| Name | Type | Description |
|---|---|---|
| Symbol | string | The underlying option security symbol for the trade |
| Timestamp | DateTime? | The UTC timestamp of order placement |
| Type | string | The type of unusual trade |
| TotalValue | decimal? | The aggregated value of all option contract premiums included in the trade |
| TotalSize | decimal? | The total number of contracts involved in a single transaction |
| AveragePrice | decimal? | The average premium paid per option contract |
| Contract | string | The option contract symbol |
| AskAtExecution | decimal? | Ask price at execution |
| BidAtExecution | decimal? | Bid price at execution |
| Sentiment | string | Bullish, Bearish, or Neutral Sentiment is estimated based on whether the trade was executed at the bid, ask, or mark price. |
| UnderlyingPriceAtExecution | decimal? | Price of the underlying security at execution of trade |