Disliked{quote} I don't know how much of an effect it would have on the cash index and underlying stocks. Probably not that much as futures volume is dwarfed by cash volume. I meant their would be a spike on the futures, but even that would be less than you might think, as arbitrage algos would go into overdrive when futures price deviates too far away from the cash index price.Ignored
I must say I thought and assumed, that there is only one index price.
Haven't the futures (as well as other financial instruments) solely been created to be able to secure one owns real positions, as stocks, or commodity purchases?!
How then come, that there shall be two different index prices?