The final auction price is influenced by order demand. If a customer is in immediate need to trade they might submit a “discounted” auction-only limit sell order (an order below the highest bid) or “marked-up” auction-only limit buy order (an order above the lowest ask). These types of orders have a better chance at being filled because they will matching against a larger volume of placed orders .
If final auction price is below the highest bid, limit buy orders resting on the continuous trading order book may be filled in auction. In the event that the final auction price is above the lowest ask, limit sell orders resting on the continuous trading order book may be filled in auction.
For more detailed information on our different order types, please consult our Marketplace page.