CASY vs KLAC: Correlation
Casey's (CASY) and KLA Corporation (KLAC) show a moderate relationship: their 3-year correlation of weekly returns is 0.31.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CASY and KLAC?
On 3 years of weekly data the CASY/KLAC correlation comes out at 0.31, moderate. Recent behaviour matches the longer record: 0.38 over 1 year against 0.31 over 3. The 5-year figure is 0.33, and annualized covariance runs at 402.6 %².
Among the 30 assets we track against CASY, KLAC ranks #13 by 3-year correlation. The last year tells two different stories: KLAC led by 54.2 percentage points, +53.7% for CASY against +107.9% for KLAC. This link changes with the market regime, having swung between -0.17 and 0.48 on a rolling one-year basis. One caveat on sizing: KLAC is 1.6 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.
CASY vs KLAC: side by side
| CASY (Casey's) | KLAC (KLA Corporation) | |
|---|---|---|
| 1-year return | +53.7% | +107.9% |
| 5-year return | +284.3% | +463.9% |
| Volatility (ann.) | 28.9% | 45.6% |
| Beta vs S&P 500 | 0.39 | 1.84 |
| Max drawdown (3Y) | -16.6% | -43.6% |
| Market cap | $28.2B | $240.1B |
| P/E (trailing) | 42.2 | 50.2 |
| Dividend yield | 0.28% | 0.44% |
| Sector / category | Consumer Staples | Information Technology |
Year-by-year returns
| Year | CASY | KLAC |
|---|---|---|
| 2022 | +14.5% | -11.2% |
| 2023 | +23.3% | +56.0% |
| 2024 | +45.0% | +9.4% |
| 2025 | +40.1% | +94.5% |
| 2026 | +38.4% | +51.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CASY and KLAC good diversifiers for each other?
Reasonably. At 0.31, CASY and KLAC keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between CASY and KLAC?
As of 2026-08-27, the correlation of weekly returns between CASY and KLAC is 0.31 over 3 years, 0.38 over 1 year and 0.33 over 5 years.
Is KLAC a good diversifier for CASY?
Reasonably. At 0.31, CASY and KLAC keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.31 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/casy-vs-klac.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/casy-vs-klac/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: CASY correlations · KLAC correlations
