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 ...
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