Nadex Adds Discretionary Strike Levels on August 19, 20 and 21, 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 12.59, 12.63, and 12.65 due to volatility in the underlying markets upon which the Nadex contracts are based, Nadex added additional strike levels on a discretionary basis in its Daily US Tech 100 and Wall Street 30 Binary contracts on August 19. Additionally, Nadex added additional strike levels in its Daily US Tech 100, Wall Street 30, and US 500 Binary contracts on August 20, 2015. Finally, Nadex added additional strike levels on a discretionary basis in its Daily US Tech 100, Wall Street 30, US 500, and US SmallCap 2000 Binary contracts on August 21, 2015. Nadex returned to its regular listing schedule for all contracts on Monday, August 24, 2015.