BST vs QQQ: Correlation
BlackRock Science and Technology Trust (BST) and Invesco QQQ Trust (QQQ) show a very strong relationship: their 3-year correlation of weekly returns is 0.86.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BST and QQQ?
On 3 years of weekly data the BST/QQQ correlation comes out at 0.86, very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.84 lands near the 3-year figure. The 5-year figure is 0.87, and annualized covariance runs at 374.2 %².
QQQ is one of the assets that tracks BST most closely: it ranks #1 out of the 25 assets we track against BST. The trailing year gives BST the advantage: +40.7% versus +26.3%, a 14.4-point spread.
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.
BST vs QQQ: side by side
| BST (BlackRock Science and Technology Trust) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +40.7% | +26.3% |
| 5-year return | +46.7% | +95.4% |
| Volatility (ann.) | 22.2% | 19.6% |
| Beta vs S&P 500 | 1.27 | 1.28 |
| Max drawdown (3Y) | -23.4% | -22.8% |
| Market cap | – | – |
| P/E (trailing) | 6.9 | – |
| 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 | BST | QQQ |
|---|---|---|
| 2022 | -38.3% | -32.6% |
| 2023 | +30.1% | +54.9% |
| 2024 | +18.0% | +25.6% |
| 2025 | +23.7% | +20.8% |
| 2026 | +30.9% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BST and QQQ good diversifiers for each other?
No. With a correlation of 0.86, BST and QQQ move nearly in lockstep, so holding both adds very little diversification.
FAQ
What is the correlation between BST and QQQ?
As of 2026-08-27, the correlation of weekly returns between BST and QQQ is 0.86 over 3 years, 0.84 over 1 year and 0.87 over 5 years.
Is QQQ a good diversifier for BST?
No. With a correlation of 0.86, BST and QQQ move nearly in lockstep, so holding both adds very little diversification.
What does a correlation of 0.86 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/bst-vs-qqq.json
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Related comparisons
Hubs: BST correlations · QQQ correlations
