Transaction processing system which enables unconstrained data inputs to a constrained system to improve transaction precision

A user interface system for an electronic trading system having quantity data inputs constrained to whole numbers, the user interface system comprising:

• a user interface generator configured to cause electronic presentation, via an electronic communications network, of a user interface on a display of a client device coupled with the network, the user interface configured to receive, from a participant, a specification of a set of financial instruments, the specification identifying a proportional quantity of each financial instrument of the set relative to the other financial instruments of the set, at least one of the proportional quantities comprising a non-whole number value unacceptable to the electronic trading system due to the quantity data input constraint;
• an instrument generator coupled with the user interface generator and, responsive to the receiving, configured to generate a single financial instrument comprising an obligation to deliver, upon settlement, a position in each of the set of financial instruments, and enable trading thereof in the electronic trading system, the single financial instrument specifying an expiration date;
• a request receiver coupled with the instrument generator and configured to receive, from the participant, an electronic request message comprising an order for a whole number quantity, acceptable the electronic trading system, of the single financial instrument and, based thereon, match the received order with a previously received order counter thereto received from another participant, generate, based thereon, at least a position in the single financial instrument in association with the participant, and store, in a portfolio database coupled with the request receiver, data indicative of the generated position;
• and
• a settlement processor coupled with the portfolio database and configured to determine that the expiration date of the single financial instrument has occurred and, based thereon, create positions in association with the participant for a whole number quantity, acceptable to the electronic trading system, of each of the financial instruments of the set of financial instruments in accordance with the specification and the quantity of the single financial instrument, and based on the at least one of the proportional quantities comprising the non-whole number value and the quantity of the single financial instrument, one of credit or debit an account of the participant an amount based on a fractional remainder of the at least one of the proportional quantities comprising the non-whole number value after creation of the position in the whole number quantity of the financial instrument associated therewith.

A user interface system for an electronic trading system having quantity data inputs constrained to whole numbers, the user interface the system comprising:

• a processor and a memory coupled therewith, the memory having computer readable instructions stored therein which, when executed by the processor, cause the processor to:
• cause electronic presentation, via an electronic communications network, of a user interface on a display of a client device coupled with the network, the user interface configured to receive, from a participant, a specification of a set of financial instruments, the specification identifying a proportional quantity of each financial instrument of the set relative to the other financial instruments of the set, at least one of the proportional quantities comprising a non-whole number value unacceptable to the electronic trading system due to the quantity data input constraint;
• generate, responsive to the receiving, a single financial instrument comprising an obligation to deliver, upon settlement, a position in each of the set of financial instruments, and enable trading thereof in the electronic trading system, the single financial instrument specifying an expiration date;
• receive, from the participant, an electronic request message comprising an order for a whole number quantity, acceptable the electronic trading system, of the single financial instrument and, based thereon, match the received order with a previously received order counter thereto received from another participant, generate, based thereon, at least a position in the single financial instrument in association with the participant, and store, in a portfolio database coupled with the request receiver, data indicative of the generated position;
• and
• determine that the expiration date of the single financial instrument has occurred and, based thereon, create positions in association with the participant for a whole number quantity, acceptable to the electronic trading system, of each of the financial instruments of the set of financial instruments in accordance with the specification and the quantity of the single financial instrument, and based on the at least one of the proportional quantities comprising the non-whole number value and the quantity of the single financial instrument, one of credit or debit an account of the participant an amount based on a fractional remainder of the at least one of the proportional quantities comprising the non-whole number value after creation of the position in the whole number quantity of the financial instrument associated therewith.