| Name | Type | Description |
|---|---|---|
| symbol | Character | The ticker symbol |
| timestamp | POSIXlt | The UTC timestamp at the time of the trade. |
| price | Numeric | The price of the trade. |
| size | Numeric | The size of the trade. |
| total_volume | Numeric | The total volume of the symbol for the day up to the timestamp point in time. |
| market_center | Character | The market center for the trade. |
| condition | Character | The condition of the trade. |
| is_darkpool | Logical | If the trade was darkpool or not. |