| April 4, 2014 | - Version 2.0.0
- First Version 2 release.
|
| May 1, 2014 | - Version 2.0.1
- Retail attribution value changed from RTL to RETL.
|
| June 4, 2014 | - Version 2.0.2
- Removed references to CBSX and NSX.
- Retail attribute value changes from RETL to RTAL.
- Corrected length of NumberOfParamGroups to be one byte (not two bytes).
- Fixed naming inconsistency of AttributedQuote sometimes being called AttributedOrder.
- Added send peg restatements and retail order default port attributes.
- Noted that StopPx may be modified.
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| July 1, 2014 | - Version 2.0.3
- Corrected ExecInst to note that Midpoint Discretionary Order will only be available on EDGA.
- Corrected Cancel on Disconnect options
|
| July 3, 2014 | - Version 2.0.4
- Added field descriptions for FeeCode and EchoText.
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| July 7, 2014 | - Version 2.0.5
- Removed all return bits from User Modify Rejected V2 messages. No optional return fields are allowed.
- Corrected a number of optional return bits.
- Added RoutingInst, RoutStrategy, RouteDeliveryMethod, and ExDestination as optional return bits (byte 8).
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| July 9, 2014 | - Version 2.0.6
- Corrected instances where ContraCapacity and CorrectedSize may be requested as optional return fields.
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| August 12, 2014 | - Version 2.0.7
- Added RestatementReason value of S (size reduced due to SWP).
- The "Default Price Sliding" value incorrectly indicated H for EDGX instead of the correct value of P.
- Corrected description of Market Peg.
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| August 15, 2014 | - Version 2.0.8
- Removed text which indicated version 2 was not yet available as it is now live.
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| August 22, 2014 | - Version 2.0.9
- Removed ContraCapacity which is not available in US Equities.
- Added Super Aggressive When Odd Lot RoutingInst value.
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| August 26, 2014 | - Version 2.0.10
- Added Reason Code of w (Would Remove on Unslide).
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| August 27, 2014 | - Version 2.0.11
- Corrected stages of RMPT route strategy.
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| September 8, 2014 | - Version 2.0.12
- Corrections in allowed return bitfields.
- Updated Options-specific fields to match latest version of Options specification.
- Removed ContraCapacity from allowed return bitfields.
- Removed ContraBroker from List of Optional fields.
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| September 9, 2014 | - Version 2.0.13
- Removed AccessFee from
Order Execution V2 allowed return bitfields. - Removed Options-specific Bulk Order Acknowledgment V2 message fromSection 6.
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| September 11, 2014 | - Version 2.0.14
- Correction: ExtExecInst wasn’t marked as allowed for US Equities
New Order -
V2.
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| September 29, 2014 | - Version 2.0.15
- Corrections: ROUC routing strategy will only be supported on EDGA/EDGX. Modified description of ROLF strategy to be Book + IOC LavaFlow.
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| October 10, 2014 | - Version 2.0.16
- Clarified ability to reuse ClOrdId with
Modify Orders when daily limit trading risk controls are enabled.
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| November 13, 2014 | - Version 2.0.17
- Updated for EDGX Options.
- Added new fields TargetPartyID and MarketingFeeCode. Updated descriptions to note which fields are BZX Options or EDGX Options specific.
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| November 17, 2014 | - Version 2.0.18
- No functional changes.
- Clarified that LavaFlow’s representation in ExDestination is l which is a lowercase L.
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| December 2, 2014 | - Version 2.0.19
- MaxRemovePct will now be allowed on EDGA and EDGX, but must always be 0.
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| December 19, 2014 | - Version 2.0.20
- Correction for DiscretionAmount. The documentation incorrectly indicated this is a Signed Binary field when it is actually a Binary field.
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| January 8, 2015 | - Version 2.0.21
- Corrected
Order Execution V2 return bitfields to note that SubLiquidityIndicator is not allowed—it’s already available in the message body. - Minor correction of PreventMatch text (no functional change).
- On DisplayIndicator, noted that I is implied on Midpoint Peg orders only
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| January 29, 2015 | - Version 2.0.22
- Removed references to ROLF and LavaFlow.
