DUK vs KLAC: Correlation
How closely do Duke Energy (DUK) and KLA Corporation (KLAC) trade together? Their weekly returns over three years give a correlation of -0.18, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DUK and KLAC?
On 3 years of weekly data the DUK/KLAC correlation comes out at -0.18, negative, meaning they tend to move in opposite directions. Lately the two have moved closer together, with the 1-year correlation at -0.02 versus -0.18 over 3 years. The 5-year figure is -0.04, and annualized covariance runs at -133.5 %².
Within DUK's tracked universe of 53 assets, KLAC comes in at #29 by 3-year correlation. The last year tells two different stories: KLAC led by 106.8 percentage points, +1.1% for DUK against +107.9% for KLAC. The relationship is regime-dependent: the rolling one-year correlation swung between -0.51 and 0.17 over the past three years, so this pair behaves very differently depending on the market environment. Risk is not evenly split, since KLAC carries 2.9 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.
DUK vs KLAC: side by side
| DUK (Duke Energy) | KLAC (KLA Corporation) | |
|---|---|---|
| 1-year return | +1.1% | +107.9% |
| 5-year return | +39.8% | +463.9% |
| Volatility (ann.) | 15.9% | 45.6% |
| Beta vs S&P 500 | -0.09 | 1.84 |
| Max drawdown (3Y) | -11.6% | -43.6% |
| Market cap | $94.2B | $240.1B |
| P/E (trailing) | 18.3 | 50.2 |
| Dividend yield | 3.49% | 0.44% |
| Sector / category | Utilities | Information Technology |
Year-by-year returns
| Year | DUK | KLAC |
|---|---|---|
| 2022 | +2.0% | -11.2% |
| 2023 | -1.6% | +56.0% |
| 2024 | +15.6% | +9.4% |
| 2025 | +12.7% | +94.5% |
| 2026 | +5.8% | +51.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DUK and KLAC good diversifiers for each other?
Yes: at -0.18, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between DUK and KLAC?
The DUK/KLAC correlation stands at -0.18 on a 3-year window (1 year: -0.02, 5 years: -0.04), computed from weekly returns as of 2026-08-27.
Is KLAC a good diversifier for DUK?
Yes: at -0.18, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.18 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/duk-vs-klac.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/duk-vs-klac/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: DUK correlations · KLAC correlations
