MKSI vs WDC: Correlation
Measured on weekly returns over the past three years, MKS Inc. (MKSI) and Western Digital (WDC) carry a correlation of 0.67, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MKSI and WDC?
Across a 3-year window, the weekly returns of MKSI and WDC correlate at 0.67, strong. Recent behaviour matches the longer record: 0.66 over 1 year against 0.67 over 3. Stretching to 5 years gives 0.66, with an annualized covariance of 1990.4 %².
Among the 41 assets we track against MKSI, WDC ranks #18 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months WDC outperformed by 316.8 percentage points (+157.5% for MKSI against +474.3% for WDC).
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.
MKSI vs WDC: side by side
| MKSI (MKS Inc.) | WDC (Western Digital) | |
|---|---|---|
| 1-year return | +157.5% | +474.3% |
| 5-year return | +88.2% | +889.2% |
| Volatility (ann.) | 50.8% | 58.0% |
| Beta vs S&P 500 | 2.39 | 2.15 |
| Max drawdown (3Y) | -59.1% | -49.6% |
| Market cap | $18.3B | $166.6B |
| P/E (trailing) | 43.3 | 17.4 |
| Dividend yield | 0.35% | 0.11% |
| Sector / category | US Listed | Information Technology |
Year-by-year returns
| Year | MKSI | WDC |
|---|---|---|
| 2022 | -51.0% | -51.6% |
| 2023 | +22.6% | +66.0% |
| 2024 | +2.2% | +13.9% |
| 2025 | +54.4% | +283.7% |
| 2026 | +70.0% | +168.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MKSI and WDC good diversifiers for each other?
Somewhat, no more. With 0.67 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between MKSI and WDC?
Using weekly returns as of 2026-08-27: 0.67 over 3 years, with 0.66 over the last year and 0.66 over 5 years.
Is WDC a good diversifier for MKSI?
Somewhat, no more. With 0.67 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.67 mean?
On the −1 to +1 scale, 0.67 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/mksi-vs-wdc.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/mksi-vs-wdc/)
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Related comparisons
Hubs: MKSI correlations · WDC correlations
