Just trying to understand how this order type is being executed. Let's say, we have price 30.10-30.12 I'm sending a 'market' buy order. What happens next: 1) If market is stable am I got filled at 30.12? 2) If market is moving fast between 30.15 and 30.30, what price would I get? 3) If the market jumped to 30.30 and then fell back to 30.10. Was I filled at 30.30? The last question is the main. PS First of all I'm interested how this order type behaves in IB.