Nadex Amends its Rules Pertaining to its Definitions and Obligations of Market Makers, and Intends to List New Political Election Event Derivatives®

Pursuant to Section 5c(c)(1) of the Commodity Exchange Act, and Commission Regulations §§40.2(a) and 40.6(a), Nadex amends its Rules 1.1 (Definitions) and 4.4 (Obligations of Market Makers), and intends to list five new Political Election Event Derivatives ®. These new Rules and amendments will be effective as of January 4, 2012.