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Revision History

Document VersionDateDescription
1.0.011/29/2017Initial version.
1.0.112/11/2017
  • Corrections to Two Side Update (Long) example message.
  • Corrected message type for Top Trade example message.
1.1.001/29/2018Added BZX and EDGX Options Top feeds. Effective in certification on 02/02/18 and production 03/09/18.
1.1.102/05/2018
  • Added C2 Options Production IP and Port information.
  • Improved distribution of Symbol Mapping Messages Effective 3/2/2018.
1.1.202/27/2018Added IP Addresses for the BZX and EDGX Options exchanges for NY5 and CH4.
1.1.302/28/2018Corrected BZX Options Ips and Ports.
1.1.403/08/2018Updated Unit Distribution ranges.
1.1.503/14/2018Corrected the name of the EDGX Options Feed to EAT, EBT and EET.
1.1.603/23/2018Unit Distribution ranges Effective Date updated to 4/14/18.
1.1.706/21/2018
  • Corrected Trading Status example message.
  • Order Count on Spin Response is always zero.
1.1.808/15/18Updated BZX Options Unit Distribution ranges to support RUT on new unit 33.
1.1.908/21/18Removal of Customer Indicator for C2 Options effective 08/31/18.
1.2.011/16/18Added support for C1 Options.
1.2.112/06/18Added notes identifying Feature Pack 4 updates.
1.2.212/21/18Removed Late Trade and Floor Trade values from Top Trade message, Trade Condition field, as these were added in error. Added note of clarification indicating a Top Trade message can also be sent when an auction executes against a non-displayed order, such as a contra response.
1.2.302/05/19Removed Bit 4 - Cabinet Order information from relevant Single Side Update and Two Side Update messages, as C1 will not have an electronic book for Cabinet orders.
1.2.402/14/19Added certification IP addresses and unit distribution information.
1.2.503/05/19
  • Added matching engine unit 33 information in support of XSP trading on EDGX Options effective 04/08/19.
  • Added C1 certification primary data center rendezvous point IP address and C1 Certification symbol ranges.
1.2.604/15/19
  • Added Production IP addresses for C1 Options.
  • Added DJX to C2 ME 33 in Unit/Product Distribution tables (effective 05/08/19).
1.2.705/01/19Added notes indicating Auction Summary, Options Auction Update, and Width Update messages will be disseminated for C2 and EDGX options, effective with C1 Feature Pack 7.
1.2.805/08/19
  • Removed Trading Status field value S = Exchange Specific Suspension from Trading Status message, as this was added in error.
  • Corrected C1 Production Gig-Shaped [CAT] and [CBT] source network IP addresses.
  • Corrected description of Width Update message to indicate that message is only sent in the event that baseline MCW and OCW values are modified from their original state.
  • Added Customer book type to single and two side updates to allow for supplying the top of Customer book.
1.2.905/14/19
  • Updated Options Auction Update message with Opening Condition = C (Crossed Composite Market), and added Composite Market Bid Price and Composite Market Offer Price fields.
  • Added new SOQ Strike Range Update message.
  • Updated example for Options Auction Update and added example for SOQ Strike Range messages.
  • Added additional proprietary products to matching unit 31 in C1.
1.2.1005/20/19Added Constituent Symbol Mapping message with example.
1.2.1106/12/19Corrected certification and production C1 symbol range for units 9 and 20.
1.2.1208/02/19Added notes indicating Options Auction Update message Opening Condition field values ‘B’ and ‘S’ are C1 Only.
1.2.1309/24/19Updated OSI Symbol example values in Symbol Mapping and Constituent Symbol Mapping message type examples.
1.2.1410/31/19
  • Corrected UKXM symbol exclusion entry in Unit Distribution table.
  • Clarified description of Time message.
  • Added Options Trade Condition Codes section (effective 1/13/20).
1.2.1511/12/19Added note indicating GTH will be applicable for C1 only as GTH is being sunset for C2 and EDGX (effective 11/22/19).
1.2.1612/19/19Updated 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).
1.2.1701/06/20Updated Options Trade Condition Code t=Complex Floor Trade of Proprietary Products Marked as "Combo Order"
1.2.1801/08/20Removed l=Complex Auction Against Single Legs(s) from Options Trade Condition Codes table .
1.2.1901/15/20Added note indicating Options Auction Update and Auction Summary will be supported on BZX in support of new opening process (effective 01/30/20).
1.2.2001/21/20Added note to Options Trade Condition Code table indicating the value i=Complex Floor Trade will be deprecated effective 1/27/20. Upon the effective date all complex floor executions will be reported as condition ‘m’.
1.2.2108/27/20
  • Corrected Unit Symbol Distribution tables to indicate QQQ is an exception for C1 Unit 20 as it has a dedicated location on Unit 28.
  • Added SPESG to the Unit Symbol Distrbiution tables for C1 unti 31 (effective 9/21/20).
1.2.2210/05/20Added SPESG to the Unit Symbol Distribution table Exclusion entries for C1.
1.2.2310/20/20Added XSP to the Unit Symbol Distribution tables for BZX and removed it from EDGX (effective 11/2/20).
1.2.2410/27/20Corrected description of GTH Trading Status to include value of ‘R’ as this value is currently being disseminated.
1.2.2502/01/21
  • 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).
1.2.2603/11/21Updated the Unit Symbols Distribution Exceptions entries (effective 3/22/21).
1.2.2703/25/21
  • Added Binary Date field type to Section 2.2 - Data Types (effective 10/10/21 TBD 09/27/21 Q3 2021).
  • Added new Time Reference message (effective 10/10/21 TBD 09/27/21 Q3 2021).
  • Added EpochTime field to Time message (effective 10/10/21 TBD 09/27/21 Q3 2021).
  • Updated description of Auction Type field on Options Auction Update and Auction Summary messages (TBD 09/27/21 Q3 2021).
  • Updated description of GTH Trading Status field on Trading Status message (effective 02/07/22 TBD 09/27/21 Q3 2021).
1.2.2805/06/21Added u=Multilateral Compression Trade of Proprietary Products to Options Trade Condition Codes (effective TBD 07/06/21)
1.2.2905/13/21
  • 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).
1.2.3006/15/21Updated GTH extended session effective date to 11/21/21.
1.2.3106/18/21Updated Cboe Compression Service Multilateral Compression effective date to TBD 08/12/21.
1.2.3207/28/21Updated Cboe Compression Service Multilateral Compression effective date to 08/12/21.
1.2.3308/27/21Updated Curb session effective date to 02/07/22 TBD.
1.2.3409/09/21
  • 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 ofAuction Typefield on Options Auction Updateand Auction Summarymessages (effective TBD).
1.2.3509/30/21
  • 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).
1.2.3611/04/21
  • 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.
1.2.3702/02/22Added NANOS to the C1 unit 32 Unit/Product Distribution tables (effective 03/14/22).
1.2.3803/01/22Removed XSP from the BZX unit 31 Unit/Product Distribution tables.
1.2.3911/07/22Moved XSP to the C1 unit 32 Unit/Product Distribution table (effective 12/04/22).
1.2.4003/30/23Clarified RUT is on BZX and C2 Unit 31.
1.2.4101/29/24Added MXACW, MXUSA, and MXWLD to the C1 unit 31 Unit/Product Distribution tables (effective 03/18/24).
1.2.4207/22/24Effective 08/26/24, GTH will be extended until 9:25 a.m. ET (C1 Only).
1.2.4311/22/24Added CBTX, CBTXW, MBTX, and MBTXW to the C1 unit 31 Unit/Product Distribution tables (effective 12/02/24).
1.2.4412/13/24Added new Unit/Product Distribution for Units 1-30 (effective 03/31/25).
1.2.4501/15/25

