Can someone tell me in simple form how tvix, ugaz and dgaz go up or down. Let start off with DGAZ to me when the weather is good in NYC it goes up. The more sun and temperature it goes up higher. It probably has nothing to do with NYC weather, but that how I played it and have done great. Please let me know if weather and more sun has anything to do with this. Also if its about weather does it look at only USA or World weather. UGAZ I just started to put my money here now after seeing the weather going down here in NYC. Once again I played it correctly as it went up by 10 cents, while DGAZ was going down. Is this played the same way as DGAZ. TVIX - When the stock market is doing horrible this seems to be going up. If the dow jones and nasdaq goes down does this affect TVIX to go up or is it only S&P 500. Maybe it's a different factor. I don't touch TVIX as I am not sure when it goes up or down and what effects it do go up or down. So in simple form what controls when these three stock go up or down.