Nadex Adds Discretionary Strike Levels for the Week of July 18, 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 2-Hour Intraday GBP/JPY and USD/JPY Binary contracts on July 18, 2016 and in its Daily Gold, Silver, and US Tech 100 Binary contracts on July 20, 2016. These 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 July 18. On Sunday evening, trade date July 18, the strike level interval width was increased from 0.0003 to 0.0006 for the 5-Minute Intraday GBP/USD, and from 0.03 to 0.05 for the USD/JPY Binary contracts beginning with the 9:50am ET expiration time, but returned to normal for the open of trade day July 19.. On July 19, the strike interval width for the GBP/USD 5-Minute Intraday Binary contracts was increased from 0.0003 to 0.0006 beginning with the 9:45am ET expiration. The strike interval width for the USD/JPY 5-Minute Intraday Binary contracts was increased from 0.03 to 0.05 beginning with the 11:25am ET expiration. Both the GBP/USD and USD/JPY returned to normal after the open of trade date July 21 for the 6:10pm ET expiration. On trade date July 21, beginning with the 9:45am ET expiration the 5-Minute GBP/USD Binary width was increased from 0.0003 to 0.0006. Beginning with the 9:50am ET expiration the 5-Minute AUD/USD Binary width increased from 0.0003 to 0.0004 and the USD/JPY width increased from 0.03 to 0.05. Beginning with the 9:55am ET expiration, the 5-Minute EUR/USD Binary width increased from 0.0003 to 0.0004. All contracts returned to normal for the open of trade date July 22. Finally, beginning with the 9:40am ET expiration on July 22, the width for the 5-Minute GBP/USD Binary contract increased from 0.0003 to 0.0006, and in the USD/JPY from 0.03 to 0.05. All contracts returned to normal beginning with the 2:15pm ET expiration time.

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