BRK.B vs RKTO: Correlation
How closely do Berkshire Hathaway (BRK.B) and Rocket One Inc. (RKTO) trade together? Their weekly returns over three years give a correlation of -0.21, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BRK.B and RKTO?
On 3 years of weekly data the BRK.B/RKTO correlation comes out at -0.21, negative, meaning they tend to move in opposite directions. The link has loosened recently: the 1-year correlation (-0.32) runs below the 3-year figure (-0.21). The 5-year figure is -0.03, and annualized covariance runs at -444.9 %².
Among the 31 assets we track against BRK.B, RKTO sits near the bottom by co-movement, at rank #29. The last year tells two different stories: BRK.B led by 41.9 percentage points, +1.6% for BRK.B against -40.3% for RKTO. Note the risk asymmetry: RKTO runs 8.5 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
BRK.B vs RKTO: side by side
| BRK.B (Berkshire Hathaway) | RKTO (Rocket One Inc.) | |
|---|---|---|
| 1-year return | +1.6% | -40.3% |
| 5-year return | +76.3% | -97.7% |
| Volatility (ann.) | 15.9% | 135.8% |
| Beta vs S&P 500 | 0.43 | 0.30 |
| Max drawdown (3Y) | -14.9% | -81.1% |
| Market cap | $1,078.3B | – |
| P/E (trailing) | 12.7 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Financials | US Listed |
Year-by-year returns
| Year | BRK.B | RKTO |
|---|---|---|
| 2022 | +3.3% | -52.7% |
| 2023 | +15.5% | -81.5% |
| 2024 | +27.1% | -48.1% |
| 2025 | +10.9% | +32.4% |
| 2026 | +0.2% | -27.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BRK.B and RKTO good diversifiers for each other?
By historical standards, yes. A correlation of -0.21 means the two rarely move for the same reasons.
FAQ
What is the correlation between BRK.B and RKTO?
The BRK.B/RKTO correlation stands at -0.21 on a 3-year window (1 year: -0.32, 5 years: -0.03), computed from weekly returns as of 2026-08-27.
Is RKTO a good diversifier for BRK.B?
By historical standards, yes. A correlation of -0.21 means the two rarely move for the same reasons.
What does a correlation of -0.21 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: BRK.B correlations · RKTO correlations
