Nadex Updates Rule Language Regarding Market Makers

Pursuant to Section 5c(c)(1) of the Commodity Exchange Act and Commission Regulation 40.6(a), Nadex amends its Rules to update language regarding Market Makers. The amendments to Nadex’s existing rules address the following provisions:

RULE 4.1 REGISTRATION OF MARKET MAKERS RULE

4.2 MARKET MAKER REPRESENTATIVES RULE

4.3 APPOINTMENT OF MARKET MAKERS RULE

4.4 BENEFITS OF BECOMING A MARKET MAKER RULE

4.5 OBLIGATIONS OF MARKET MAKERS

These rule amendments are effective at the start of business on Monday, July 6, 2009