Orders

Order types, time in force, brackets and the state machine.

Types

• Market and limit
• Stop-market and stop-limit, held by the engine and released to the venue when triggered
• Brackets: an entry plus a take-profit limit and a stop-loss stop; the exits go live when the entry is done, are reduce-only, and cancel each other
• Time in force: GTC (a remainder rests) or IOC (a remainder is canceled)
• Reduce-only

State machine

An order changes state only by applying an order event. A rejected event leaves the order unchanged.

Initialized -> Submitted | Rejected | Canceled (bracket child canceled before activation)
Submitted   -> Accepted  | Triggered | Canceled | Rejected
Triggered   -> Accepted  | Canceled  | Rejected
Accepted    -> PartiallyFilled | Filled | Canceled
PartiallyFilled -> PartiallyFilled | Filled | Canceled
Filled, Canceled, Rejected: terminal

Planned

Post-only, iceberg and trailing stops; GTD, FOK and day orders.