MicroStrategy xStock (MSTRX) is 647.3× the size of Comcast xStock (CMCSAX) by market capitalisation. Their daily returns move barely together (correlation 0.25 across 37 shared trading days). MSTRX has been the more volatile of the two, at 101% annualised against CMCSAX's 47%.
CMCSAXMSTRX
0.25over 37 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 | CMCSAX | MSTRX |
|---|---|---|
| Max drawdown (400d) | -40.5% | -18.3% |
| Risk-adjusted return (90d) | -0.19 | 0.38 |
Relative strength over 90 days: MSTRX outperformed CMCSAX by 42.1% — measured on the CMCSAX/MSTRX ratio, so it holds regardless of market direction.