MDB vs SO: Correlation
How closely do MongoDB, Inc. (MDB) 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 MDB and SO?
Over the past 3 years, MDB and SO moved with a correlation of -0.28, which is negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.31) sits close to the 3-year figure. Over 5 years the correlation is -0.09, and the annualized covariance of weekly returns is -290.6 %².
SO is close to the least connected end of MDB's tracked universe, ranking #11 of 14. Correlation aside, the last 12 months split them widely, with MDB ahead by 50.4 points (+49.0% versus -1.4%). Risk is not evenly split, since MDB carries 3.8 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.
MDB vs SO: side by side
| MDB (MongoDB, Inc.) | SO (Southern Company) | |
|---|---|---|
| 1-year return | +49.0% | -1.4% |
| 5-year return | +11.2% | +62.6% |
| Volatility (ann.) | 63.4% | 16.5% |
| Beta vs S&P 500 | 1.93 | -0.02 |
| Max drawdown (3Y) | -70.9% | -15.0% |
| Market cap | $35.4B | $102.4B |
| P/E (trailing) | – | 21.7 |
| Dividend yield | 0.00% | 3.32% |
| Sector / category | US Listed | Utilities |
Year-by-year returns
| Year | MDB | SO |
|---|---|---|
| 2022 | -62.8% | +8.2% |
| 2023 | +107.7% | +2.2% |
| 2024 | -43.1% | +21.7% |
| 2025 | +80.3% | +9.5% |
| 2026 | +5.0% | +4.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MDB and SO good diversifiers for each other?
Yes: at -0.28, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between MDB and SO?
As of 2026-08-27, the correlation of weekly returns between MDB and SO is -0.28 over 3 years, -0.31 over 1 year and -0.09 over 5 years.
Is SO a good diversifier for MDB?
Yes: at -0.28, the two have gone their own ways historically, which is what genuine diversification looks like.
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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Related comparisons
Hubs: MDB correlations · SO correlations
