Nadex Adds Additional Strike Levels on a Discretionary Basis on Trade Date December 16, 2013

Pursuant to Section 5c(c)(1) of the Commodity Exchange Act, and Commission Regulation §40.6(d)(2)(iv), and by the authority granted by Nadex Rules in 12.59, 12.61, 12.63 and 12.65 Nadex added additional strike levels on a discretionary basis in its Daily Wall Street 30, US 500, US Tech 100 and US SmallCap 2000 Binary Contracts on trade date December 16, 2013. Nadex returned to its regular listing schedule for these contracts on December 17, 2013.