There is still significant upside left in equity markets. Fundamentals are supportive and the crowd still remains highly pessimistic
Is the market overbought? No, certainly not. Not until the NYSE 200 day MAR gets above 80% would I consider the market to be overbought. It is a long way off that.
In any event, given the amount of moms and pops who have been shaken out of this market over the last 6 months my feeling is that once this market gets to an "overbought" condition it may well stay there for an extended period of time.