Patent ID: 11961140
Assignee: CHICAGO MERCANTILE EXCHANGE INC.
Field: IT methods for management (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. The computerized method of claim 1 further comprising:
receiving at the server via the electronic communications network, from a party trading on the electronic trading system, an electronic request for cancelling a trading order previously submitted to the server;
determining, by the processor, a value of a cancellation flag of the previously submitted trading order stored in the order book database;
when the value of the cancellation flag of the trading order is non-cancellable, denying, by the processor, the electronic request for cancelling the trading order;
when the value of the cancellation flag of the previously submitted trading order is cancellable:
determining, by the processor, a status of the previously submitted trading order;

when the status of the previously submitted trading order is available, cancelling, by the processor, the trading order;
when the status of the previously submitted trading order is engaged:
determining, by the processor, an engagement interrupt probability parameter value which, based on a probability function, randomly may or may not exceed a threshold engagement interrupt probability parameter value;
upon determining, by the processor, that the engagement interrupt probability parameter value is greater than the threshold engagement interrupt probability value:
cancelling, by the processor, engagement of the previously submitted trading order; and

upon determining, by the processor, that the engagement interrupt probability parameter value is less than a threshold engagement interrupt probability value:
denying, by the processor, the electronic request for cancelling the trading order; and
updating, by the processor, the value of the cancellation flag of the previously submitted trading order to non-cancellable in the order book database.