Nadex Adds Additional Strike Levels on a Discretionary Basis on Trade Date September 12, 2013

Pursuant to Section 5c(c)(1) of the Commodity Exchange Act, and Commission Regulation §40.6(d), and by the authority granted by Nadex Rules in 12.5 and 12.7, Nadex added additional strike levels on a discretionary basis in its Daily Gold and Silver Binary Contracts on trade date September 12, 2013. Nadex returned to its regular listing schedule for these contracts on September 13, 2013.