Abstract: A method of order allocation is disclosed. The method includes receiving an incoming order, establishing an inner market representing a first portion of an order book which may be defined as a function of an inner market parameter, designating the first portion of the order book as a priority and allocating the first portion of the received incoming order based on the priority, establishing an outer market that represents a second portion of the order book that includes the remainder of the order book not represented by the inner market of the order book, assigning the received incoming order to one of the inner or outer markets as a function of the inner market parameter, allocating a first portion of the incoming order to the inner market utilizing a first-in, first-out (FIFO) algorithm, and allocating a second portion, in excess of the first portion, of the incoming order to the outer market using a pro-rata algorithm.

Abstract: A method allocates quantities of an underlying financial product for a plurality of orders, each being for a quantity of a derivative financial product counter to a previously received order for the derivative financial product and characterized by a ratio of the quantity of the derivative financial product to a quantity of the underlying financial product, and includes receiving first and second orders for quantities of the derivative financial product, computing first and second quantities of the underlying financial product, based on the first and second orders to achieve the ratio, rounding the first quantity to determine a first whole number quantity, generating a composite quantity of the underlying financial product based on the first and second quantities, generating a rounded representation of the composite quantity, and determining a second whole number quantity of the underlying financial product based on the rounded representation and the first whole number quantity.

Abstract: A method of order allocation is disclosed. The method includes receiving an incoming order, establishing an inner market representing a first portion of an order book which may be defined as a function of an inner market parameter, designating the first portion of the order book as a priority and allocating the first portion of the received incoming order based on the priority, establishing an outer market that represents a second portion of the order book that includes the remainder of the order book not represented by the inner market of the order book, assigning the received incoming order to one of the inner or outer markets as a function of the inner market parameter, allocating a first portion of the incoming order to the inner market utilizing a first-in, first-out (FIFO) algorithm, and allocating a second portion, in excess of the first portion, of the incoming order to the outer market using a pro-rata algorithm.

Abstract: A method of order allocation is disclosed. The method includes receiving an incoming order, establishing an inner market representing a first portion of an order book which may be defined as a function of an inner market parameter, designating the first portion of the order book as a priority and allocating the first portion of the received incoming order based on the priority, establishing an outer market that represents a second portion of the order book that includes the remainder of the order book not represented by the inner market of the order book, assigning the received incoming order to one of the inner or outer markets as a function of the inner market parameter, allocating a first portion of the incoming order to the inner market utilizing a first-in, first-out (FIFO) algorithm, and allocating a second portion, in excess of the first portion, of the incoming order to the outer market using a pro-rata algorithm.

Abstract: A method of order allocation is disclosed. The method includes receiving an incoming order, establishing an inner market representing a first portion of an order book which may be defined as a function of an inner market parameter, designating the first portion of the order book as a priority and allocating the first portion of the received incoming order based on the priority, establishing an outer market that represents a second portion of the order book that includes the remainder of the order book not represented by the inner market of the order book, assigning the received incoming order to one of the inner or outer markets as a function of the inner market parameter, allocating a first portion of the incoming order to the inner market utilizing a first-in, first-out (FIFO) algorithm, and allocating a second portion, in excess of the first portion, of the incoming order to the outer market using a pro-rata algorithm.

Abstract: Prices for instances of an exchange-traded contract type can be submitted using one or more of at least two types of order pricing data. Explicit order pricing data may specify a price for one or more contracts in a first manner, e.g., by explicitly stating a specific amount of currency. Relational order pricing data may provide information that permits determination of prices for contracts based on other data.

Abstract: In an Exchange which assigns only a whole number/integer representation of a computed number of futures contracts to a covered order for one or more option contracts, a method allocates quantities of an underlying financial product in connection with a plurality of orders, each being for a quantity of a derivative financial product derived from the underlying financial product and each being counter to a previously received order for a quantity of the derivative financial product, the previously received order being further characterized by a specified ratio of the quantity of the derivative financial product thereof to a quantity of the underlying financial product.

Abstract: A method of order allocation is disclosed. The method includes receiving an incoming order, establishing an inner market representing a first portion of an order book which may be defined as a function of an inner market parameter, designating the first portion of the order book as a priority and allocating the first portion of the received incoming order based on the priority, establishing an outer market that represents a second portion of the order book that includes the remainder of the order book not represented by the inner market of the order book, assigning the received incoming order to one of the inner or outer markets as a function of the inner market parameter, allocating a first portion of the incoming order to the inner market utilizing a first-in, first-out (FIFO) algorithm, and allocating a second portion, in excess of the first portion, of the incoming order to the outer market using a pro-rata algorithm.

Abstract: A method of order allocation is disclosed. The method includes receiving an incoming order, establishing an inner market representing a first portion of an order book which may be defined as a function of an inner market parameter, designating the first portion of the order book as a priority and allocating the first portion of the received incoming order based on the priority, establishing an outer market that represents a second portion of the order book that includes the remainder of the order book not represented by the inner market of the order book, assigning the received incoming order to one of the inner or outer markets as a function of the inner market parameter, allocating a first portion of the incoming order to the inner market utilizing a first-in, first-out (FIFO) algorithm, and allocating a second portion, in excess of the first portion, of the incoming order to the outer market using a pro-rata algorithm.

Abstract: A method of order allocation is disclosed. The method includes receiving an incoming order, establishing an inner market representing a first portion of an order book which may be defined as a function of an inner market parameter, designating the first portion of the order book as a priority and allocating the first portion of the received incoming order based on the priority, establishing an outer market that represents a second portion of the order book that includes the remainder of the order book not represented by the inner market of the order book, assigning the received incoming order to one of the inner or outer markets as a function of the inner market parameter, allocating a first portion of the incoming order to the inner market utilizing a first-in, first-out (FIFO) algorithm, and allocating a second portion, in excess of the first portion, of the incoming order to the outer market using a pro-rata algorithm.

Abstract: A method of order allocation is disclosed. The method includes receiving an incoming order, establishing an inner market representing a first portion of an order book which may be defined as a function of an inner market parameter, designating the first portion of the order book as a priority and allocating the first portion of the received incoming order based on the priority, establishing an outer market that represents a second portion of the order book that includes the remainder of the order book not represented by the inner market of the order book, assigning the received incoming order to one of the inner or outer markets as a function of the inner market parameter, allocating a first portion of the incoming order to the inner market utilizing a first-in, first-out (FIFO) algorithm, and allocating a second portion, in excess of the first portion, of the incoming order to the outer market using a pro-rata algorithm.

Abstract: A method of order allocation is disclosed. The method includes receiving an incoming order, establishing an inner market representing a first portion of an order book which may be defined as a function of an inner market parameter, designating the first portion of the order book as a priority and allocating the first portion of the received incoming order based on the priority, establishing an outer market that represents a second portion of the order book that includes the remainder of the order book not represented by the inner market of the order book, assigning the received incoming order to one of the inner or outer markets as a function of the inner market parameter, allocating a first portion of the incoming order to the inner market utilizing a first-in, first-out (FIFO) algorithm, and allocating a second portion, in excess of the first portion, of the incoming order to the outer market using a pro-rata algorithm.