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Hidden Order Handling using Simulated Hidden Orders

IB will attempt to route hidden orders to exchanges that support the order type natively. If there are no exchanges available with native support of hidden orders, IB may simulate a hidden order by holding the order and submitting an Immediate or Cancel order to an exchange when the order becomes marketable.

Although IB will attempt to handle a hidden order in the same way that it would be handled natively on an exchange, there exists a remote possibility that an execution will be delayed or may not take place. Execution of hidden orders is on a best-efforts basis.