JL, true that regarding the ETFs. I have no idea also about which ones include AMRN. As for the VXX, it tracks the performance of the VIX Short-Term Futures™ Index Total Return (the Volatility Index) which benefit from such time when the market is extremely volatile. VXX reflects the implied volatility of the S&P 500® at various points along the volatility forward curve. This might be a good hedge to long position if uncertainly is building or markets are at some very high valuation