what is an e mini s p 500 
the e mini s p 500 is an electronically traded futures contract that is one fifth the size of now delisted standard s p futures 2 its futures and options are based on the underlying s p 500 stock index consisting of 500 individual stocks representing the market capitalizations of large companies the s p 500 is a leading indicator of large cap u s equities the e mini s p 500 contract trades under the globex code es 8