A time in force for options orders, specifying that the order must execute immediately and in its entirety, or be canceled.
- Create an options order (click the Ask Price to create a BUY order, or the Bid Price to create a Sell order).
- In the TIF field, select FOK.
If FOK is not displayed in the dropdown list, it is not applicable to the order your are creating.
- Transmit the order by clicking the "T" in the status field.