BMEZ vs OSUR: Correlation
Measured on weekly returns over the past three years, BlackRock Health Sciences Term Trust (BMEZ) and OraSure Technologies, Inc. (OSUR) 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 BMEZ and OSUR?
On 3 years of weekly data the BMEZ/OSUR correlation comes out at 0.44, moderate. Little has changed lately, as the 1-year reading of 0.41 lands near the 3-year figure. The 5-year figure is 0.33, and annualized covariance runs at 295.7 %².
By 3-year correlation, OSUR places #13 of the 23 assets tracked against BMEZ. Their recent paths diverged sharply: over the last 12 months BMEZ outperformed by 20.9 percentage points (+31.4% for BMEZ against +10.5% for OSUR). Note the risk asymmetry: OSUR runs 2.5 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.
BMEZ vs OSUR: side by side
| BMEZ (BlackRock Health Sciences Term Trust) | OSUR (OraSure Technologies, Inc.) | |
|---|---|---|
| 1-year return | +31.4% | +10.5% |
| 5-year return | +0.9% | -66.1% |
| Volatility (ann.) | 16.5% | 40.8% |
| Beta vs S&P 500 | 0.63 | 0.83 |
| Max drawdown (3Y) | -18.3% | -74.7% |
| Market cap | $1.1B | $0.3B |
| P/E (trailing) | 6.7 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BMEZ | OSUR |
|---|---|---|
| 2022 | -32.7% | -44.5% |
| 2023 | +5.1% | +70.1% |
| 2024 | +9.5% | -56.0% |
| 2025 | +18.7% | -33.0% |
| 2026 | +20.6% | +52.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BMEZ and OSUR good diversifiers for each other?
Reasonably. At 0.44, BMEZ and OSUR keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BMEZ and OSUR?
The BMEZ/OSUR correlation stands at 0.44 on a 3-year window (1 year: 0.41, 5 years: 0.33), computed from weekly returns as of 2026-08-27.
Is OSUR a good diversifier for BMEZ?
Reasonably. At 0.44, BMEZ and OSUR keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
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/bmez-vs-osur.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bmez-vs-osur/)
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Related comparisons
Hubs: BMEZ correlations · OSUR correlations
