Originally published on Forbes.com
On every mutual fund advertisement touting its track record is language mandated by the SEC to the effect that past performance does not guarantee future results. And the SEC is right; indeed there is little evidence in mutual fund performance statistics that past results have any predictive value at all.
But why is this the case? In almost every other field of human activity past performance does predict the future. A great violinist today is likely to be great tomorrow; similarly a heart surgeon, or a basketball player. Why is investment management one of the few spheres where yesterday doesn’t predict tomorrow? Answering this question is central to picking investment managers and strategies, so let me share some ideas.
READ REMARKS....