You are making some very broad statements based on a very limited analysis. If you do the same comparison of change in spot price vs change in UNG price for the 1/1/08 to 7/3/08 and 7/3/08 to 8/13/08 time periods you will find that the UNG and spot price changes are very correlated.
Natural Gas Fund Is Flaming Out [View article]
Natural Gas Fund Is Flaming Out [View article]