System Overview

CBOE Streaming Market distributes index values. A feed is a set of one or more data channels. A channel consists of two Multicast groups in a primary/secondary architecture where the data is duplicated on the two Multicast groups for redundancy

Communication is one way only with no mechanism for retransmission. Messages are encoded using a mix of ASCII characters and binary data in the format defined in this document. The templates and message structures defined in this document are static and will not change over the course of the trading day, nor even in most software releases. Clients can expect sufficient advanced notice on any changes to these templates or message structures.