Patent ID: 7792735

Claim:
A method for computing margin requirement during the trading day in an electronic trading system, the method comprising: determining by a computer device a number of spreads based on working spread positions of each leg of an exchange provided spread comprising a first tradeable object and a second tradeable object being traded by a trading entity, and further based on a first long filled position and a first short filled position associated with the first tradeable object that is individually traded at the exchange by the trading entity and a second long filled position and a second short filled position associated with the second tradeable object that is individually traded at the exchange by the trading entity, wherein the first long and short filled positions and the second long and short filled positions of the individually traded first tradeable object and the second tradeable object are grouped to form spreads; determining by the computer device a risk factor associated with the number of spreads, wherein the risk factor for the number of spreads is based on a relative time difference between a first expiration time of the first tradeable object and a second expiration time of the second tradeable object; computing by the computer device a spread margin requirement using the number of spreads and the risk factor associated with the number of spreads, wherein the risk factor is used to increase the spread margin requirement when the relative time difference between the first expiration time and the second expiration time is increased, and to decrease the spread margin requirement when the relative time difference is decreased; and storing by the computer device the spread margin requirement.