Purgy Pengoon (PURGY) and Achi (ACH) compared side by side. Their daily returns move loosely together (correlation 0.55 across 26 shared trading days). PURGY has been the more volatile of the two, at 283% annualised against ACH's 75%.
PURGYACH
0.55over 26 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 | PURGY | ACH |
|---|---|---|
| Max drawdown (400d) | -74.6% | -72.3% |
| Risk-adjusted return (90d) | -0.21 | 0.05 |
| Best 30 days (past year) | — | +62.8% |
| Worst 30 days (past year) | — | -41.8% |
Relative strength over 90 days: ACH outperformed PURGY by 46.4% — measured on the PURGY/ACH ratio, so it holds regardless of market direction.