FLEX options are customized options contract packages primarily used as portfolio hedging tools
The base service is an end-of-day offering that shows the package composition of flex symbols available on the previous trading day.
As with the Series Master Core data set and supplemental data set multiple files make up the FLEX offering. FLEX Ext (New Ext4 September 2023), FLEX Intraday (New September 2023), FLEXCorpAct and FLEX Open Interest.