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| March 25, 2015 | - Version 2.0.23
- Corrected TRIM RoutStrategy descriptions.
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| May 19, 2015 | - Version 2.1.0
- Functionality modifications to EDGX to align with the other Bats equity exchanges:
- (effective 7/6/2015) EDGX Midpoint Match translated to Midpoint Peg No Lock, EDGX Hide Not Slide translated to Display Price Sliding, and EDGX price sliding default changes to Display Price Sliding.
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| June 10, 2015 | - Version 2.1.1
- Adjusted wording for ExecInst value of o.
- Added Reason Code value of T.
- Corrected message length of example New Order V2 message.
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| July 6, 2015 | - Version 2.1.2
- Adjustments now that EDGX functionality changes are live.
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| July 27, 2015 | - Version 2.1.3
- Noted that RoutStrategy value of ROOC will only be available on BZX and EDGX effective 8/10/2015. Noted that ROOC orders with ExecInst set to c can route to halt auctions.
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| July 27, 2015 | - Version 2.1.4
- Added values to ExDestination and ContraBroker in anticipation of NSX reactivation on 8/31/2015.
- Added Routing Retail Indicator port attribute (EDGX only). Effective 9/10/2015.
- Added Single Order ADV Check port attribute. Effective 8/14/2015.
- Updated description of Fat Finger Protection port attribute.
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| August 10, 2015 | - Version 2.1.5
- Added EffectiveTime (effective 9/28/2015).
- Added Duplicative Order Protection port attributes.
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| October 26, 2015 | - Version 2.1.6
- Added port attribute "All Routable to Halt Auction".
- Updated RoutStrategy description of ROCO and ROBB.
- Updated effective date for EffectiveTime.
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| November 23, 2015 | - Version 2.1.7
- Added ALLB value to RoutStrategy.
- Updated effective date for "All Routable to Halt Auction."
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| February 17, 2016 | - Version 2.1.8
- Updated for new branding.
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| February 25, 2016 | - Version 2.1.9
- Added new RestatementReason value of P.
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| March 23, 2016 | - Version 2.1.10
- Updated description of RoutStrategy to state that routable ISOs must be sent using DIRC. Updated the minimum value of "Reject Orders on DROP Port Timeout" to be 0 seconds.
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| April 12, 2016 | - Version 2.1.11
- Added three TimeInForce values to support addition of Early Trading Session.
- Added "Allow Early Trading Session" port attribute. Added Hours of Operation section. All effective 5/23/2016.
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| April 14, 2016 | - Version 2.1.12
- Removed some route strategies. Removal of IOCM and ICMT effective May 5, 2016 on BYX Exchange and May 6, 2016 on EDGA Exchange. Removal of TRIM3 and TRIM3- effective May 6, 2016 on BZX Exchange.
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| April 25, 2016 | - Version 2.1.13
- Clarified when "Fat Finger Protection" is applied. Clarified wording for "Early
- Trading Session Opt-Out."
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| July 13, 2016 | - Version 2.1.14
- Added new ExecInst value of y (Trade at ISO).
- Added new ExDestination value of I (IEX, effective 9/2/2016) and ContraBroker
- value of IEX (effective 8/1/2016).
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| August 8, 2016 | - Version 2.1.15
- Updated effective date for supporting ExDestination of IEX to 8/19/2016.
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| January 24, 2017 | - Version 2.1.16
- Added IEX Midpoint routing to RoutStrategy.
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| March 2, 2017 | - Version 2.1.17
- Add new field type Date.
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| March 14, 2017 | - Version 2.1.18
- Add descriptions of port attributes "Allow Test Symbols Only", "Port Order Rate Threshold", and "Symbol Order Rate Threshold"
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| March 23, 2017 | - Version 2.1.19
- Added RMPL Route Strategy to RoutStrategy.
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| May 17, 2017 | - Version 2.1.20
- Added description of port attribute "Cancel on ME Disconnect"
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| June 14, 2017 | - Version 2.1.21
- Added IEX to the TRIM, TRIM-, TRIM2 and TRIM2- RoutStrategy venues. Added
- new RoutingInst value of N (Non-Displayed Swap) (effective 7/21/2017).
