ES Sept. options expire next friday(9/19)...do they trade on friday(9/19) or not?...will the last available day to trade them be on Thursday 9/18?thanks in advance...
From CME Index FAQ:
How do the quarterly E-mini futures settle and when is the last time to trade before expiration?
E-mini quarterly contracts expire at the same time and to the same price as their larger counterpart contracts. For quarterly futures contracts, trading can occur up to 8:30 a.m., Chicago time, on the third Friday of the month.