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Revision History

Document VersionDateDescription
1.0.005/11/17Initial version.
1.0.105/18/17Various minor updates and clarification added.
1.0.207/28/17
  • Added Multicast Ips/Ports for Certification environment.
  • Added Execution Id field to TOP Trade message.
1.0.308/08/17Added Multicast Ips/Ports for Production environment.
1.0.409/01/17
  • Added C2 Options references.
  • Updated description of TOP Trade message to describe behavior of Trade Condition field = X (Trade Break).
1.0.510/02/17Removed Trade Status code "A".
1.0.610/17/17
  • Cboe branding/logo changes.
  • Fixed incorrect Multicast IP for units 17-32 of EDD feed.
1.0.711/24/17
  • Added C2 Options Certification IP and Port information.
  • Added RUT, RUTW options (C2 Options Only) to distinct unit (unit 33).
1.0.812/11/17
  • Added Two Side Update Messsage for C2 Options only.
  • Corrected message type in Top Trade example.
  • Added Bit Fields to all Market Update messages and Market Snapshot messages. Effective 1/22/2018.
1.0.902/05/18Updated C2 Options IP and Port information.
1.0.1003/08/18Updated Unit Distribution ranges
1.0.1103/22/18Corrected GR MC Addresses for C2 C feed.
1.0.1203/23/18Unit Distribution ranges Effective Date updated to 4/14/18.
1.1.011/16/18Added support for C1 Options.
1.1.112/06/18Feature Pack 4 updates. Addition of new values O, A, C, F to Trade Condition field.
1.1.212/21/18Removed Floor Trade value from Top Trade message, Trade Condition field, as this was added in error. Added note indicating a Top Trade message can also be sent when an auction executes against a non-displayed order, such as a contra response.
1.1.302/05/19Removed references to cabinet size in messages, as C1 will not have an electronic book for Cabinet orders.
1.1.402/14/19Added certification IP port and unit distribution information.
1.1.503/05/19
  • Added matching engine unit 33 information in support of XSP trading on EDGX Options effective 04/08/19.
  • Added C1 primary data center rendezvous point IP address and C1 certification symbol ranges.
  • Order Count in a spin is always zero for this feed.
1.1.604/15/19
  • Added C1 production IP port and unit distribution.
  • Added DJX to C2 ME 33 in Unit/Product Distribution tables (effective 05/08/19).
1.1.705/08/19
  • Removed Trading Status field value S = Exchange Specific Suspension from the Trading Status message, as it was added in error.
  • Corrected C1 Production Gig-Shaped [CCD] and [CDD] source network IP addresses.
1.1.805/14/19
  • Added Composite Market Bid Price and Composite Offer Price fields to the Options Auction Update message and updated associated example message.
  • Added additional proprietary products to matching unit 31 in C1.
1.1.906/12/19Corrected certification and production C1 symbol range for units 9 and 20.
1.1.1008/02/19
  • Corrected Leg Count field description in Complex Instrument Definition Expanded message to indicate a total of 12 legs are allowed.
  • Added note indicating Options Auction Update message Opening Condition field value will always be zero. Updated example message.
1.1.1109/24/19Updated OSI Symbol example values in Symbol Mapping message type examples.
1.1.1210/31/19
  • Corrected UKXM symbol exclusion entry in Unit Distribution table.
  • Changed instances of Complex Instrument Definition to Complex Instrument Definition Expanded, as the former was deprecated 02/28/19.
  • Clarified description of Time message.
  • Added Options Trade Condition Codes section (effective 01/13/20).
1.1.1311/12/19Added note indicating GTH will be applicable for C1 only as GTH is being sunset for C2 and EDGX (effective 11/22/19).
1.1.1412/19/19Updated Options Trade Condition Codes by adding ‘O’ =Opening Trade and correcting field value description for ‘p’by removing "Includes Complex Auctions on the Floor". (Effective 01/13/20).
