UVXY is influenced by the VIX. The VIX tends to start going up, even with the market going up towards the very end of a bull market. I posted a zerohedge article about that the other day.
UVXY tends to go down less when the market goes up (and lately has gone up with it) but yet tends to respond well to the upside when the market goes down.
It’s so volatile that if it surged up $10 per share, you’d probably want to cut your position in half and have a stop-loss at breakeven on the remainder of the shares. You’d want to move the stop up, WAY behind the volatile price.
Again this is not a recommendation. Just an observation of something I’ve run across relative to its performance vs SDS, SPXS, etc.