Type: float
Expresses the risk of an option leg
Value must be between -1 and 1.
A Call Option will require a ratio value between 0 and 1
A Put Option will require a ratio value between -1 and 0
Added in protocol FIX.4.4 (18)
See in: FIX.5.0, FIX.5.0SP1, FIX.5.0SP2.