Updated with Cboe Titanium branding.

1.2.4603/25/25
  • 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).
1.2.4707/08/25Updated Time Offset data type. Effective 09/08/25, Time Offset fields will be populated to nanosecond precision.
1.2.4808/21/25Updated the footnote within Options Trade Conditions Codes to indicate the Trade Condition values of X = Trade Break, O=Opening Trade, and K=Cabinet Trade will not be sent to OPRA.
1.2.4910/20/25
  • Added MGTN and MGTNW to unit 31 in US Options Unit/Product Distribution and excluded MGTN and MGTNW from unit 14 (effective 12/08/25 TBD 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.
1.2.5011/06/26Updated effective date for MGTN and MGTNW to TBD.
1.2.5111/18/25Updated effective dates for MGTN and MGTNW to 12/08/25.
1.2.5201/12/26Updated 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).
1.2.5303/09/26Updated Introduction, Bandwidth Recommendation, and Limitations/Configurations to indicate the Multicast TOP feed bandwidth will increase from 1Gb/s to 2Gb/s (effective 05/04/26).
1.2.5404/01/26
  • 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).
1.2.5504/15/26Updated 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).
1.2.5605/14/26
  • Updated XSPBW effective date to 06/15/26.
  • Updated U.S. Options Unit/Product Distribution to include DJXW (effective 05/18/26).
1.2.5706/12/26Updated planned expansion of C1 trading hours for select equity options to 08/17/26.
1.2.5807/21/26Removed VIX and VIXW exclusion from unit 23 and added VIX and VIXW exclusion to unit 24 U.S. Options Unit/Product Distribution tables.
1.2.5908/10/26Updated planned expansion of C1 trading hours for select equity options to TBD.
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Cboe Titanium U.S. Options Multicast TOP Specification - Revision History | Cboe