allow users to exchange trading information an exemplary trading network environment for implementing trading systems and methods is shown in fig1 an exchange computer system 100 receives orders and transmits market data related to orders and trades to users exchange computer system 100 may be implemented with one or more mainframe desktop or other computers a user database 102 includes information identifying traders and other users of exchange computer system 100 data may include user names and passwords an account data module 104 may process account information that may be used during trades a match engine module 106 is included to match bid and offer prices match engine module 106 may be implemented with software that executes one or more algorithms for matching bids and offers a trade database 108 may be included to store information identifying trades and descriptions of trades in particular a trade database may store information identifying the time that a trade took place and the contract price an order book module 110 may be included to compute or otherwise determine current bid and offer prices a market data module 112 may be included to collect market data and prepare the data for transmission to users a risk management module 134 may be included to compute and determine a user 39 s risk utilization in relation to the user 39 s defined risk thresholds an order processing module 136 may be included to decompose delta based and bulk order types for processing by order book module 110 and match engine module 106 the trading network environment shown in fig1 includes computer devices 114 116 118 120 and 122 each computer device includes a central processor that controls the overall operation.