BSX vs USA: Correlation
How closely do Boston Scientific (BSX) and Liberty All-Star Equity Fund (USA) trade together? Their weekly returns over three years give a correlation of 0.43, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BSX and USA?
Across a 3-year window, the weekly returns of BSX and USA correlate at 0.43, moderate. The link has loosened recently: the 1-year correlation (0.28) runs below the 3-year figure (0.43). Stretching to 5 years gives 0.47, with an annualized covariance of 179.0 %².
Among the 33 assets we track against BSX, USA ranks #9 by 3-year correlation. The last year tells two different stories: USA led by 57.5 percentage points, -55.9% for BSX against +1.6% for USA. One caveat on sizing: BSX is 1.8 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
BSX vs USA: side by side
| BSX (Boston Scientific) | USA (Liberty All-Star Equity Fund) | |
|---|---|---|
| 1-year return | -55.9% | +1.6% |
| 5-year return | +4.1% | +18.1% |
| Volatility (ann.) | 27.6% | 15.2% |
| Beta vs S&P 500 | 0.72 | 0.89 |
| Max drawdown (3Y) | -60.6% | -17.7% |
| Market cap | $67.6B | – |
| P/E (trailing) | 19.5 | 10.7 |
| Dividend yield | 0.00% | 11.19% |
| Sector / category | Health Care | US Listed |
Year-by-year returns
| Year | BSX | USA |
|---|---|---|
| 2022 | +8.9% | -25.2% |
| 2023 | +24.9% | +23.2% |
| 2024 | +54.5% | +20.8% |
| 2025 | +6.8% | +0.1% |
| 2026 | -51.1% | +3.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BSX and USA good diversifiers for each other?
Reasonably. At 0.43, BSX and USA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BSX and USA?
The BSX/USA correlation stands at 0.43 on a 3-year window (1 year: 0.28, 5 years: 0.47), computed from weekly returns as of 2026-08-27.
Is USA a good diversifier for BSX?
Reasonably. At 0.43, BSX and USA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.43 mean?
On the −1 to +1 scale, 0.43 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
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Related comparisons
Hubs: BSX correlations · USA correlations
