Ethena USDe (USDE) is 96.4× the size of Fidelity Digital Dollar (FIDD) by market capitalisation. Their daily returns move barely in opposite directions (correlation -0.08 across 54 shared trading days). Both have run at a similar volatility, around 1% annualised.
FIDDUSDE
-0.08over 54 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 | FIDD | USDE |
|---|---|---|
| Max drawdown (400d) | -0.1% | -0.3% |
| Risk-adjusted return (90d) | -0.06 | -0.02 |
| Best 30 days (past year) | — | +0.1% |
| Worst 30 days (past year) | — | -0.1% |
Relative strength over 90 days: USDE outperformed FIDD by 0.1% — measured on the FIDD/USDE ratio, so it holds regardless of market direction.