I'm holding SEP Natural Gas Futures contracts. I know that UNG is currently in the process of selling SEP and buying OCT (just found this out). Does this mean it is wise to sell contract ahead of UNG's rollover since all that selling will depress the price or does the price typically rebound after the are done, or does not not matter and everything equalizes out in the long run? Also the NAV on UNG is 11.88 and it is trading at 12.49. Huge premium because there are no more shares. I heard that due to the huge premium trading my be halted, or, UNG will have to add more shares. Seems like either one of these actions will cause a steep price decrease. Especially if trading is halted, seems people panic and sell. FCG is alternative but it isn't a pure play on Natural Gas as it is effective by the stock market movements (it has done much better than UNG do to the market rally.) Seems we are due for a pull back so probably not the bst time to switch from FCG to UNG?? But barring another economic collapse, seems like in the long-run FCG should continue to outperform UNG benefiting from not only the eventual rise in NG prices but also the rise in the market in general. Feedback is greatly appreciated.