That cross was useless in Jan-May 2006: <A HREF="http://stockcharts.com/h-sc/ui?s=$SPX&p=D&yr=1&mn=0&dy=0&id=p61172568161&a=12577505" target="_blank">http://stockcharts.com/h-sc/ui?s=$SPX&p=D&yr=1&mn=0&dy=0&id=p61172568161&a=1...</A> Moving average crosses are lagging indicators. I've posted some studies on them here in the past showing it. The 1 and 2-day crosses are the only ones that seem to beat buy and hold.