Matching System
- Order Types
- Direct Access Server
Market Data
- 50 Most Active Issues
- Historical Volume
Traded Issues
- Tape A
- Tape B
- Tape C
Trading Updates
- System Status
- CHX Notices
CHXConnect
- CHXConnect Issues
Shared Trading Space
Listing Program
Technical Documents
Execution Quality
Threshold Securities

Technical Documents

CHX FIX Interface (PDF) updated June 2008

FIX Interface – Drop Copy Execution (PDF) updated August 2007

FIX Interface -- Vendor Layoff Specification (PDF) updated August 2008

FIX Designated Routing (PDF) updated June 2007

DAS Interface (PDF) updated January 2008

CMS Designated Routing (PDF) updated June 2007

Link CMS Specification (PDF) updated January 2008

CHX Book Feed Interface (PDF) updated July 2008

Routing Users' Guide (PDF) updated December 2007

Off-Exchange Market Maker Open Order & Corporate Action Submission User Guide (PDF) updated October 2007

CHX Limit Order Reconciliation User Guide (PDF) updated August 2007

Attribution and Anonymity Order Entry Options (PDF) updated November 2007

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