Name	Nature	Description	59/TimeInForce	168/EffectiveTime	126/ExpireTime	1629/ExposureDuration
Immediate Or Cancel	Aggressive	The Order must be executed immediately, at least in part (Partial fills are allowed), otherwise the Order is cancelled. AKA 'Fill and Kill'.	IOC	Optional	-	-
Fill Or Kill	Aggressive	The Order must be executed immediately, in full (no Partial fills), otherwise the Order is cancelled.	FOK	Optional	-	-
Good For Auction	Resting	TODO	GFA	Optional	Optional	Optional
Good For Day	Resting	The Order expires automatically on close of the trading day, if it is still unfilled.	GFD	Optional	Optional	Optional
Good For Time	Resting	Order is active for a specified duration. TODO TWAP?	GFT	Optional	-	Mandatory
Good 'Til Date	Resting	Order is active until a specified time. TODO TWAP?	GTD	Optional	Mandatory	-
Good 'Til Canceled	Resting	The Order remains active until it is either executed or cancelled. NOTE: Maximum possible duration is one trading week, but is equivalent to DAY for most Venues that reset daily.	GTC	Optional	-	-
At Market Open	Resting	TODO	AMO	Optional	-	-
At Market Close	Resting	TODO	AMC	Optional	-	-

Order Types

Standard Order Types

There are three broad categories of order type:

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