Abstract: A system and method provide a one-order methodology in over the counter (OTC) markets to enhance execution performance by allowing a single order to be executable in multiple liquidity pools (also referred to as exchange platforms or exchange markets). The liquidity pools typically have different credit constraints and requirements to attract different customers. A customer may have an established trading relationship and credit with multiple liquidity pools. The system and method enable the customer to place an order simultaneously in multiple liquidity pools and receive the best possible price match, also referred to as a fill. Execution certainty is therefore enhanced. The system and method also process an order faster than with traditional order routing processes.