Nadex Introduces New Binary and Variable Contracts and Amends Certain Existing Binary Contracts

Pursuant to Section 5c(c)(1) of the Commodity Exchange Act and Commission Regulations §§40.2 and 40.6(a), Nadex, formerly HedgeStreet, amends the payout criteria and other provisions for its previously listed Soybean and Corn Binary Contracts (as represented in Rule 12.41 and 12.42, respectively) and adds terms and conditions for new Soybean and Corn Variable Payout Contracts (represented in new Rules 12.84 and 12.85, respectively). Additionally, Nadex adds the terms and conditions of the Nadex Wall Street 30, US Tech 100, and US 500 Binary and Variable Payout Contracts as represented in the following new Rules:

RULE 12.86 WALL STREET 30 VARIABLE PAYOUT CONTRACTS

RULE 12.87 US TECH 100 VARIABLE PAYOUT CONTRACTS

RULE 12.88 US 500 VARIABLE PAYOUT CONTRACTS

RULE 12.89 WALL STREET 30 BINARY CONTRACTS

RULE 12.90 US TECH 100 BINARY CONTRACTS

RULE 12.91 US 500 BINARY CONTRACTS

These rule amendments and additions are effective at the start of business on Monday, June 22, 2009.