KRRO vs RNTX: Correlation
Korro Bio, Inc. (KRRO) and Rein Therapeutics, Inc. (RNTX) show a moderate relationship: their 3-year correlation of weekly returns is 0.37.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are KRRO and RNTX?
On 3 years of weekly data the KRRO/RNTX correlation comes out at 0.37, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.23 versus 0.37 over 3 years. The 5-year figure is 0.25, and annualized covariance runs at 6073.4 %².
Among the 16 assets we track against KRRO, RNTX ranks #7 by 3-year correlation. The trailing year gives RNTX the advantage: -38.6% versus -28.8%, a 9.8-point spread. One caveat on sizing: KRRO is 1.7 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.
KRRO vs RNTX: side by side
| KRRO (Korro Bio, Inc.) | RNTX (Rein Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | -38.6% | -28.8% |
| 5-year return | -96.6% | -96.4% |
| Volatility (ann.) | 166.3% | 98.8% |
| Beta vs S&P 500 | 3.17 | 1.78 |
| Max drawdown (3Y) | -94.1% | -89.7% |
| Market cap | $0.2B | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | KRRO | RNTX |
|---|---|---|
| 2022 | -25.0% | -79.0% |
| 2023 | -75.1% | +28.6% |
| 2024 | -20.6% | -24.6% |
| 2025 | -79.0% | -49.6% |
| 2026 | +65.5% | -32.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are KRRO and RNTX good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.37 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between KRRO and RNTX?
As of 2026-08-27, the correlation of weekly returns between KRRO and RNTX is 0.37 over 3 years, 0.23 over 1 year and 0.25 over 5 years.
Is RNTX a good diversifier for KRRO?
Yes, to a useful degree: a correlation of 0.37 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.37 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: KRRO correlations · RNTX correlations