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| August 10, 2017 | - Version 2.1.22
- Added description of port attribute "Default Routing Instruction (Hidden Order Override)"
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| October 17, 2017 | - Version 2.1.23
- Cboe rebranding/logo changes.
- Removed X=Locked in cross RestatementReason as this is specific to European markets and was previously deprecated.
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| October 25, 2017 | - Version 2.1.24
- Corrected various spelling errors, field name and case inconsistencies.
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| December 4, 2017 | - Version 2.1.25
- Updated TimeInForce requirements for Displayed Primary Peg with non-aggressive PegDifference. Effective 12/15/17.
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| January 24, 2018 | - Version 2.1.26
- Reworked the Modify Order message to clarify when an order loses time priority and to harmonize with FIX
- Post to Away orders must be limit orders.
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| February 2, 2018 | - Version 2.1.27
- Added port attribute "Reject Market Orders Without NBBO" (effective 2/16/18).
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| March 20, 2018 | - Version 2.1.28
- Updated the market centers that support Post to Away in ExDestination.
- Added port attribute "Default True MinQty" (effective 4/18/18).
|
| March 27, 2018 | - Version 2.2.0
- Added Cboe Market Close (CMC) functionality (effective TBD).
- Clarified that a zero MaxFloor (111) on a Modify Order message will be ignored.
|
| May 08, 2018 | - Version 2.2.1
- LastShares will be used to report the number of shares cancelled on Cboe Market Close restatements.
- LeavesQty will be used for matched shares on CMC restatements.
- Updated description of Aggressive and Super Aggressive RoutingInst values.
- Added 15th return byte to all messages from Cboe to Member.
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| May 11, 2018 | - Version 2.2.2
- Updated description on MinQty behavior and changes related to the release of Enable True MinQty port attribute.
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| June 08, 2018 | - Version 2.2.3
- Updated byte 15 Return Bitfields. None are applicable to US Equities.
- Defined Binary Signed Price data type, which is used for PegDifference.
- Added support for RoutingInst=N (NDS) on BYX, BZX, and EDGA (effective 6/14/18).
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| August 23, 2018 | - Version 2.3.0
- Added support for Equities Purge Ports (effective 10/1/18). Added Purge Orders, Mass Cancel Acknowledgment, and Purge Rejected message types and associated optional bitfields. Added definitions for MassCancelID, MassCancelInst, RiskGroupID, RiskGroupIDCnt, and RiskReset fields.
- Updated Trading Sessions to reflect that BZX is open until 8:00 p.m. ET.
- Added MDO ExecInst to EDGX effective 10/3/18.
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| August 27, 2018 | - Version 2.3.1
- Defined RiskGroupID Optional Field (effective 10/1/18).
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| September 13, 2018 | - Version 2.3.2
- Added CLNK as new value for RoutStrategy and h=HRT Execution Services LLC as new value for ExDestination . Effective 9/24/18 for EDGA only.
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| October 2, 2018 | - Version 2.3.3
- Removed Trade At ISO order due to Tick Pilot Sunset.
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| March 4, 2019 | - Version 2.3.4
- Updated trading session information to reflect extension of BYX Post-Market Session hours to 8:00 p.m. ET.
- Regarding
Login Response, clarified that while a subset of units can be provided in the Login Request, all units will be provided in the Login Response. - Added l=Virtu VEQ Link and v=Virtu VEQ as new values for ExDestination. Effective 3/8/19 for EDGA only.
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| March 22, 2019 | - Version 2.3.5
- Updated ROBB and ROCO routing strategies on EDGA. Updated TRIM and TRIM- on BYX and BZX. RDeprecated TRIM2 and TRIM2- on BZX. Deprecated SWPB routing strategy for all exchanges (effective 05/01/19).
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| June 25, 2019 | - Version 2.3.6
- Added ‘X’ value to ExtExecInst optional field to support Retail Priority on EDGX (effective TBD).
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| August 7, 2019 | - Version 2.3.7
- Corrected MessageType hexadecimal value to 28 in Order Restated message example.
- Changed Return Bitfield EquityNBBOProtect to "Reserved".
