Time or size priority ?

Discussion in 'Order Execution' started by SamuelEngland, Feb 6, 2008.

  1. Hi guys.

    Quick question, hypothetical situation;

    If I were to put a 1 contract buy stop in on the ES at 1345.75, and someone else were to come in a few minutes later and put in a 100 contract order at the same price, do they jump ahead of me in the queue to be filled?

    As the title suggests, I'd like to find out whether it's time or size based priority.

    Many thanks
  2. Time first. There is no size priority.