LRCX vs STX: Correlation
Measured on weekly returns over the past three years, Lam Research (LRCX) and Seagate Technology (STX) carry a correlation of 0.58, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are LRCX and STX?
Across a 3-year window, the weekly returns of LRCX and STX correlate at 0.58, moderate. Little has changed lately, as the 1-year reading of 0.61 lands near the 3-year figure. Stretching to 5 years gives 0.58, with an annualized covariance of 1398.3 %².
Among the 36 assets we track against LRCX, STX ranks #23 by 3-year correlation. The last year tells two different stories: STX led by 201.8 percentage points, +209.0% for LRCX against +410.8% for STX. Across three years, the rolling one-year figure varied moderately, from 0.37 to 0.70.
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 STX: side by side
| LRCX (Lam Research) | STX (Seagate Technology) | |
|---|---|---|
| 1-year return | +209.0% | +410.8% |
| 5-year return | +452.0% | +1032.5% |
| Volatility (ann.) | 46.7% | 51.3% |
| Beta vs S&P 500 | 2.03 | 1.97 |
| Max drawdown (3Y) | -47.1% | -40.0% |
| Market cap | $398.6B | $192.0B |
| P/E (trailing) | 54.4 | 61.0 |
| Dividend yield | 0.33% | 0.35% |
| Sector / category | Information Technology | Information Technology |
Year-by-year returns
| Year | LRCX | STX |
|---|---|---|
| 2022 | -40.7% | -51.4% |
| 2023 | +88.6% | +69.1% |
| 2024 | -6.8% | +4.1% |
| 2025 | +139.2% | +225.3% |
| 2026 | +86.5% | +208.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are LRCX and STX good diversifiers for each other?
Somewhat, no more. With 0.58 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between LRCX and STX?
As of 2026-08-27, the correlation of weekly returns between LRCX and STX is 0.58 over 3 years, 0.61 over 1 year and 0.58 over 5 years.
Is STX a good diversifier for LRCX?
Somewhat, no more. With 0.58 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.58 mean?
On the −1 to +1 scale, 0.58 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-stx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/lrcx-vs-stx/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: LRCX correlations · STX correlations
