Perhaps just a matter of time as short volatility strategies have paid off far better than long ones in recent years (though not so far in 2014), the VelocityShares Daily Inverse VIX Short-Term ETN (XIV) has shoved aside the S&P 500 VIX Short-Term Futures ETN (VXX) as the most popular volatility-based ETN. The XIV had about $778M in AUM as of the end of last week vs. roughly $711M for the VXX.
The XIV doubled in 2012, according to ETF Trends, and did so again last year. Another VelocityShares inverse volatility offering, the Daily Inverse VIX Medium Term ETN (ZIV) is also seeing a good deal more interest - its share count has doubled in the past six months.
As for Seeking Alpha Real Time Alerts Subscribers: The VXX has 8,935, the XIV 2,166, the ZIV 347.