1.1.1501/06/20Updated Options Trade Condition Code t=Complex Floor Trade of Proprietary Products Marked as "Combo Order"
1.1.1601/08/20
  • Removed l=Complex Auction Against Single Legs(s) from Options Trade Condition Codes table.
  • Removed X=Trade Break from Trade Condition field and table as this value is not disseminated on Complex TOP.
1.1.1701/31/20
  • Corrected Unit Symbol Distribution tables to indicate QQQ is an exception for C1 Unit 20 as it has a dedicated location on Unit 28.
  • Updated Trade Condition values.
1.1.1808/27/20Added SPESG to the Unit Symbol Distribution tables for C1 unti 31 (effective 09/21/20).
1.1.1910/06/20Added SPESG to the Unit Symbol Distribution table Exclusion entries for C1.
1.1.2010/20/20Added XSP to the Unit Symbol Distribution tables for BZX and removed it from EDGX (effective 11/2/20).
1.1.2102/01/21
  • Added MRUT to the Unit/Product Distribution tables for C1 unit 31 (effective 3/01/21).
  • Added new updated Unit/Product Distribution tables with harmonized symbol ranges (effective 3/22/21).
1.1.2203/11/21Updated the Unit Symbols Distribution Exceptions entries. (effective 3/22/21).
1.1.2303/25/21
  • Added Binary Date field type to Section 2.2 - Data Types (effective 10/10/21 09/27/21 Q3 2021).
  • Added new Time Reference message (effective 10/10/21 09/27/21 Q3 2021).
  • Added EpochTime field to Time message (effective 10/10/21 TBD 09/27/21 Q3 2021).
  • Updated description ofAuction Typefield on Options Auction Updateand Auction Summarymessages (effective TBD 09/27/21 Q3 2021).
  • Updated description of GTH Trading Status field on Trading Status message (effective 01/24/22 TBD 09/27/21 Q3 2021).
1.1.2405/13/21
  • Updated Curb session effective date to 02/07/22 TBD 09/27/21.
  • Added v=Extended Hours Trade Trade Condition code (effective 01/24/22 TBD 09/27/21).
1.1.2506/08/21Noted in Complex Instrument Definition Expanded message that a total of 16 legs are allowed (effective 08/25/21 08/09/21).
1.1.2606/15/21Updated effective date for expanded GTH session to 11/21/21.
1.1.2708/02/21Updated effective date for the Complex Instrument Definition Expanded message that a total of 16 legs are allowed (effective 08/25/21).
1.1.2808/30/21Updated effective date for Curb session, v=Extended Hours Trade Trade Condition code, updates to Auction Type field and GTH Trading Status field to (effective 01/24/22 TBD).
1.1.2909/09/21
  • Added Trading Status field value L=Curb Trading (C1 Only) for Trading Status messages (effective 01/24/22 TBD).
  • GTH Trading Status field will not be used for Curb session.
  • Updated description of Auction Type field on Options Auction Update and Auction Summary messages (effective TBD).
1.1.3009/30/21
  • Updated effective date for new Time Reference message (C1 Only), EpochTime field to Time message (C1 Options Only), and Binary Date field type to Section 2.2 - Data Types to 10/10/21.
  • Added new section 1.2 - '24x5 Feed Hours and System Restart (C1 Only)' (effective 10/10/21).
1.1.3111/04/21
  • Corrected example Time message values.
  • Updated Curb session effective date to 02/07/22.
  • Updated effective date for v=Extended Hours Trade Trade Condition code to 01/24/22.
  • Updated effective date for Trading Status field value ‘ L=Curb Trading' to 01/24/22.
  • Removed note indicating AuctionType value O will be sent prior to Curb session. This value will only be sent for the RTH Opening.
1.1.3201/03/22Added m=Complex Floor Trade Against Single Leg(s), p=Complex with Stock Floor Trade, and " t=Complex Floor Trade of Proprietary Products Marked as ‘Combo Order’" Trade Condition Codes.
