Nadex Adds Additional Strike Levels on a Discretionary Basis on Trade Date December 21, 2012

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 US Tech 100, Wall St 30, US 500 and US SmallCap 2000 Binary Contracts for Trade Date December 21, 2012. Nadex returned to its regular listing schedule for these contracts on December 24, 2012.