	Matching System Order Types Direct Access Server Market Data 50 Most Active Issues Historical Volume Traded Issues Tape A Tape B Tape C DSP Issues Trading Updates System Status CHX Notices Participant Services Notifications Customer Service Notifications Technical Notifications CHXConnect CHXConnect Issues Listing Program CHX-listed Issues Gov. Listing Standards Min. Listing Standards Unlisted Trading Privileges Technical Documents Execution Quality Threshold Securities Participant Services Application For Trading Permit Information Participants Participant Firms Institutional Brokers Market Makers Account Symbols Contact Participant Services Rules CHX Rules CHX Fee Schedule Rule Filings Market Regulation Surveillance Enforcement Compliance & Examinations National Market System Plans Comment Letters Information Memos Disciplinary Orders Arbitration Decisions Weekly Bulletins Legal Notices Information Circulars General History FAQ Executives Holiday Schedule Press Release Archives Governance Board Structure Types of Directors Current Directors Committees Careers Opportunities I-Board Stockholder Information Charter Bylaws CHX Holdings Governance Executives Board Annual Reports

2012

Number	Title
2012-05	Guidance Related to Error Report Documentation
2012-04	Orders Eligible for Entry to the CHX Matching System (ISO Cross, Midpoint Cross & Benchmark)
2012-03	Guidance related to Institutional Brokers’ Requests for Busts / Cancels (Stock Option Rule) and Away Trade Name Changes
2012-02	Orders Entry to the CHX Matching System (Benchmark)
2012-01	Orders Eligible for Entry to the CHX Matching System

Information Memos

2012
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