Quote from JoshDance:
Good post, but one (futures) cannot always lead the other (cash), thus risk free arbitrage would exist; it's more accurate to say that the premium fluctuates during the day, and buy and sell programs act on extremes in premium, both a relatively high or low premium (though in the current market of course, the premium is always negative).
yes yes yes, you are exactly correct. I was just trying to explain high tick readings. Also, the statement futures lead is typically valid and useful only in very fast markets.

