iPath S&P 500 VIX Short Term Futures ETN ( VXX) -1.2% Not even this morning's weak GDP reading has been able to derail the improving investor confidence. For a third day, the fear-tracking VXX is heading into negative territory. Although its multi-week downturn has been steep, the ETN still has some ground to cover before returning to levels seen prior to its August breakout. All prices as of 2:14 PM EST. Written by Don Dion in Williamstown, Mass.