CMPS vs XBI: Correlation
How closely do COMPASS Pathways Plc - American Depository Shares (CMPS) and SPDR S&P Biotech ETF (XBI) trade together? Their weekly returns over three years give a correlation of 0.47, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CMPS and XBI?
Across a 3-year window, the weekly returns of CMPS and XBI correlate at 0.47, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.35 versus 0.47 over 3 years. Stretching to 5 years gives 0.51, with an annualized covariance of 1036.5 %².
In CMPS's tracked universe of 13 assets, XBI sits right near the top at #2. Correlation aside, the last 12 months split them widely, with CMPS ahead by 123.0 points (+210.2% versus +87.2%). Risk is not evenly split, since CMPS 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.
CMPS vs XBI: side by side
| CMPS (COMPASS Pathways Plc - American Depository Shares) | XBI (SPDR S&P Biotech ETF) | |
|---|---|---|
| 1-year return | +210.2% | +87.2% |
| 5-year return | -55.2% | +28.6% |
| Volatility (ann.) | 79.7% | 27.7% |
| Beta vs S&P 500 | 1.72 | 1.09 |
| Max drawdown (3Y) | -81.0% | -33.0% |
| Market cap | $2.0B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | ETF · Thematic |
Year-by-year returns
| Year | CMPS | XBI |
|---|---|---|
| 2022 | -63.7% | -25.9% |
| 2023 | +9.0% | +7.6% |
| 2024 | -56.8% | +1.0% |
| 2025 | +82.5% | +35.9% |
| 2026 | +112.2% | +38.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CMPS and XBI good diversifiers for each other?
Reasonably. At 0.47, CMPS and XBI keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between CMPS and XBI?
Using weekly returns as of 2026-08-27: 0.47 over 3 years, with 0.35 over the last year and 0.51 over 5 years.
Is XBI a good diversifier for CMPS?
Reasonably. At 0.47, CMPS and XBI keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.47 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/cmps-vs-xbi.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/cmps-vs-xbi/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CMPS correlations · XBI correlations
