Integrated balanced order crossing mechanism

A computer system comprising a memory and one or more processors, the memory storing executable instructions that, when being executed by the one or more processors, cause the one or more processors to:

• receive a cross request from a first market participant in a single transaction, the cross request including data specifying a client order and indicating a predefined cross match type, the cross request being a request to enter a cross event of said predefined cross match type into an order book and perform a cross match of said client order in accordance with said predefined cross match type;
• receive orders and/or quotes from one or more second market participants different from said first market participant, said orders and/or quotes being received within a predetermined period of time;
• and
• perform the cross match in accordance with said predefined cross match type in the order book immediately after expiration of said predetermined period of time, wherein performing the cross match in accordance with said predefined cross match type comprises matching the client order against an order of the first market participant and zero or more of the orders or quotes received from the one or more second market participants, the order of the first market participant being generated as an opposite order to the client order and having a higher priority than any orders or quotes received from the one or more second market participants within said predetermined period of time that are of the same price level than the order of the first market participant.