Methods and systems for trading and replicating contingent claims, such as derivatives strategies, in a demand-based auction are described. In one embodiment, a set of demand-based claims, each of which can be a vanilla option or a digital option, approximate or replicate the contingent claim into a...http://www.google.com.hk/patents/US20030236738?utm_source=gb-gplus-share專利 US20030236738 - Replicated derivatives having demand-based, adjustable returns, and trading exchange therefor
