I've been long $UVXY put verticals all last week. (just one lots, as I don't really understand vol-etf's/etn's like I should... but I know somehow the cost of carry each month mathematically decays the instrument? Or something like that lol)
These have to be rolled (they are backed by futures), and rolling down causes decay. The triple leveraged ETFs do this at a much faster pace. It's really simple, you just dont want to hold them for long, or through rolling.
This is a very simplified view of it. If you want a better view, plot the term structure of VIX and follow the roll policy of UVXY.
, breathing in and out oscillating around a central proportional mean. Rinse and repeat, the market (although a forever evolving mechanism) has stayed the same in terms of movement, price action. So these cool charts show price moving in space, time, and THE CONTINUUM..."