Introduction

This document describes the Cboe TCP PITCH protocol. The intended audience of this document is software developers of Cboe members who would like to use the TCP PITCH protocol to receive real-time full depth of book quotations and execution information direct from Cboe via a TCP/IP connection.

Note that this specification will be the standard TCP PITCH specification to be used for Cboe BYX Exchange, BZX Exchange, EDGA Exchange and EDGX Exchange platforms within the NY5 data center.

PITCH cannot be used to enter orders. For order entry, refer to the Cboe FIX Specification.

All visible orders and executions are reflected via the PITCH feed. Each PITCH message reflects the addition, deletion, or execution of an order in the system. All orders and executions are anonymous, and do not contain the member identity.

Cboe Auction Update and Auction Summary messages are available in support of the Cboe Opening, Closing, Halt and IPO Auctions on the BZX Exchange. Refer to Cboe Titanium U.S. Equities Auction Process Specification for more information on Cboe Auctions.