A system for trading a plurality of derivative financial instruments comprises a processor operable to receive a first order to buy a derivative financial instrument that represents a contestant in a contest. The processor is further operable to receive a second order to sell the derivative financial instrument. The processor is further operable to determine a market price based at least in part on the first order and the second order. The processor is further operable to execute a trade at the determined market price. The system further comprises a memory operable to store the first order and/or the second order.