KLAC vs SO: Correlation
KLA Corporation (KLAC) and Southern Company (SO) show a negative relationship: their 3-year correlation of weekly returns is -0.16.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are KLAC and SO?
On 3 years of weekly data the KLAC/SO correlation comes out at -0.16, negative, meaning they tend to move in opposite directions. The link has tightened recently: the 1-year correlation (-0.05) runs above the 3-year figure (-0.16). The 5-year figure is -0.04, and annualized covariance runs at -122.9 %².
Among the 40 assets we track against KLAC, SO ranks #31 by 3-year correlation. The last year tells two different stories: KLAC led by 109.3 percentage points, +107.9% for KLAC against -1.4% for SO. The relationship is regime-dependent: the rolling one-year correlation swung between -0.51 and 0.07 over the past three years, so this pair behaves very differently depending on the market environment. One caveat on sizing: KLAC is 2.8 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
KLAC vs SO: side by side
| KLAC (KLA Corporation) | SO (Southern Company) | |
|---|---|---|
| 1-year return | +107.9% | -1.4% |
| 5-year return | +463.9% | +62.6% |
| Volatility (ann.) | 45.6% | 16.5% |
| Beta vs S&P 500 | 1.84 | -0.02 |
| Max drawdown (3Y) | -43.6% | -15.0% |
| Market cap | $240.1B | $102.4B |
| P/E (trailing) | 50.2 | 21.7 |
| Dividend yield | 0.44% | 3.32% |
| Sector / category | Information Technology | Utilities |
Year-by-year returns
| Year | KLAC | SO |
|---|---|---|
| 2022 | -11.2% | +8.2% |
| 2023 | +56.0% | +2.2% |
| 2024 | +9.4% | +21.7% |
| 2025 | +94.5% | +9.5% |
| 2026 | +51.8% | +4.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are KLAC and SO good diversifiers for each other?
Yes: at -0.16, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between KLAC and SO?
The KLAC/SO correlation stands at -0.16 on a 3-year window (1 year: -0.05, 5 years: -0.04), computed from weekly returns as of 2026-08-27.
Is SO a good diversifier for KLAC?
Yes: at -0.16, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.16 mean?
A reading of -0.16 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: KLAC correlations · SO correlations
