USDC (USDC) is 31138.2× the size of STBL USST (USST) by market capitalisation. Their daily returns move barely together (correlation 0.11 across 85 shared trading days). USST has been the more volatile of the two, at 10% annualised against USDC's 0%.
USSTUSDC
0.11over 85 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 | USST | USDC |
|---|---|---|
| Max drawdown (400d) | -2.9% | -0.3% |
| Risk-adjusted return (90d) | 0.04 | 0.05 |
| Best 30 days (past year) | — | +0.2% |
| Worst 30 days (past year) | — | -0.2% |
Relative strength over 90 days: USST outperformed USDC by 0.3% — measured on the USST/USDC ratio, so it holds regardless of market direction.