CET vs VOO: Correlation
Measured on weekly returns over the past three years, Central Securities Corporation (CET) and Vanguard S&P 500 ETF (VOO) carry a correlation of 0.89, a very strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CET and VOO?
Across a 3-year window, the weekly returns of CET and VOO correlate at 0.89, very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.83 lands near the 3-year figure. Stretching to 5 years gives 0.86, with an annualized covariance of 162.8 %².
Few assets follow CET as closely as VOO, which ranks #3 of 38 tracked partners. Twelve-month performance is nearly a tie, at +15.7% for CET and +20.6% for VOO.
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.
CET vs VOO: side by side
| CET (Central Securities Corporation) | VOO (Vanguard S&P 500 ETF) | |
|---|---|---|
| 1-year return | +15.7% | +20.6% |
| 5-year return | +73.3% | +83.0% |
| Volatility (ann.) | 12.8% | 14.4% |
| Beta vs S&P 500 | 0.78 | 0.99 |
| Max drawdown (3Y) | -15.4% | -18.7% |
| Market cap | – | – |
| P/E (trailing) | 7.3 | – |
| Dividend yield | 5.03% | 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 | CET | VOO |
|---|---|---|
| 2022 | -19.7% | -18.2% |
| 2023 | +19.2% | +26.3% |
| 2024 | +26.8% | +25.0% |
| 2025 | +17.2% | +17.8% |
| 2026 | +8.3% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CET and VOO good diversifiers for each other?
No. With a correlation of 0.89, CET and VOO move nearly in lockstep, so holding both adds very little diversification.
FAQ
What is the correlation between CET and VOO?
As of 2026-08-27, the correlation of weekly returns between CET and VOO is 0.89 over 3 years, 0.83 over 1 year and 0.86 over 5 years.
Is VOO a good diversifier for CET?
No. With a correlation of 0.89, CET and VOO move nearly in lockstep, so holding both adds very little diversification.
What does a correlation of 0.89 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
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Related comparisons
Hubs: CET correlations · VOO correlations
