Because at the level of 0.0005 the only chance is by 0.0001 each time and that is 20%. If it closes today at 0.0004 then monday the change will be 25% or at 0.0006 it will be 16,66%. It might make this stock look like it is easy to make money here, but if you look at the volume traded it is only about a couple off hundred bucks each time and the flippers are standing in line to make that flip.