iPath S&P 500 VIX Short Term Futures ETN ( VXX) -2.4% The VIX-tracking VXX's previous 2012 lows provided little support as improving investor confidence drove the ETN to its third day of losses. In 2012, this instrument has seen only two days of positive action. The VIX benchmark itself has given back all of all of the gains from the final weeks of summer. All prices are as of 2:14 PM EST. Written by Don Dion in Williamstown, Mass.