I think those who invest in mutual funds want someone else to do the thinking for them. But the fact that they can move the money around the family of mutual funds just through a phone call lets them feel that they can play tycoons. ↗
There were two qualities about the mutual funds of the 1920s that made them extremely speculative. One was that they were heavily leveraged. Two, mutual funds were allowed to invest in other mutual funds. ↗