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Direct Access Server

The Direct Access Server (DAS) interface provides participants with high performance order entry connectivity to the CHX Matching System.

DAS Advantages

Very low message latencies

Support for a wide array of Matching System order types

Cancel on disconnect or CHX system problem

Standard FIX 4.0 and 4.1 protocol

Ability to elect anonymity or attribution in the CHX Book Feed

The DAS does not support routing to any destination other than the CHX Matching System and as such order types that are eligible for routing are not supported. Participants requiring order entry of all order types should utilize CHX’s FIX Interface.

Specification

DAS Interface (PDF) updated January 2008

More Information

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