CHICAGO, May 3, 2013 /PRNewswire/ -- Today, Zacks Investment Ideas feature highlights Features: iPath S&P 500 VIX Short-Term Futures ETN (AMEX:VXX ), ProShares Ultra VIX Short-Term Fut ETF (AMEX:UVXY)and VelocityShares Daily 2x VIX ST ETN ...

iPath S&P 500 Short-Term VIX futures ETN (VXX): The Chicago Board Options Exchange Market Volatility Index or the VIX, is a popular measure of the implied volatility of the S&P 500 market index. You may hear it often referred to as the fear gauge or ...