Looking at the long term chart below, it seems pretty obvious that the bull market has quite a way to go before we get a sell signal. And by that I mean possibly one or two more YEARS. The RSI is just breaking above 70 (not crossing below), the MACD looks nowhere near ready to cross over to a sell signal, and the STOchastics have not yet dipped below 80. Every indicator reads LONG right now. With this in mind, looking at the shorter term charts, which are VERY OVERBOUGHT, we are long overdue for a SIGNIFICANT CORRECTION. What will be the catalyst? Your guess is as good as mine.
Posted by Alex Nason 
Nason Investment Research 