Pre-Open Timing for Trade at Settlement (TAS) Contracts (Futures instruments only)

The Pre-Open session commences at the time designated by the Exchange, but the Pre-Open commencement times for TAS and non-TAS contracts are uniquely defined. The Pre-Open time for any TAS contracts in that product will commence randomly during the first three seconds following the start time of the Pre-Open session and the Pre-Open time for any non-TAS contract in a product will commence randomly between three to six seconds following the start time of Pre-Open. Please see the diagrams below for TAS and Non-TAS Instrument examples of this behavior.