ADX vs VOO: Correlation
How closely do Adams Diversified Equity Fund Inc. (ADX) and Vanguard S&P 500 ETF (VOO) trade together? Their weekly returns over three years give a correlation of 0.89, which is very strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ADX and VOO?
Over the past 3 years, ADX and VOO moved with a correlation of 0.89, which is very strong, meaning they move nearly in lockstep. The link has loosened recently: the 1-year correlation (0.72) runs below the 3-year figure (0.89). Over 5 years the correlation is 0.89, and the annualized covariance of weekly returns is 199.6 %².
In ADX's tracked universe of 12 assets, VOO sits right near the top at #1. The trailing year gives ADX the advantage: +29.5% versus +20.6%, a 8.9-point spread.
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.
ADX vs VOO: side by side
| ADX (Adams Diversified Equity Fund Inc.) | VOO (Vanguard S&P 500 ETF) | |
|---|---|---|
| 1-year return | +29.5% | +20.6% |
| 5-year return | +88.9% | +83.0% |
| Volatility (ann.) | 15.7% | 14.4% |
| Beta vs S&P 500 | 0.96 | 0.99 |
| Max drawdown (3Y) | -18.3% | -18.7% |
| Market cap | $3.3B | – |
| P/E (trailing) | 5.3 | – |
| Dividend yield | 7.26% | 1.07% |
| Expense ratio | – | 0.03% |
| Assets under management | – | $1,686.9B |
| Sector / category | US Listed | ETF · US Large Cap |
VOO, Vanguard's Large Blend fund, carries $1,686.9B under management, 503 holdings, a 0.03% expense ratio, a 1.07% trailing dividend yield.
Year-by-year returns
| Year | ADX | VOO |
|---|---|---|
| 2022 | -19.8% | -18.2% |
| 2023 | +31.5% | +26.3% |
| 2024 | +28.3% | +25.0% |
| 2025 | +26.0% | +17.8% |
| 2026 | +18.5% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ADX and VOO good diversifiers for each other?
No: a correlation of 0.89 means ADX and VOO tend to fall together, which is precisely when diversification is supposed to help.
FAQ
What is the correlation between ADX and VOO?
Using weekly returns as of 2026-08-27: 0.89 over 3 years, with 0.72 over the last year and 0.89 over 5 years.
Is VOO a good diversifier for ADX?
No: a correlation of 0.89 means ADX and VOO tend to fall together, which is precisely when diversification is supposed to help.
What does a correlation of 0.89 mean?
On the −1 to +1 scale, 0.89 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: ADX correlations · VOO correlations
