KLAC vs ONTO: Correlation
KLA Corporation (KLAC) and Onto Innovation Inc. (ONTO) show a strong relationship: their 3-year correlation of weekly returns is 0.78.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are KLAC and ONTO?
On 3 years of weekly data the KLAC/ONTO correlation comes out at 0.78, strong. Little has changed lately, as the 1-year reading of 0.85 lands near the 3-year figure. The 5-year figure is 0.80, and annualized covariance runs at 2077.0 %².
By 3-year correlation, ONTO places #5 of the 40 assets tracked against KLAC. The last year tells two different stories: ONTO led by 63.1 percentage points, +107.9% for KLAC against +171.0% for ONTO.
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 ONTO: side by side
| KLAC (KLA Corporation) | ONTO (Onto Innovation Inc.) | |
|---|---|---|
| 1-year return | +107.9% | +171.0% |
| 5-year return | +463.9% | +288.7% |
| Volatility (ann.) | 45.6% | 58.7% |
| Beta vs S&P 500 | 1.84 | 2.32 |
| Max drawdown (3Y) | -43.6% | -62.8% |
| Market cap | $240.1B | $17.9B |
| P/E (trailing) | 50.2 | 110.0 |
| Dividend yield | 0.44% | 0.00% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | KLAC | ONTO |
|---|---|---|
| 2022 | -11.2% | -32.7% |
| 2023 | +56.0% | +124.6% |
| 2024 | +9.4% | +9.0% |
| 2025 | +94.5% | -5.3% |
| 2026 | +51.8% | +85.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are KLAC and ONTO good diversifiers for each other?
To a limited degree. At 0.78 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between KLAC and ONTO?
As of 2026-08-27, the correlation of weekly returns between KLAC and ONTO is 0.78 over 3 years, 0.85 over 1 year and 0.80 over 5 years.
Is ONTO a good diversifier for KLAC?
To a limited degree. At 0.78 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.78 mean?
A reading of 0.78 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/klac-vs-onto.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/klac-vs-onto/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: KLAC correlations · ONTO correlations
