Code to represent the basis price type.
| Code | Meaning | 
|---|---|
| 2 | Closing Price at morning session | 
| 3 | Closing Price | 
| 4 | Current price | 
| 5 | SQ | 
| 6 | VWAP through a day | 
| 7 | VWAP through a morning session | 
| 8 | VWAP through an afternoon session | 
| 9 | VWAP through a day except YORI | 
| A | VWAP through a morning session except YORI | 
| B | VWAP through an afternoon session except YORI | 
| C | Strike | 
| D | Open | 
| Z | Others |