BSTZ vs QQQ: Correlation
BlackRock Science and Technology Term Trust (BSTZ) and Invesco QQQ Trust (QQQ) show a strong relationship: their 3-year correlation of weekly returns is 0.75.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BSTZ and QQQ?
Over the past 3 years, BSTZ and QQQ moved with a correlation of 0.75, which is strong. Recent behaviour matches the longer record: 0.73 over 1 year against 0.75 over 3. Over 5 years the correlation is 0.79, and the annualized covariance of weekly returns is 350.2 %².
Within BSTZ's tracked universe of 21 assets, QQQ comes in at #6 by 3-year correlation. Correlation aside, the last 12 months split them widely, with BSTZ ahead by 31.1 points (+57.4% versus +26.3%).
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 QQQ: side by side
| BSTZ (BlackRock Science and Technology Term Trust) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +57.4% | +26.3% |
| 5-year return | +31.6% | +95.4% |
| Volatility (ann.) | 23.7% | 19.6% |
| Beta vs S&P 500 | 1.19 | 1.28 |
| Max drawdown (3Y) | -25.3% | -22.8% |
| Market cap | $2.1B | – |
| P/E (trailing) | 6.7 | – |
| Dividend yield | 0.00% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | US Listed | ETF · US Growth & Tech |
QQQ is a Large Growth fund from Invesco: $452.8B under management, 104 holdings, a 0.18% expense ratio, a 0.44% trailing dividend yield.
Year-by-year returns
| Year | BSTZ | QQQ |
|---|---|---|
| 2022 | -55.3% | -32.6% |
| 2023 | +18.7% | +54.9% |
| 2024 | +37.5% | +25.6% |
| 2025 | +25.1% | +20.8% |
| 2026 | +44.7% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BSTZ and QQQ good diversifiers for each other?
To a limited degree. At 0.75 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 BSTZ and QQQ?
The BSTZ/QQQ correlation stands at 0.75 on a 3-year window (1 year: 0.73, 5 years: 0.79), computed from weekly returns as of 2026-08-27.
Is QQQ a good diversifier for BSTZ?
To a limited degree. At 0.75 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 0.75 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/bstz-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bstz-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BSTZ correlations · QQQ correlations
