LRCX vs WDC: Correlation
Measured on weekly returns over the past three years, Lam Research (LRCX) and Western Digital (WDC) carry a correlation of 0.64, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are LRCX and WDC?
On 3 years of weekly data the LRCX/WDC correlation comes out at 0.64, strong. Recent behaviour matches the longer record: 0.58 over 1 year against 0.64 over 3. The 5-year figure is 0.64, and annualized covariance runs at 1739.9 %².
Among the 36 assets we track against LRCX, WDC ranks #18 by 3-year correlation. The last year tells two different stories: WDC led by 265.3 percentage points, +209.0% for LRCX against +474.3% for WDC. Stability stands out here, with the rolling one-year correlation confined to 0.57 through 0.78.
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.
LRCX vs WDC: side by side
| LRCX (Lam Research) | WDC (Western Digital) | |
|---|---|---|
| 1-year return | +209.0% | +474.3% |
| 5-year return | +452.0% | +889.2% |
| Volatility (ann.) | 46.7% | 58.0% |
| Beta vs S&P 500 | 2.03 | 2.15 |
| Max drawdown (3Y) | -47.1% | -49.6% |
| Market cap | $398.6B | $166.6B |
| P/E (trailing) | 54.4 | 17.4 |
| Dividend yield | 0.33% | 0.11% |
| Sector / category | Information Technology | Information Technology |
Year-by-year returns
| Year | LRCX | WDC |
|---|---|---|
| 2022 | -40.7% | -51.6% |
| 2023 | +88.6% | +66.0% |
| 2024 | -6.8% | +13.9% |
| 2025 | +139.2% | +283.7% |
| 2026 | +86.5% | +168.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are LRCX and WDC good diversifiers for each other?
Somewhat, no more. With 0.64 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between LRCX and WDC?
As of 2026-08-27, the correlation of weekly returns between LRCX and WDC is 0.64 over 3 years, 0.58 over 1 year and 0.64 over 5 years.
Is WDC a good diversifier for LRCX?
Somewhat, no more. With 0.64 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.64 mean?
On the −1 to +1 scale, 0.64 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/lrcx-vs-wdc.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/lrcx-vs-wdc/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: LRCX correlations · WDC correlations
