RBRK vs SO: Correlation
How closely do Rubrik, Inc. (RBRK) and Southern Company (SO) trade together? Their weekly returns over three years give a correlation of -0.28, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RBRK and SO?
Over the past 3 years, RBRK and SO moved with a correlation of -0.28, which is negative, meaning they tend to move in opposite directions. Little has changed lately, as the 1-year reading of -0.20 lands near the 3-year figure. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is -280.1 %².
SO is close to the least connected end of RBRK's tracked universe, ranking #17 of 20. Their recent paths diverged sharply: over the last 12 months RBRK outperformed by 23.7 percentage points (+22.3% for RBRK against -1.4% for SO). Risk is not evenly split, since RBRK carries 3.9 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.
RBRK vs SO: side by side
| RBRK (Rubrik, Inc.) | SO (Southern Company) | |
|---|---|---|
| 1-year return | +22.3% | -1.4% |
| 5-year return | n/a | +62.6% |
| Volatility (ann.) | 63.9% | 16.5% |
| Beta vs S&P 500 | 1.92 | -0.02 |
| Max drawdown (3Y) | -56.1% | -15.0% |
| Market cap | $22.0B | $102.4B |
| P/E (trailing) | – | 21.7 |
| Dividend yield | 0.00% | 3.32% |
| Sector / category | US Listed | Utilities |
Year-by-year returns
| Year | RBRK | SO |
|---|---|---|
| 2022 | – | +8.2% |
| 2023 | – | +2.2% |
| 2024 | – | +21.7% |
| 2025 | +17.0% | +9.5% |
| 2026 | +39.9% | +4.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RBRK and SO good diversifiers for each other?
By historical standards, yes. A correlation of -0.28 means the two rarely move for the same reasons.
FAQ
What is the correlation between RBRK and SO?
The RBRK/SO correlation stands at -0.28 on a 3-year window (1 year: -0.20, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is SO a good diversifier for RBRK?
By historical standards, yes. A correlation of -0.28 means the two rarely move for the same reasons.
What does a correlation of -0.28 mean?
A reading of -0.28 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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Hubs: RBRK correlations · SO correlations
