BST vs SMCI: Correlation
How closely do BlackRock Science and Technology Trust (BST) and Supermicro (SMCI) trade together? Their weekly returns over three years give a correlation of 0.46, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BST and SMCI?
Over the past 3 years, BST and SMCI moved with a correlation of 0.46, which is moderate. Little has changed lately, as the 1-year reading of 0.48 lands near the 3-year figure. Over 5 years the correlation is 0.40, and the annualized covariance of weekly returns is 1100.3 %².
Among the 25 assets we track against BST, SMCI ranks #19 by 3-year correlation. The last year tells two different stories: BST led by 54.8 percentage points, +40.7% for BST against -14.1% for SMCI. Note the risk asymmetry: SMCI runs 4.8 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.
BST vs SMCI: side by side
| BST (BlackRock Science and Technology Trust) | SMCI (Supermicro) | |
|---|---|---|
| 1-year return | +40.7% | -14.1% |
| 5-year return | +46.7% | +983.4% |
| Volatility (ann.) | 22.2% | 107.1% |
| Beta vs S&P 500 | 1.27 | 3.08 |
| Max drawdown (3Y) | -23.4% | -84.8% |
| Market cap | – | $24.9B |
| P/E (trailing) | 6.9 | 11.5 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | Information Technology |
Year-by-year returns
| Year | BST | SMCI |
|---|---|---|
| 2022 | -38.3% | +86.8% |
| 2023 | +30.1% | +246.2% |
| 2024 | +18.0% | +7.2% |
| 2025 | +23.7% | -4.0% |
| 2026 | +30.9% | +31.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BST and SMCI good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.46 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between BST and SMCI?
Using weekly returns as of 2026-08-27: 0.46 over 3 years, with 0.48 over the last year and 0.40 over 5 years.
Is SMCI a good diversifier for BST?
Yes, to a useful degree: a correlation of 0.46 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.46 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-smci.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/bst-vs-smci/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BST correlations · SMCI correlations
