Nadex Adds Discretionary Strike Levels for the Week of August 1, 2016

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 Nadex added strike levels on a discretionary basis in its Daily Bitcoin Binary contracts on August 1, 2, and 3rd, and returned to its regular listing for these contracts on August 4, 2016. Additionally, due to volatility in the underlying markets, Nadex added discretionary strike levels in its Daily US Tech 100 Binary contracts on August 2, returned to its regular listing schedule for these contracts no August 3, but again added discretionary strike levels on August 5, 2016. Nadex also added discretionary strike levels in its Daily GBP/JPY and GBP/USD Binary contracts on August 4, 2016 and returned to its regular listing schedule for these contracts on August 5. Finally, Nadex added additional strike levels on a discretionary basis in its Daily Gold and Silver Binary contracts on August 5, 2016. Nadex returned to its regular listing schedule for all contracts on August 8, 2016. The specific added discretionary strike levels are attached in Exhibit A.

Additionally, Nadex amended the strike width for its 5-Minute Intraday Currency Binary contracts throughout the week of August 1. On Monday morning, trade date August 1, 2016, the strike level interval width was increased from 0.0003 to 0.0006 for the 5-Minute Intraday GBP/USD beginning with the 11:40am ET expiration time and continuing through the 4:55pm ET expiration. This strike width was also increased for the 6:05pm ET expiration at the open of trade date August 2, but returned to normal for the 6:10pm ET expiration. The strike with for the 5-Minute GBP/USD Binary contracts was increased from 0.0003 to 0.0006 on trade date August 2, 2016 beginning with the 10:25am ET expiration and continuing through the 4:55pm ET expiration, and again for the 6:05pm ET expiration at the open of trade date August 3, 2016. The strike width was increased on the 5-Minute Intraday GBP/USD Binary contracts on trade date August 3, 2016 from 0.0003 to 0.0006 beginning with the 9:30am ET expiration and continuing through the 4:55pm ET expiration. The width was again increased on trade date August 4, 2016 beginning with the 9:25am ET expiration time and continuing through the 4:55pm ET expiration, and again with the 6:05pm ET expiration at the open of trade date August 5. Finally, on trade date August 5, the strike width for the 5-Minute Intraday GBP/USD Binary contracts was increased from 0.0003 to 0.0006 beginning with the 9:40am ET expiration and continuing through the 3:55pm ET expiration, and the strike width for the 5-Minute Intraday USD/JPY Binary contracts increased from 0.03 to 0.05 beginning with the 9:40am ET expiration and continuing through the 3:55pm ET expiration.