February 8, 2013 Immediately Effective NYSE Rule Change Click on the link below to view the SEC's notice of the rule change. NYSE: Notice of Filing and Immediate Effectiveness of Proposed Rule Change to Cease Operating New York Block Exchange and Contemporaneously Delete the Text of Rule 1600, Which Governs NYBX Functionality (See also: Exhibit 5) Tags Regulated Entities Broker-Dealers Jurisdiction US - Federal