Abstract: A method of evaluating trading rules. A plurality of trading rules are received. Each trading rule includes at least one respective condition. Each condition includes at least one respective attribute, at least one respective value, and at least one respective operator that describes a relationship between the at least one respective attribute and the at least one respective value. The conditions of the plurality of trading rules are parsed into a collection of conditions so that the collection of conditions does not include duplicate conditions. A mapping is maintained from the collection of conditions to the plurality of trading rules that allows reconstruction of the plurality of trading rules from the collection of conditions. The conditions in the collection of conditions are evaluated. The rules are evaluated by referencing the evaluated conditions and the mapping.

Abstract: A network system that facilitates financial transactions. A software defined network may operate to provide a variety of trading related services to a variety of customers with a low latency. Core or processor affinity for routing processes may improve speeds of routing. Data capture through a shared memory space may allow for a variety of analytics without introducing unacceptable delay.

Abstract: An apparatus may include first and second processors. A first user may be bound to the first processor such that processes of the first user execute on the first processor and do not execute on the second processor. A second user may be bound to the second processor such that processes of the second user execute on the second processor and do not execute on the first processor.

Abstract: Fill rates may be determined for providers of orders, and trading commands against such orders may be filled, in part, based on the fill rates.

Abstract: A network system that facilitates financial transactions. A software defined network may operate to provide a variety of trading related services to a variety of customers with a low latency. Core or processor affinity for routing processes may improve speeds of routing. Data capture through a shared memory space may allow for a variety of analytics without introducing unacceptable delay.

Abstract: According to various embodiments, trades may be filled based at in part on order price and fill rates determined for providers of orders. In some embodiments, orders at a given price in an order book may be ordered in order of decreasing fill rate, such that orders associated with a higher fill rate (or higher probability of fill) are preferenced above orders associated with a lower fill rate. In some embodiments, order books may also be ordered based in part on response times from order providers. For example, orders in an order book may be ordered according to an algorithm that preferences higher fill rates and shorter response times ahead of orders with lower fill rates and longer response times. Order book ordering algorithms may also consider order quantity and interdependence and duplication of order quantity.

Abstract: Various embodiments are directed to a trading system and method for matching orders between liquidity takers and liquidity providers. A memory stores instructions which, when executed, direct the processor to perform various actions, such as the following. The processor may receive from a liquidity taker, an order to trade on an exchange. The order is routed to at least one liquidity provider with a target fill rate above a specific percentage. A response is received from the at least one liquidity provider. Based on the received response, the processor may update an actual fill rate of the at least one liquidity provider. The processor may determine, based on comparing the liquidity provider's actual fill rate with the target fill rate, a level of performance for the at least one liquidity provider. The processor may transmit a report about the at least one liquidity provider's level of performance.

Abstract: Some embodiments include a fantasy sports games or other type of gaming options. A gaming entity may establish a fund of money that is to be exposed to a gaming market in an attempt to win money from risking the fund of money. A gaming operator may use the pool or fund to create liquidity in a gaming market. Various gamers may enter into games with the gaming entity by matching with various portions of the pool or fund.

Abstract: A system includes a plurality of servers that are configured to execute a distributed matching system for the trading of one or more items.

Abstract: Some embodiments may relate to managing the risk of losses over a variety of risk venues. For example, a central system may monitor trading losses and profits by an entity over a plurality of exchanges. When losses exceed profits by some threshold amount, trading at the exchanges may be halted. Other example methods and apparatus are described.

Abstract: Systems and methods of evaluating rules. Other embodiments are also described.

Abstract: Systems and methods of evaluating rules. Other embodiments are also described.

Abstract: Systems and methods of evaluating rules. Other embodiments are also described.