Just do your homework on these volatile VIX ETNs if you haven't already. Here is the TVIX double VIX ETN with the more popular VXX ETN overlaid in blue. The TVIX will move double what the VXX will but if you hold it and it goes sideways you will see far more serious price erosion with the double ETN:TVIX compared to the VXX. They are both for short term trading but have these differences. Most of the double ETFs/ETNs are bad for erosion. But the TVIX which is double is worse than VXX for that.