Nadex Adds Discretionary Strike Levels on May 6 and 8, 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 12.63 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 on May 6, 2015, and returned to its regular listing schedule for these contracts on May 7, 2015. Additionally, Nadex added additional strike levels on a discretionary basis in its Daily US Tech 100 and Wall Street 30 Binary contracts on May 8, 2015. Nadex returned to its regular listing schedule for these contracts on May 11, 2015.

Pursuant to Commission Rule 40.6(b), Nadex plans to implement these Rule changes no earlier than May 26, 2015.