Nadex Adds Strikes on a Discretionary Basis on Trade Date April 23, 2012

Pursuant to Section 5c(c)(1) of the Commodity Exchange Act, Commission Regulation §40.6(d), and by the authority granted by Nadex Rules in 12.51, 12.61, 12.63, and 12.64 Nadex added additional strike levels on a discretionary basis in its Daily Germany 30, US SmallCap 2000, US Tech 100, and Wall St 30 Binary Contracts for trade date April 23, 2012 due to volatility in the underlying markets on that day. Nadex returned to the regular listing schedule for these contracts on April 24, 2012.