |
| Market cap | – | $13.1B |
| P/E (trailing) | – | 24.8 |
| Dividend yield | 1.49% | 1.02% |
| Expense ratio | 0.20% | – |
| Assets under management | $97.3B | – |
| Sector / category | ETF · US Large Cap | US Listed |
RSP, Invesco's Large Blend fund, carries $97.3B under management, 505 holdings, a 0.20% expense ratio, a 1.49% trailing dividend yield.
Year-by-year returns
| Year | RSP | SGI |
|---|---|---|
| 2022 | -11.6% | -26.0% |
| 2023 | +13.7% | +50.1% |
| 2024 | +12.8% | +12.3% |
| 2025 | +11.2% | +58.8% |
| 2026 | +16.5% | -29.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RSP and SGI good diversifiers for each other?
Only partially. A correlation of 0.63 means RSP and SGI share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between RSP and SGI?
As of 2026-08-27, the correlation of weekly returns between RSP and SGI is 0.63 over 3 years, 0.58 over 1 year and 0.66 over 5 years.
Is SGI a good diversifier for RSP?
Only partially. A correlation of 0.63 means RSP and SGI share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.63 mean?
A reading of 0.63 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: RSP correlations · SGI correlations
