FDS vs WDC: Correlation
How closely do FactSet (FDS) and Western Digital (WDC) trade together? Their weekly returns over three years give a correlation of -0.21, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FDS and WDC?
Across a 3-year window, the weekly returns of FDS and WDC correlate at -0.21, negative, meaning they tend to move in opposite directions. The link has loosened recently: the 1-year correlation (-0.44) runs below the 3-year figure (-0.21). Stretching to 5 years gives -0.06, with an annualized covariance of -397.4 %².
Among the 32 assets we track against FDS, WDC sits near the bottom by co-movement, at rank #28. Correlation aside, the last 12 months split them widely, with WDC ahead by 492.9 points (-18.6% versus +474.3%). The relationship is regime-dependent: the rolling one-year correlation swung between -0.43 and 0.43 over the past three years, so this pair behaves very differently depending on the market environment. Risk is not evenly split, since WDC carries 1.8 times the volatility of the other side.
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.
FDS vs WDC: side by side
| FDS (FactSet) | WDC (Western Digital) | |
|---|---|---|
| 1-year return | -18.6% | +474.3% |
| 5-year return | -15.8% | +889.2% |
| Volatility (ann.) | 31.9% | 58.0% |
| Beta vs S&P 500 | 0.56 | 2.15 |
| Max drawdown (3Y) | -61.1% | -49.6% |
| Market cap | $10.8B | $166.6B |
| P/E (trailing) | 19.5 | 17.4 |
| Dividend yield | 1.51% | 0.11% |
| Sector / category | Financials | Information Technology |
Year-by-year returns
| Year | FDS | WDC |
|---|---|---|
| 2022 | -16.7% | -51.6% |
| 2023 | +20.0% | +66.0% |
| 2024 | +1.6% | +13.9% |
| 2025 | -38.9% | +283.7% |
| 2026 | +6.0% | +168.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FDS and WDC good diversifiers for each other?
By historical standards, yes. A correlation of -0.21 means the two rarely move for the same reasons.
FAQ
What is the correlation between FDS and WDC?
The FDS/WDC correlation stands at -0.21 on a 3-year window (1 year: -0.44, 5 years: -0.06), computed from weekly returns as of 2026-08-27.
Is WDC a good diversifier for FDS?
By historical standards, yes. A correlation of -0.21 means the two rarely move for the same reasons.
What does a correlation of -0.21 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/fds-vs-wdc.json
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Related comparisons
Hubs: FDS correlations · WDC correlations
