Symbol Mapping Message Fields

A Symbol Mapping message is used to map the 6 character multicast feed symbol field to an OSI symbol. These messages are sent continuously through the day at variable rates as bandwidth allows.

Table 1. Symbol Mapping
Field NameOffsetLengthType/(Value)Description
Length01BinaryLength of this message including this field
Message Type110x2E Symbol Mapping Message
Feed Symbol26Printable ASCIISymbol right padded with spaces
OSI Symbol821Printable ASCIIOSI Symbol
Symbol Condition291Alphanumeric
  • N=Normal
  • C=Closing Only
Underlying308AlphanumericUnderlying right padded with spaces.
Total Length=38 bytes
Cboe Titanium U.S. Options Opening Process Feed Specification - Symbol Mapping Message Fields | Cboe