| Tag | Field Name | XML Name | Data Type | Union Datatype | Description | Added | Depr. | Enums from tag |
|---|---|---|---|---|---|---|---|---|
| 436 | UnderlyingContractMultiplier | @Mult | float |
Underlying security's ContractMultiplier. See ContractMultiplier (231) field for description | Added FIX.4.2 |
|