WDC vs YJ: Correlation
Western Digital (WDC) and Yunji Inc. - American Depository Shares (YJ) show a negative relationship: their 3-year correlation of weekly returns is -0.23.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are WDC and YJ?
On 3 years of weekly data the WDC/YJ correlation comes out at -0.23, negative, meaning they tend to move in opposite directions. Lately the two have drifted apart, with the 1-year correlation at -0.39 versus -0.23 over 3 years. The 5-year figure is -0.14, and annualized covariance runs at -1854.4 %².
Among the 33 assets we track against WDC, YJ ranks #26 by 3-year correlation. Correlation aside, the last 12 months split them widely, with WDC ahead by 391.0 points (+474.3% versus +83.3%). Note the risk asymmetry: YJ runs 2.4 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
WDC vs YJ: side by side
| WDC (Western Digital) | YJ (Yunji Inc. - American Depository Shares) | |
|---|---|---|
| 1-year return | +474.3% | +83.3% |
| 5-year return | +889.2% | -89.8% |
| Volatility (ann.) | 58.0% | 139.4% |
| Beta vs S&P 500 | 2.15 | 0.56 |
| Max drawdown (3Y) | -49.6% | -73.6% |
| Market cap | $166.6B | – |
| P/E (trailing) | 17.4 | 1.5 |
| Dividend yield | 0.11% | 0.00% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | WDC | YJ |
|---|---|---|
| 2022 | -51.6% | +30.7% |
| 2023 | +66.0% | -91.3% |
| 2024 | +13.9% | -43.4% |
| 2025 | +283.7% | -26.7% |
| 2026 | +168.4% | +170.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are WDC and YJ good diversifiers for each other?
By historical standards, yes. A correlation of -0.23 means the two rarely move for the same reasons.
FAQ
What is the correlation between WDC and YJ?
The WDC/YJ correlation stands at -0.23 on a 3-year window (1 year: -0.39, 5 years: -0.14), computed from weekly returns as of 2026-08-27.
Is YJ a good diversifier for WDC?
By historical standards, yes. A correlation of -0.23 means the two rarely move for the same reasons.
What does a correlation of -0.23 mean?
On the −1 to +1 scale, -0.23 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/wdc-vs-yj.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/wdc-vs-yj/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: WDC correlations · YJ correlations