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| August 23, 2019 | - Version 2.3.8
- Updated Order Modified Return Bitfield to indicate Symbol field on second byte can be specified for a message.
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| October 11, 2019 | - Version 2.3.9
- Updated effective date for ExtExecInst optional field value "X - Retail Priority Order". Effective on EDGX only 11/1/19.
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| November 7, 2019 | - Version 2.3.10
- Added note indicating that the ‘at’ symbol and double quote characters are not permitted in the ClOrdID field (effective 01/13/20).
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| January 14, 2020 | - Version 2.3.11
- Added reason code F=Failed to quote .
- Added note indicating the specific reason code text the system delivers may vary from the text listed, to provide clarification of the reject reason.
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| January 17, 2020 | - Version 2.3.12
- Added note indicating routing strategy CLC will be replaced with DRT. The system will convert any instances of ROUD or ROUQ values in the RoutStrategy (FIX Tag 9400) instruction to the ROUZ value and convert any instance of ROUE values to the ROUT value. Effective on EDGX 2/3/20.
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| January 30, 2020 | - Version 2.3.13
- Added effective date for Cboe Marke Close (CMC), effective on BZX 3/6/20.
- Added "L" ExDestination value and "LTSE" ContraBroker value for Long Term Stock Exchange.
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| February 6, 2020 | - Version 2.3.14
- Updated Return Bitfield tables with bytes 16 and 17.
- Removed RoutingInst (9303) = Q, post only at limit. Removed MaxRemovePct (9618). Partial post only orders are no longer supported on BYX and BZX.
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| February 14, 2020 | - Version 2.3.15
- Added note indicating the CLC routing strategy will be deprecated and replaced with DRT. The system will convert any instances of ROUD or ROUQ values in the RoutStrategy (FIX Tag 9400) instruction to the ROUZ value and convert any instance of ROUE values to the ROUT value. Effective on EDGA 3/2/20.
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| March 11, 2020 | - Version 2.3.16
- Added ExDestination and ContraBroker values for MEMX and MIAX Pearl Exchanges.
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| April 29, 2020 | - Version 2.3.17
- Renamed CustomGroupID to RiskGroupID
- Added Port Attribute "Risk Group Id(s)" (effective May 15)
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| May 15, 2020 | - Version 2.3.18
- Added Maximum Order Limit section.
- Corrected values for ContraBroker in Example Order Execution Message.
- Added 'e' - Midpoint Discretionary Order with Quote Depletion Protection to ExecInst (effective 6/10/20).
- Updated effective date for Port Attribute "Risk Group (id(s)" to 5/22/20.
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| November 5, 2020 | - Version 2.3.19
- Updated DisplayIndicator (9479) description.
- Corrected RoutStrategy ROBB and ROCO description for EDGA.
- Corrected RoutStrategy TRIM - for BZX.
- Updated description for "Cancel Open Orders on DROP Port Disconnect" port attribute.
- Removed footnote indicating the ExDestination value 'I=Investors Exchange' has the Post to Away option available for ROUT and ROUX.
- Updated Maximum Open Orders Limits to 300,000 for EDGX and BZX.
- Clarifications to usage of PegDifference when using Midpoint Discretionary Orders.
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| November 10, 2020 | - Version 2.3.20
- Added note indicating EDGX Early Trading Session starting time will change from 7:00 a.m. to 4:00 a.m. , Order Acceptance starting time will change from 6:00 a.m. to 3:30 a.m., Order Acceptance end time will change from 7:00 a.m. to 4:00 a.m. (EDGX Only).
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| December 4, 2020 | - Version 2.3.21
- Updated effective date to TBD for changes to EDGX Early Trading Session to 4:00 a.m. and Order Acceptance starting time to 3:30 a.m..
|
| February 8, 2021 | - Version 2.3.22
- Added new port attribute 'Hold Early to 7am' (EDGX Only) (03/08/21).
- Corrected description of BaseLiquidityIndicator field to include W=Waiting value, as this value is already in use.
- Updated effective date for changes to EDGX Early Trading Session to 4:00 a.m. and Order Acceptance starting time to 3:30 a.m. (effective 03/08/21).
