| Name | Type | Description | Notes |
|---|---|---|---|
| sec_type | Option<String> | Asset Class | [optional] |
| months | Option<String> | List of expiration month(s) and year(s) in MMMYY format separated by semicolon | [optional] |
| symbol | Option<String> | [optional] | |
| exchange | Option<String> | Listing Exchange | [optional] |
| leg_sec_type | Option<String> | For combo's defines the asset class for each leg | [optional] |