Nadex Amends its Existing Strike Levels and Adds New Strike Levels in the Weekly Currency Binary Contracts and Adds its New EUR/JPY and GBP/JPY Variable Payout and Binary Contracts

Pursuant to Section 5c(c)(1) of the Commodity Exchange Act, and Commission Regulations §§40.2 and §40.6(a), Nadex amends its existing strike levels and adds new strike levels to its Weekly Currency Binary Contracts, set forth in rules 12.27, 12.29, 12.31, 12.33, 12.35, and 12.37, and adds its new EUR/JPY and GBP/JPY Variable Payout and Binary Contracts, represented in Rules 12.38 through 12.41. These rule amendments will be effective for the start of business on trading day Monday, March 28, 2011.