Tether Gold (XAUT) is 1274.7× the size of STAU (STAU) by market capitalisation. Their daily returns move barely together (correlation 0.30 across 31 shared trading days). STAU has been the more volatile of the two, at 161% annualised against XAUT's 24%.
STAUXAUT
0.30over 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 | STAU | XAUT |
|---|---|---|
| Max drawdown (400d) | -27.0% | -19.4% |
| Risk-adjusted return (90d) | -0.02 | -0.36 |
Relative strength over 90 days: XAUT outperformed STAU by 0.6% — measured on the STAU/XAUT ratio, so it holds regardless of market direction.