ATRA vs CRBU: Correlation
Measured on weekly returns over the past three years, Atara Biotherapeutics, Inc. (ATRA) and Caribou Biosciences, Inc. (CRBU) carry a correlation of 0.42, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ATRA and CRBU?
On 3 years of weekly data the ATRA/CRBU correlation comes out at 0.42, moderate. The relationship has been stable: the 1-year correlation (0.33) sits close to the 3-year figure. The 5-year figure is 0.37, and annualized covariance runs at 5134.5 %².
Few assets follow ATRA as closely as CRBU, which ranks #1 of 13 tracked partners. The trailing year gives CRBU the advantage: -25.1% versus -16.2%, a 8.9-point spread. Risk is not evenly split, since ATRA carries 1.9 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.
ATRA vs CRBU: side by side
| ATRA (Atara Biotherapeutics, Inc.) | CRBU (Caribou Biosciences, Inc.) | |
|---|---|---|
| 1-year return | -25.1% | -16.2% |
| 5-year return | -97.5% | -93.2% |
| Volatility (ann.) | 153.2% | 80.5% |
| Beta vs S&P 500 | 1.17 | 2.52 |
| Max drawdown (3Y) | -90.7% | -91.1% |
| Market cap | $0.1B | $0.2B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ATRA | CRBU |
|---|---|---|
| 2022 | -79.2% | -58.4% |
| 2023 | -84.4% | -8.8% |
| 2024 | +3.8% | -72.3% |
| 2025 | +35.9% | +0.0% |
| 2026 | -48.9% | +4.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ATRA and CRBU good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.42 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between ATRA and CRBU?
As of 2026-08-27, the correlation of weekly returns between ATRA and CRBU is 0.42 over 3 years, 0.33 over 1 year and 0.37 over 5 years.
Is CRBU a good diversifier for ATRA?
Yes, to a useful degree: a correlation of 0.42 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.42 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: ATRA correlations · CRBU correlations
