Format:
FUT:<CONTRACT> <EXPIRATION DATE>
Examples:
FUT:CL 20161210
FUT:NG 20170317
<CONTRACT> Label for underlying future contract
<EXPIRATION DATE>: String in YYYYMMDD format indicating the expiration date for the contract.
FUT:<CONTRACT> <EXPIRATION DATE>
FUT:CL 20161210
FUT:NG 20170317
<CONTRACT> Label for underlying future contract
<EXPIRATION DATE>: String in YYYYMMDD format indicating the expiration date for the contract.