I am sure both schools are profitable. However, I am curious statistically which school is more profitable. Value investors like to cite Warren Buffett as an example why value investing is superior. They ask "If shorter-term trading is so profitable, why are there no prominent ultra-rich traders who can compare with Warren Buffett"? I have been pondering over this question. Is shorter-term trading inferior to value investing mainly because it is not as scalable as value investing? What are the pros and cons of each approach?