The Chart below displays how a long period of gains on light volume preceded a large decline in February of 2007. As the Pro Traders say, light volume always favors the upside. Interestingly today, Tuesday, September 8th, 2009, was the lightest volume of the year and the last month has been the lightest trading volume in the last couple years in total. Watch for the direction in this market when true volume returns. That could be the real key to where this market is headed.