Overnight.fi USDC+ (USDC+) and Tether (USDT) compared side by side. Over the past 30 days, USDC+ is ahead by 0.3 percentage points (USDC+ +0.3% against USDT -0.1%). Their daily returns move barely together (correlation 0.04 across 21 shared trading days). USDC+ has been the more volatile of the two, at 10% annualised against USDT's 1%.
USDC+USDT
0.04over 21 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 | USDC+ | USDT |
|---|---|---|
| Max drawdown (400d) | -1.7% | -0.2% |
| Risk-adjusted return (90d) | 0.03 | -0.03 |
Relative strength over 90 days: USDT outperformed USDC+ by 0.2% — measured on the USDC+/USDT ratio, so it holds regardless of market direction.