The Gann fan from last two historical top and bottom shows we broke the 4/1 angle and we will be heading next to the 8/1 resistance, somewhere around 600. However, the buying force has shown signs of weakness and it's possible that we are headed for a few weeks of downtrend where we could even visit the 4/1 that's become now the support. William's R and money flow both show overbought conditions.