Trading Status Message Fields

The Trading Status message is used to indicate the current trading status of a security. A Trading Status message will be sent whenever a security’s trading status changes.

A haltStatus of S will be implied at system startup. T will be sent as securities are available for trading. A will be distributed when orders can be accepted for queuing in preparation for the market open.

Table 1. Trading Status Message Fields
Field NameJSONValueDescription
messageTypem‘t’ Trading Status Message
timestamptNumeric
  • Milliseconds since midnight ET (BZX, EDGX), or
  • Milliseconds since midnight London (BXE, CXE, DXE)
symbolsAlphaSymbol
haltStatushAlpha
  • A = Accepting Orders for Queuing
  • H = Halted
  • Q = Quote-Only (Cboe Listings)
  • S = Exchange Specific Suspension
  • T = Trading
regShoActionrAlphanumeric
  • 0=No price test in effect
  • 1=Reg SHO price test restriction in effect
Cboe Titanium Cboe Global Cloud Feed Specification - Trading Status Message Fields | Cboe