Patent ID: 8407116

Claim:
A collector facility for an electronic trading system comprises: one or more computer systems, at least one of the computer systems comprising: an interface configured to provide a single, common point of entry for coupling a plurality of order delivery systems and quote entry systems that send orders/quotes to the one or more computer systems in the collector facility; and a computer readable medium configured to store a computer program product comprising instructions to cause the one or more computer systems to: manage quotes received from the quote entry systems and orders received from the plurality of order delivery systems; manage order routing/execution to provide for orders received by the interface a single point delivery of either executions to the electronic trading system or routing of orders to external systems and to attempt to execute or route received orders against all displayed sizes of market participants in time priority, and for any balance, execute or route received orders against displayed size of non-participants; receive, by the one or more computer systems at the collector facility from a market participant system, a request to cancel an execution of one of the received orders of a market participant associated with the market participant system and participating in the electronic trading system as an entity that has automatic executions of its orders, subsequent to receiving the request to cancel, determine whether or not the one of the received orders has not yet been executed by the electronic trading system; subsequent to determining whether or not the one of the received orders has not yet been executed by the electronic trading system, cancel the order if the one of the received order has not been executed; and send a message to a system of the market participant to deny the request to cancel if the one of the received orders has been executed.