FORM vs KLAC: Correlation
Measured on weekly returns over the past three years, FormFactor, Inc. (FORM) and KLA Corporation (KLAC) carry a correlation of 0.69, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FORM and KLAC?
On 3 years of weekly data the FORM/KLAC correlation comes out at 0.69, strong. Little has changed lately, as the 1-year reading of 0.68 lands near the 3-year figure. The 5-year figure is 0.66, and annualized covariance runs at 1838.4 %².
By 3-year correlation, KLAC places #4 of the 14 assets tracked against FORM. Their recent paths diverged sharply: over the last 12 months FORM outperformed by 168.7 percentage points (+276.6% for FORM 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.
FORM vs KLAC: side by side
| FORM (FormFactor, Inc.) | KLAC (KLA Corporation) | |
|---|---|---|
| 1-year return | +276.6% | +107.9% |
| 5-year return | +178.6% | +463.9% |
| Volatility (ann.) | 58.1% | 45.6% |
| Beta vs S&P 500 | 2.08 | 1.84 |
| Max drawdown (3Y) | -62.7% | -43.6% |
| Market cap | $8.6B | $240.1B |
| P/E (trailing) | 74.5 | 50.2 |
| Dividend yield | 0.00% | 0.44% |
| Sector / category | US Listed | Information Technology |
Year-by-year returns
| Year | FORM | KLAC |
|---|---|---|
| 2022 | -51.4% | -11.2% |
| 2023 | +87.6% | +56.0% |
| 2024 | +5.5% | +9.4% |
| 2025 | +26.8% | +94.5% |
| 2026 | +97.6% | +51.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FORM and KLAC good diversifiers for each other?
To a limited degree. At 0.69 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 FORM and KLAC?
The FORM/KLAC correlation stands at 0.69 on a 3-year window (1 year: 0.68, 5 years: 0.66), computed from weekly returns as of 2026-08-27.
Is KLAC a good diversifier for FORM?
To a limited degree. At 0.69 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 0.69 mean?
A reading of 0.69 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/form-vs-klac.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/form-vs-klac/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: FORM correlations · KLAC correlations
