| Tag | Field Name | XML Name | Data Type | Union Datatype | Description | Added | Depr. | Enums from tag |
|---|---|---|---|---|---|---|---|---|
| 652 | UnderlyingLastQty | @UndLastQty | Qty |
The calculated or traded quantity for the underlying instrument that corresponds to a derivative. Used for transactions that include the cash instrument and the derivative. | Added FIX.4.3 |
|