For the size of SPX, the spread is not bad at all. Add in the weekly expiration cycles out past 40 days, 1256 tax advantage and it is a better product to trade with size vs. SPY. People get hung up on the bid ask vs. SPY and not the actual trade prices.I don't like SPX options. The spread is brutal. Good for sellers, bad for buyers.
I have decided to leave here for a while and post on T2W - too many trolls here, as per the mods!Interesting topic. Im also interested in seeing OI data leading up to expiration.
Is the idea here to see whether there is any pinning on the strike with highest OI?
Cheers