Systems and methods for trading commodity, an item or instrument are provided. The market prices and trading may be monitored to detect a spike in the market price or artificially high market price. Excess profits resulting from the sale at an artificially high market price may be distributed to market...http://www.google.com/patents/US20030055774?utm_source=gb-gplus-sharePatent US20030055774 - Systems and methods for sharing excess profits
