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CHX is pleased to announce the CHX Book Feed market data product is now available for subscription. 

The CHX Book Feed is a real-time low latency multicast broadcast of Matching System displayable orders and trade activity.  Full depth of book prices, participant order attribution and system and stock event messages are also disseminated by the CHX Book Feed.

How to Subscribe

All subscribers must complete the following:

CHX Book Feed License Agreement (PDF)

Technical Specifications

CHX Book Feed Interface (PDF) updated September 2012

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

Contact Information

Celeste Gianfrancisco
Manager, Member Services
Chicago Stock Exchange
440 S. LaSalle Street
Chicago, IL  60605
312-663-2038
cgfrancisco@chx.com