AMLX vs BYSI: Correlation
Measured on weekly returns over the past three years, Amylyx Pharmaceuticals, Inc. (AMLX) and BeyondSpring, Inc. (BYSI) carry a correlation of -0.27, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AMLX and BYSI?
On 3 years of weekly data the AMLX/BYSI correlation comes out at -0.27, negative, meaning they tend to move in opposite directions. The link has tightened recently: the 1-year correlation (-0.12) runs above the 3-year figure (-0.27). The 5-year figure is -0.09, and annualized covariance runs at -2703.9 %².
Among the 17 assets we track against AMLX, BYSI sits near the bottom by co-movement, at rank #15. Their recent paths diverged sharply: over the last 12 months AMLX outperformed by 358.2 percentage points (+293.4% for AMLX against -64.8% for BYSI).
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.
AMLX vs BYSI: side by side
| AMLX (Amylyx Pharmaceuticals, Inc.) | BYSI (BeyondSpring, Inc.) | |
|---|---|---|
| 1-year return | +293.4% | -64.8% |
| 5-year return | +105.8% | -97.7% |
| Volatility (ann.) | 97.8% | 101.3% |
| Beta vs S&P 500 | 1.29 | 0.29 |
| Max drawdown (3Y) | -92.6% | -82.4% |
| Market cap | $4.1B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | AMLX | BYSI |
|---|---|---|
| 2022 | – | -58.5% |
| 2023 | -60.2% | -52.1% |
| 2024 | -74.3% | +81.1% |
| 2025 | +219.6% | +0.0% |
| 2026 | +207.8% | -60.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AMLX and BYSI good diversifiers for each other?
By historical standards, yes. A correlation of -0.27 means the two rarely move for the same reasons.
FAQ
What is the correlation between AMLX and BYSI?
Using weekly returns as of 2026-08-27: -0.27 over 3 years, with -0.12 over the last year and -0.09 over 5 years.
Is BYSI a good diversifier for AMLX?
By historical standards, yes. A correlation of -0.27 means the two rarely move for the same reasons.
What does a correlation of -0.27 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/amlx-vs-bysi.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/amlx-vs-bysi/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: AMLX correlations · BYSI correlations
