BTX vs WDC: Correlation
How closely do BlackRock Technology and Private Equity Term Trust (BTX) and Western Digital (WDC) trade together? Their weekly returns over three years give a correlation of 0.59, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BTX and WDC?
Across a 3-year window, the weekly returns of BTX and WDC correlate at 0.59, moderate. The relationship has been stable: the 1-year correlation (0.54) sits close to the 3-year figure. Stretching to 5 years gives 0.53, with an annualized covariance of 838.2 %².
By 3-year correlation, WDC places #9 of the 20 assets tracked against BTX. Correlation aside, the last 12 months split them widely, with WDC ahead by 434.8 points (+39.5% versus +474.3%). Risk is not evenly split, since WDC carries 2.4 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.
BTX vs WDC: side by side
| BTX (BlackRock Technology and Private Equity Term Trust) | WDC (Western Digital) | |
|---|---|---|
| 1-year return | +39.5% | +474.3% |
| 5-year return | -21.7% | +889.2% |
| Volatility (ann.) | 24.4% | 58.0% |
| Beta vs S&P 500 | 1.23 | 2.15 |
| Max drawdown (3Y) | -31.7% | -49.6% |
| Market cap | $1.1B | $166.6B |
| P/E (trailing) | 23.8 | 17.4 |
| Dividend yield | 0.00% | 0.11% |
| Sector / category | US Listed | Information Technology |
Year-by-year returns
| Year | BTX | WDC |
|---|---|---|
| 2022 | -47.8% | -51.6% |
| 2023 | +19.3% | +66.0% |
| 2024 | +13.4% | +13.9% |
| 2025 | +0.9% | +283.7% |
| 2026 | +45.3% | +168.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BTX and WDC good diversifiers for each other?
To a limited degree. At 0.59 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between BTX and WDC?
As of 2026-08-27, the correlation of weekly returns between BTX and WDC is 0.59 over 3 years, 0.54 over 1 year and 0.53 over 5 years.
Is WDC a good diversifier for BTX?
To a limited degree. At 0.59 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.59 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/btx-vs-wdc.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/btx-vs-wdc/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BTX correlations · WDC correlations
