AEIS vs KLAC: Correlation
How closely do Advanced Energy Industries, Inc. (AEIS) and KLA Corporation (KLAC) trade together? Their weekly returns over three years give a correlation of 0.68, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AEIS and KLAC?
Across a 3-year window, the weekly returns of AEIS and KLAC correlate at 0.68, strong. Little has changed lately, as the 1-year reading of 0.72 lands near the 3-year figure. Stretching to 5 years gives 0.71, with an annualized covariance of 1352.3 %².
Within AEIS's tracked universe of 32 assets, KLAC comes in at #5 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months KLAC outperformed by 20.9 percentage points (+87.0% for AEIS against +107.9% for KLAC).
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.
AEIS vs KLAC: side by side
| AEIS (Advanced Energy Industries, Inc.) | KLAC (KLA Corporation) | |
|---|---|---|
| 1-year return | +87.0% | +107.9% |
| 5-year return | +222.9% | +463.9% |
| Volatility (ann.) | 43.9% | 45.6% |
| Beta vs S&P 500 | 1.69 | 1.84 |
| Max drawdown (3Y) | -39.9% | -43.6% |
| Market cap | $11.5B | $240.1B |
| P/E (trailing) | 52.4 | 50.2 |
| Dividend yield | 0.14% | 0.44% |
| Sector / category | US Listed | Information Technology |
Year-by-year returns
| Year | AEIS | KLAC |
|---|---|---|
| 2022 | -5.4% | -11.2% |
| 2023 | +27.5% | +56.0% |
| 2024 | +6.6% | +9.4% |
| 2025 | +81.6% | +94.5% |
| 2026 | +37.3% | +51.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AEIS and KLAC good diversifiers for each other?
Only partially. A correlation of 0.68 means AEIS and KLAC share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between AEIS and KLAC?
As of 2026-08-27, the correlation of weekly returns between AEIS and KLAC is 0.68 over 3 years, 0.72 over 1 year and 0.71 over 5 years.
Is KLAC a good diversifier for AEIS?
Only partially. A correlation of 0.68 means AEIS and KLAC share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.68 mean?
A reading of 0.68 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/aeis-vs-klac.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/aeis-vs-klac/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: AEIS correlations · KLAC correlations
