The International Securities Exchange (ISE), the US-based electronic options exchange, has implemented trading system functionality that automatically executes complex options orders to improve spread capability.

ISEspreads enables ISE members to automatically execute multiple-part trades, such as spreads and straddles, against the combination order book and against bids and offers posted in ISE's regular order book. Marketable complex orders sent to ISE will be filled instantly, providing customers with the same experience they have with single-series orders.