ALNY vs BMEZ: Correlation
How closely do Alnylam Pharmaceuticals, Inc. (ALNY) and BlackRock Health Sciences Term Trust (BMEZ) trade together? Their weekly returns over three years give a correlation of 0.39, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ALNY and BMEZ?
On 3 years of weekly data the ALNY/BMEZ correlation comes out at 0.39, moderate. The relationship has been stable: the 1-year correlation (0.34) sits close to the 3-year figure. The 5-year figure is 0.41, and annualized covariance runs at 312.7 %².
By 3-year correlation, BMEZ places #4 of the 11 assets tracked against ALNY. Correlation aside, the last 12 months split them widely, with BMEZ ahead by 79.3 points (-47.9% versus +31.4%). Risk is not evenly split, since ALNY carries 2.9 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.
ALNY vs BMEZ: side by side
| ALNY (Alnylam Pharmaceuticals, Inc.) | BMEZ (BlackRock Health Sciences Term Trust) | |
|---|---|---|
| 1-year return | -47.9% | +31.4% |
| 5-year return | +16.2% | +0.9% |
| Volatility (ann.) | 48.5% | 16.5% |
| Beta vs S&P 500 | 0.93 | 0.63 |
| Max drawdown (3Y) | -58.2% | -18.3% |
| Market cap | $31.7B | $1.1B |
| P/E (trailing) | 41.6 | 6.7 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ALNY | BMEZ |
|---|---|---|
| 2022 | +40.1% | -32.7% |
| 2023 | -19.5% | +5.1% |
| 2024 | +22.9% | +9.5% |
| 2025 | +69.0% | +18.7% |
| 2026 | -40.5% | +20.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ALNY and BMEZ good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.39 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between ALNY and BMEZ?
As of 2026-08-27, the correlation of weekly returns between ALNY and BMEZ is 0.39 over 3 years, 0.34 over 1 year and 0.41 over 5 years.
Is BMEZ a good diversifier for ALNY?
Yes, to a useful degree: a correlation of 0.39 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.39 mean?
On the −1 to +1 scale, 0.39 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/alny-vs-bmez.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/alny-vs-bmez/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ALNY correlations · BMEZ correlations
