Does this have any practical impact for the retail trader? If the news was monthly SPX expiration to be moved to Friday evening (which was what I initially thought the thread title meant), then I'd be all over it.
I wonder if this will impact Thursday expiry index options like NDX. This always confused me since RUT expires Saturday even though it's also a European settled index. It'd be nice if they were all the same.
you don't want to use SPXPM? in general i don't really think this is news. first of all you can only exercise options on friday until 530 est (well i've never heard of anyone doing it later).
I do use SPXPM. But a lot of my trades are time spreads on weeklies, which SPXPM doesn't have. Some of the time spreads will hit the monthly options, which then becomes different because of the AM expiration for SPX.