ABOS vs XBI: Correlation
Acumen Pharmaceuticals, Inc. (ABOS) and SPDR S&P Biotech ETF (XBI) show a moderate relationship: their 3-year correlation of weekly returns is 0.59.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ABOS and XBI?
Over the past 3 years, ABOS and XBI moved with a correlation of 0.59, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.47 versus 0.59 over 3 years. Over 5 years the correlation is 0.46, and the annualized covariance of weekly returns is 1355.4 %².
XBI is one of the assets that tracks ABOS most closely: it ranks #1 out of the 19 assets we track against ABOS. Correlation aside, the last 12 months split them widely, with ABOS ahead by 30.8 points (+118.0% versus +87.2%). One caveat on sizing: ABOS is 3.0 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.
ABOS vs XBI: side by side
| ABOS (Acumen Pharmaceuticals, Inc.) | XBI (SPDR S&P Biotech ETF) | |
|---|---|---|
| 1-year return | +118.0% | +87.2% |
| 5-year return | -83.9% | +28.6% |
| Volatility (ann.) | 82.5% | 27.7% |
| Beta vs S&P 500 | 2.30 | 1.09 |
| Max drawdown (3Y) | -85.8% | -33.0% |
| Market cap | $0.2B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | ETF · Thematic |
Year-by-year returns
| Year | ABOS | XBI |
|---|---|---|
| 2022 | -20.1% | -25.9% |
| 2023 | -28.9% | +7.6% |
| 2024 | -55.2% | +1.0% |
| 2025 | +22.7% | +35.9% |
| 2026 | +43.6% | +38.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ABOS and XBI good diversifiers for each other?
Somewhat, no more. With 0.59 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between ABOS and XBI?
As of 2026-08-27, the correlation of weekly returns between ABOS and XBI is 0.59 over 3 years, 0.47 over 1 year and 0.46 over 5 years.
Is XBI a good diversifier for ABOS?
Somewhat, no more. With 0.59 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.59 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.
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Related comparisons
Hubs: ABOS correlations · XBI correlations
