BST vs ELF: Correlation
Measured on weekly returns over the past three years, BlackRock Science and Technology Trust (BST) and e.l.f. Beauty, Inc. (ELF) carry a correlation of 0.44, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BST and ELF?
Across a 3-year window, the weekly returns of BST and ELF correlate at 0.44, moderate. The link has tightened recently: the 1-year correlation (0.54) runs above the 3-year figure (0.44). Stretching to 5 years gives 0.38, with an annualized covariance of 659.0 %².
Within BST's tracked universe of 25 assets, ELF comes in at #20 by 3-year correlation. The last year tells two different stories: BST led by 55.7 percentage points, +40.7% for BST against -15.0% for ELF. Risk is not evenly split, since ELF carries 3.0 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.
BST vs ELF: side by side
| BST (BlackRock Science and Technology Trust) | ELF (e.l.f. Beauty, Inc.) | |
|---|---|---|
| 1-year return | +40.7% | -15.0% |
| 5-year return | +46.7% | +244.4% |
| Volatility (ann.) | 22.2% | 67.7% |
| Beta vs S&P 500 | 1.27 | 2.00 |
| Max drawdown (3Y) | -23.4% | -77.3% |
| Market cap | – | $6.3B |
| P/E (trailing) | 6.9 | 108.3 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BST | ELF |
|---|---|---|
| 2022 | -38.3% | +66.5% |
| 2023 | +30.1% | +161.0% |
| 2024 | +18.0% | -13.0% |
| 2025 | +23.7% | -39.4% |
| 2026 | +30.9% | +39.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BST and ELF good diversifiers for each other?
A fair diversifier. At 0.44, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between BST and ELF?
As of 2026-08-27, the correlation of weekly returns between BST and ELF is 0.44 over 3 years, 0.54 over 1 year and 0.38 over 5 years.
Is ELF a good diversifier for BST?
A fair diversifier. At 0.44, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.44 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-elf.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bst-vs-elf/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BST correlations · ELF correlations
