Ethereum (ETH) is 202821.2× the size of Rubidium (RBD) by market capitalisation. Their daily returns move barely in opposite directions (correlation -0.02 across 31 shared trading days). RBD has been the more volatile of the two, at 97% annualised against ETH's 62%.
RBDETH
-0.02over 31 shared trading days
Measured on daily returns rather than on prices. Two assets that both simply trend upward score near 1.0 on raw prices whether or not they move together, so returns are what answer the question people mean by correlation.
| Metric | RBD | ETH |
|---|---|---|
| Max drawdown (400d) | -6.7% | -66.5% |
| Risk-adjusted return (90d) | 0.18 | 0.36 |
| Best 30 days (past year) | — | +34.1% |
| Worst 30 days (past year) | — | -44.6% |
Relative strength over 90 days: RBD outperformed ETH by 8.1% — measured on the RBD/ETH ratio, so it holds regardless of market direction.