BSTZ vs BTX: Correlation
How closely do BlackRock Science and Technology Term Trust (BSTZ) and BlackRock Technology and Private Equity Term Trust (BTX) trade together? Their weekly returns over three years give a correlation of 0.80, which is very strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BSTZ and BTX?
Across a 3-year window, the weekly returns of BSTZ and BTX correlate at 0.80, very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.77 lands near the 3-year figure. Stretching to 5 years gives 0.82, with an annualized covariance of 461.4 %².
BTX is one of the assets that tracks BSTZ most closely: it ranks #2 out of the 21 assets we track against BSTZ. The last year tells two different stories: BSTZ led by 17.9 percentage points, +57.4% for BSTZ against +39.5% for BTX.
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.
BSTZ vs BTX: side by side
| BSTZ (BlackRock Science and Technology Term Trust) | BTX (BlackRock Technology and Private Equity Term Trust) | |
|---|---|---|
| 1-year return | +57.4% | +39.5% |
| 5-year return | +31.6% | -21.7% |
| Volatility (ann.) | 23.7% | 24.4% |
| Beta vs S&P 500 | 1.19 | 1.23 |
| Max drawdown (3Y) | -25.3% | -31.7% |
| Market cap | $2.1B | $1.1B |
| P/E (trailing) | 6.7 | 23.8 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BSTZ | BTX |
|---|---|---|
| 2022 | -55.3% | -47.8% |
| 2023 | +18.7% | +19.3% |
| 2024 | +37.5% | +13.4% |
| 2025 | +25.1% | +0.9% |
| 2026 | +44.7% | +45.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BSTZ and BTX good diversifiers for each other?
Not really. At 0.80, the two trade almost as one position, and owning both buys little extra protection.
FAQ
What is the correlation between BSTZ and BTX?
Using weekly returns as of 2026-08-27: 0.80 over 3 years, with 0.77 over the last year and 0.82 over 5 years.
Is BTX a good diversifier for BSTZ?
Not really. At 0.80, the two trade almost as one position, and owning both buys little extra protection.
What does a correlation of 0.80 mean?
A reading of 0.80 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/bstz-vs-btx.json
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[](https://www.pairbook.io/pair/bstz-vs-btx/)
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Related comparisons
Hubs: BSTZ correlations · BTX correlations
