KLAC vs MPWR: Correlation
How closely do KLA Corporation (KLAC) and Monolithic Power Systems (MPWR) trade together? Their weekly returns over three years give a correlation of 0.63, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are KLAC and MPWR?
Over the past 3 years, KLAC and MPWR moved with a correlation of 0.63, which is strong. Lately the two have drifted apart, with the 1-year correlation at 0.52 versus 0.63 over 3 years. Over 5 years the correlation is 0.68, and the annualized covariance of weekly returns is 1390.0 %².
Among the 40 assets we track against KLAC, MPWR ranks #23 by 3-year correlation. The last year tells two different stories: KLAC led by 55.5 percentage points, +107.9% for KLAC against +52.4% for MPWR. Across three years, the rolling one-year figure varied moderately, from 0.50 to 0.81.
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 MPWR: side by side
| KLAC (KLA Corporation) | MPWR (Monolithic Power Systems) | |
|---|---|---|
| 1-year return | +107.9% | +52.4% |
| 5-year return | +463.9% | +170.3% |
| Volatility (ann.) | 45.6% | 48.1% |
| Beta vs S&P 500 | 1.84 | 2.22 |
| Max drawdown (3Y) | -43.6% | -51.6% |
| Market cap | $240.1B | $64.4B |
| P/E (trailing) | 50.2 | 79.4 |
| Dividend yield | 0.44% | 0.55% |
| Sector / category | Information Technology | Information Technology |
Year-by-year returns
| Year | KLAC | MPWR |
|---|---|---|
| 2022 | -11.2% | -27.8% |
| 2023 | +56.0% | +79.8% |
| 2024 | +9.4% | -5.6% |
| 2025 | +94.5% | +54.5% |
| 2026 | +51.8% | +45.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are KLAC and MPWR good diversifiers for each other?
Somewhat, no more. With 0.63 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between KLAC and MPWR?
Using weekly returns as of 2026-08-27: 0.63 over 3 years, with 0.52 over the last year and 0.68 over 5 years.
Is MPWR a good diversifier for KLAC?
Somewhat, no more. With 0.63 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.63 mean?
A reading of 0.63 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: KLAC correlations · MPWR correlations
