Please stop trying to re-define words which already have an established definition. "Passive" and "active" investing are well defined concepts, and Berkshire Hathaway falls squarely in the "active" category.

Fair criticism of my phrasing, but at the same time you can't put day traders, HFT, or most hedge fund strategies in the same bucket as Berkshire Hathaway. There is a distinct difference in time horizons behind the strategies.

active = alpha; passive = beta;