Nadex Adds Discretionary Strike Levels and Amends Strike Widths for the Week of August 31, 2015

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 Chapter 12, due to volatility in the underlying markets upon which the Nadex contracts are based, Nadex added additional strike levels on a discretionary basis in various Daily, Weekly, 2-Hour Intraday US Indices Binary contracts from September 1 through August 28, 2015. Additionally, Nadex added additional strike levels on a discretionary basis in its 5-Minute Intraday Currency Binary Contracts from September 1 through September 4, 2015.

Nadex plans to return to its regular listing schedule for all contracts on Tuesday, September 8, 2015.