RE:Something's not right about hvu erosion. These vix following double etfs are nothing but trouble if you don't know everyting about how they calculate the value of the nav. first off its tracking sept and october vix future and that % changes daily then there is the currency adjustments you have to factor in then there is the bid ask which does not always truly reflect the price that the instrument should actualy be trading at. and now with the spilts nobody has a clue what is going on. Except the insiders who are probably rolling on the floor laughing with glee as they siphon of the piles of free cash being offered up.