Time in Force for Orders

Introduction

The time in force for an order defines the length of time over which an order will continue working before it is canceled.

Main time in force options:

DAY - A Day order is canceled if it does not execute by the close of the trading day. Unless otherwise specified, every order is a Day order.
GTC - A Good-Til-Canceled order will continue to work within the system and in the marketplace until it executes or is canceled by the customer. Customers who trade U.S. equities may use GTC for Limit, Stop, and Stop-Limit orders.
OPG - Use OPG to send a market-on-open (MOO) or limit-on-open (LOO) order.
GTD - A Good-Til-Date order will remain working within the system and in the marketplace until it executes or until the close of the market on the date specified.
IOC - Any portion of an Immediate-or-Cancel order that is not filled as soon as it becomes available in the market is canceled. IOC is valid for market or limit orders.
FOK - If the entire Fill-or-Kill order does not execute as soon as it becomes available, the entire order is canceled.