As Lumifer says, the truth value of the EMH depends on the exact formulation, and there are several variations even within the typical ‘strong/semi-strong/weak’ divisions.
But let me put it this way—I don’t take people who argue against the weak-form EMH seriously, unless they own a yacht.
As Lumifer says, the truth value of the EMH depends on the exact formulation, and there are several variations even within the typical ‘strong/semi-strong/weak’ divisions.
But let me put it this way—I don’t take people who argue against the weak-form EMH seriously, unless they own a yacht.