1.1.3302/02/22Added NANOS to the C1 unit 32 Unit/Product Distribution tables (effective 03/14/22).
1.1.3403/01/22Removed XSP from the BZX unit 31 Unit/Product Distribustion tables.
1.1.3511/07/22Moved XSP to the C1 unit 32 Unit/Production Distribution table (effective 12/04/22).
1.1.3603/30/23Clarified RUT is on BZX and C2 Unit 31.
1.1.3701/29/24Added MXACW, MXUSA, and MXWLD to the C1 unit 31 Unit/Product Distribution tables (effective 03/18/24).
1.1.3804/02/24Added Exchange Designated Complex Instrument Definition message (effective 06/24/24).
1.1.3904/08/24Added additional detail to Exchange Designated Complex Instrument Definition message (effective 06/24/24).
1.1.4004/24/24Clarified Exchange Designated Complex Instrument Definition message is C1 only (effective 06/24/24).
1.1.4106/07/24Added a two-byte Reserve field to the Exchange Designated Complex Instrument Definition example message.
1.1.4207/22/24Effective 08/26/24, GTH will be extended until 9:25 a.m. ET (C1 only).
1.1.4311/22/24Added CBTX, CBTXW, MBTX, and MBTXW to the C1 unit 31 Unit/Product Distribution tables (effective 12/02/24).
1.1.4412/13/24Added new Unit/Product Distribution for Units 1-30 (effective 03/31/25).
1.1.4501/15/25

Updated with Cboe Titanium branding.

1.1.4603/25/25
  • Noted in Spin Servers: a Time message will be sent as the last message in a Spin if the last Time message sent on a Spin is older than the last received time from the internal market data producers.
  • Added SPEQX to C1 unit 31 unit/product distribution (effective 04/14/25).
1.1.4707/08/25Updated Time Offset data type. Effective 09/08/25, Time Offset fields will be populated to nanosecond precision.
1.1.4807/24/25Specification updated to indicate complex functionality is available for all Cboe Options Exchanges, with BZX Options complex functionality effective on 10/13/25.
1.1.4908/13/25Removed unit 35 from BZX Options Address/Unit Distribution Secondary Dataset Table.
1.1.5010/20/25
  • Added MGTN and MGTNW to unit 31 in US Options Unit/Product Distribution and excluded MGTN and MGTNW from unit 14 (effective 11/17/25).
  • Updated Trading Status Message Fields to remove references to specific products traded during Curb and GTH sessions, replacing it with "Curb-eligible Products" and "GTH-eligible Products", respectively.
1.1.5111/06/25Updated MGTN and MGTNW effective date to TBD.
1.1.5211/18/25Updated MGTN and MGTNW effective dates to 12/08/25.
1.1.5301/12/26Updated 24x5 Feed Hours and System Restart to document the new time at which persisted orders are added back into the order book (effective 02/02/26).
1.1.5404/01/26
  • Removed references to MXEA, MXEF, MXACW, MXUSA, and MXWLD.
  • Updated Time description in Time and Time Reference messages.
  • Added XSPBW to C1 unit 32 Unit/Product Distribution tables (effective 06/15/26 06/01/26).
1.1.5504/15/26Updated Trading Status Message Fields to reflect planned expansion of C1 trading hours for select equity options, including the addition of a morning Global Trading Hours (GTH) session and afternoon Curb session, subject to regulatory review (effective 07/13/26 08/17/26 TBD).
1.1.5605/14/26
  • Updated XSPBW effective date to 06/15/26.
  • Updated U.S. Options Unit/Product Distribution to include DJXW (effective 05/18/26).
1.1.5706/12/26Updated planned expansion of C1 trading hours for select equity options to 08/17/26.
1.1.5807/21/26Removed VIX and VIXW exclusion from unit 23 and added VIX and VIXW exclusion to unit 24 U.S. Options Unit/Product Distribution tables.
1.1.5908/10/26Updated planned expansion of C1 trading hours for select equity options to TBD.
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