| Name | Type | Description |
|---|---|---|
| last | float | The price of the last trade |
| last_size | int | The size of the last trade |
| last_timestamp | datetime | The time of the last trade |
| volume | int | The cumulative volume of this options contract that traded that day. |
| ask | float | The price of the top ask order |
| ask_size | int | The size of the top ask order |
| ask_timestamp | datetime | The timestamp of the top ask order |
| bid | float | The price of the top bid order |
| bid_size | int | The size of the top bid order |
| bid_timestamp | datetime | The time of the top bid order |
| open_interest | int | The total number of this options contract that are still open. |
| exercise_style | str | The exercise style of the option. ("A" = "American", "E" = "European") |