US Patent 11887191 On-demand auction

A method for performing an auction implemented via an exchange computer system, including receiving, from a user device, a security transaction order, receiving a first matching order, initiating a delay timer that runs for a first period of time, determining that the first period of time has expired, initiating an auction timer that runs for a second period of time, receiving, during the second period of time, one or more additional matching orders, wherein each of the one or more additional matching orders includes a request for participation in the auction, determining that the second period of time has expired, and facilitating a transaction based on the security transaction order.