 wall street opens this morning again after friday's full trading session the s&p 500 index and the nasdaq each hit fresh all-time highs we've had a huge rally these markets are high and sooner or later we're going to have a significant correction and what i know about previous corrections is when you're in a correction you don't want to be in the most expensive stuff i think it's a time when people need to be very careful about diversifying their exposure and not being overexposed to the most expensive names