Nadex Amends its Fee Schedule for API Members

Pursuant to Section 5c(c)(1) of the Commodity Exchange Act, and Commission Regulation §40.6(a), Nadex amends its Fee Schedule to provide a monthly volume-based rebate to Members connecting to the Exchange via API connection, who trade more than 5,000 Bull Spread contracts during the one-month period. This self-certification was submitted to Commodity Futures Trading Commission on July 27, 2011. Pursuant to the 10-day review period, these amendments will be effective as of August 11, 2011.