Trigger Methods

The Trigger Method defined in the [IBApi.Order](/tws-api/doc/orders/the-order-and-contract-objects) class specifies how simulated stop, stop-limit, and trailling stops, and conditional orders are triggered. Valid values are:

• 0 – The default method for instrument
• 1 – “Double bid/ask” function, where stop orders are triggered based on two consecutive bid or ask prices.
• 2 – “Last” function, where stop orders are triggered based on the last price
• 3 – “Double last” function
• 4 – Bid/ask function
• 7 – Last or bid/ask function
• 8 – Mid-point function

Below is a table which indicates whether a given secType is compatible with bid/ask-driven or last-driven trigger methods (method 7 only used in iBot alerts)

Important notes :

• If an incompatible triggerMethod and secType are used in your API order, the order may never trigger.
• These trigger methods only apply to stop orders simulated by IB. If a stop-variant is handled natively, the trigger method specified is ignored. See our Stop Orders page for more information.