A system and method determine rewards or other incentives for market participants submitting orders for financial instruments on a financial exchange. The system and method determine if orders submitted by one or more market participants are eligible for a reward or other incentive by identifying orders that are at a best bid or offer for a corresponding financial instrument. The system and method determine a number of eligible orders submitted by each of the one or more market participants and applies a reward or other incentive to a particular market participant with the most eligible orders or greatest aggregate size of eligible orders.