- Added ‘Section 1.5.1 - Architecture’ to provide high level overview of protocol architecture and source IP blocking feature.
- Added new ‘Section - Stale NBBO’ to describe system behavior when SIP NBBO is unavailable.
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| April 7, 2021 | - Version 2.3.23
- Removal of CLNK, INET, RDOX, AND TRIM- routing strategies (effective 04/21/21).
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| April 27, 2021 | - Version 2.4.0
- Added new section for Periodic Auctions, added CrossTradeFlag to the New Order and Order Acknowledgment bitfields, added new port attributes related to Periodic Auctions (BYX Only) (Effective 04/14/22 Effective Q3 2021 TBD).
|
| July 19, 2021 | - Version 2.4.1
- Updated Periodic Auctions effective date to (04/14/22 TBD).
|
| August 26, 2021 | - Version 2.4.2
- Updated EDGX Order Acceptance starting time to 2:30 a.m. (effective 09/07/21).
|
| September 27, 2021 | - Version 2.4.3
- Added a new Port Attribute "Capacity Override" (effective 10/12/21).
|
| October 6, 2021 | - Version 2.4.4
- Added a new Port Attribute "Force MDO with QDP" (EDGA and EDGX Only) (effective 10/28/21).
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| November 4, 2021 | - Version 2.4.5
- Duplicative Order Protection Time Threshold to be sunset (effective 12/07/21).
- Duplicative Order Protection Order Count will look at consecutive orders (effective 12/07/21).
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| December 2, 2021 | - Version 2.4.6
- Updated "Port Order Rate Threshold" and "Symbol Order Rate Threshold" Port Attributes to allow a maximum of 10000 msgs/sec (EDGX Only) (effective 12/14/21).
- Added new Port Attributes "Sustained Port Order Rate Threshold" and "Sustained Symbol Order Rate Threshold" (EDGX Only) (effective 12/14/21).
|
| December 17, 2021 | - Version 2.4.7
- Updated Duplicative Order Protection Action description.
- Noted IOC Periodic Auction orders will not be accepted (BYX Only) (Effective 04/14/22 TBD).
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| January 13, 2022 | - Version 2.4.8
- Added a new MatchingUnit field to Optional Fields and Purge Order Bitfield (Effective 02/11/22 for EDGA and 02/14/22 for BYX, BZX, and EDGX).
- Updated the Purge Orders section indiciating that RiskGroupID or MPID purges with no Symbol may be directed to a specific matching unit using the MatchingUnit optional field (Effective 02/11/22 for EDGA and 02/14/22 for BYX, BZX, and EDGX).
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| March 7, 2022 | - Version 2.4.9
- MaxRemovePct field to be sunset (effective 05/08/22).
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| March 25, 2022 | - Version 2.4.10
- Updated Periodic Auctions effective date to 04/14/22 (BYX Only).
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| April 8, 2022 | - Version 2.4.11
- Updated Execution Report with correct SubLiquidityIndicator value for Periodic Auctions (Effective 04/14/22) (BYX Only).
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| May 9, 2022 | - Version 2.4.12
- Added new SubLiquidityIndicator value ‘s’ (effective 06/01/22).
|
| May 25, 2022 | - Version 2.4.13
- Updated DiscretionAmount description in section 7.
|
| June 15, 2022 | - Version 2.4.14
- Updated CrossTradeFlag return bitfields.
|
| July 15, 2022 | - Version 2.4.15
- When Default CrossTradeFlag = 2, IOC, FOK, and displayed orders will not be converted to a Periodic Auction Eligible order and will be sent to the book as-is (BYX Only) (effective 07/29/22).
|
| August 19, 2022 | - Version 2.4.16
- Added LocateBroker to New Order and Order Acknowledgment bitfields (effective 10/14/22).
- MaxRemovePct field to be sunset (effective 01/20/23 effective 10/26/22).
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| August 31, 2022 | - Version 2.4.17
- Updated LocateBroker bitfield location (effective 10/14/22).
|
| October 25, 2022 | - Version 2.4.18
- Updated effective date for MaxRemovePct field to be sunset (effective 01/20/23).
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| November 21, 2022 | - