Nadex Adds Additional Strike Levels on a Discretionary Basis in its US Indices Intraday Binary Contracts on October 20, 21, and 22, 2014

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 has added additional strike levels on a discretionary basis in its Intraday US Tech 100, US 500, Wall Street 30, and US SmallCap 2000 Binary Contracts with expirations each hour from 10:00AM to 4:00PM ET on October 20 and 21, 2013, and with expirations from 10:00AM to 2:00PM on October 22, 2014, due to volatility in the underlying markets upon which the Nadex contracts are based. In addition, Nadex amended the strike width of certain discretionary strikes, also due to volatility in the underlying market. The strike width was increased from 1.5 to 2 for all US 500 Intraday Binary Contracts for with expirations between 10:00AM and 4:00PM on October 20 and 21, and from 10:00AM – 1:00PM on October 22, 2014. The width returned to 1.5 for the 2:00PM expiration. The strike width was increased from 12 to 16 for all Wall Street 30 Intraday Binary Contracts for with expirations between 10:00AM and 4:00PM on October 20 and 21, and from 10:00AM – 1:00PM on October 22, 2014. The width returned to 12 for the 2:00PM expiration.

All contracts returned to their normal listing schedule and strike width beginning with the 3:00PM expiration on October 22, 2014.