BYSI vs PHGE: Correlation
Measured on weekly returns over the past three years, BeyondSpring, Inc. (BYSI) and BiomX Inc. (PHGE) carry a correlation of 0.29, a weak link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BYSI and PHGE?
On 3 years of weekly data the BYSI/PHGE correlation comes out at 0.29, weak. The past 12 months show a weaker link (0.09) than the 3-year average (0.29). The 5-year figure is 0.18, and annualized covariance runs at 4291.1 %².
Within BYSI's tracked universe of 12 assets, PHGE comes in at #7 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months BYSI outperformed by 33.9 percentage points (-64.8% for BYSI against -98.7% for PHGE).
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.
BYSI vs PHGE: side by side
| BYSI (BeyondSpring, Inc.) | PHGE (BiomX Inc.) | |
|---|---|---|
| 1-year return | -64.8% | -98.7% |
| 5-year return | -97.7% | -100.0% |
| Volatility (ann.) | 101.3% | 147.0% |
| Beta vs S&P 500 | 0.29 | 0.33 |
| Max drawdown (3Y) | -82.4% | -99.9% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BYSI | PHGE |
|---|---|---|
| 2022 | -58.5% | -88.3% |
| 2023 | -52.1% | +49.7% |
| 2024 | +81.1% | -73.9% |
| 2025 | +0.0% | -86.5% |
| 2026 | -60.7% | -92.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BYSI and PHGE good diversifiers for each other?
Reasonably. At 0.29, BYSI and PHGE keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BYSI and PHGE?
Using weekly returns as of 2026-08-27: 0.29 over 3 years, with 0.09 over the last year and 0.18 over 5 years.
Is PHGE a good diversifier for BYSI?
Reasonably. At 0.29, BYSI and PHGE keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.29 mean?
On the −1 to +1 scale, 0.29 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/bysi-vs-phge.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bysi-vs-phge/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: BYSI correlations · PHGE correlations
