BME vs BMRN: Correlation
How closely do Blackrock Health Sciences Trust (BME) and BioMarin Pharmaceutical Inc. (BMRN) trade together? Their weekly returns over three years give a correlation of 0.38, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BME and BMRN?
Across a 3-year window, the weekly returns of BME and BMRN correlate at 0.38, moderate. The relationship has been stable: the 1-year correlation (0.46) sits close to the 3-year figure. Stretching to 5 years gives 0.36, with an annualized covariance of 154.7 %².
Among the 34 assets we track against BME, BMRN sits near the bottom by co-movement, at rank #30. Their recent paths diverged sharply: over the last 12 months BME outperformed by 24.7 percentage points (+36.0% for BME against +11.3% for BMRN). One caveat on sizing: BMRN is 2.0 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.
BME vs BMRN: side by side
| BME (Blackrock Health Sciences Trust) | BMRN (BioMarin Pharmaceutical Inc.) | |
|---|---|---|
| 1-year return | +36.0% | +11.3% |
| 5-year return | +33.5% | -21.6% |
| Volatility (ann.) | 14.4% | 28.1% |
| Beta vs S&P 500 | 0.45 | 0.46 |
| Max drawdown (3Y) | -14.4% | -49.8% |
| Market cap | – | $12.6B |
| P/E (trailing) | 7.8 | 176.5 |
| Dividend yield | 6.80% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BME | BMRN |
|---|---|---|
| 2022 | -4.6% | +17.1% |
| 2023 | -1.1% | -6.8% |
| 2024 | -0.1% | -31.8% |
| 2025 | +17.9% | -9.6% |
| 2026 | +17.9% | +9.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BME and BMRN good diversifiers for each other?
Reasonably. At 0.38, BME and BMRN keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BME and BMRN?
Using weekly returns as of 2026-08-27: 0.38 over 3 years, with 0.46 over the last year and 0.36 over 5 years.
Is BMRN a good diversifier for BME?
Reasonably. At 0.38, BME and BMRN keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.38 mean?
A reading of 0.38 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/bme-vs-bmrn.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bme-vs-bmrn/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BME correlations · BMRN correlations
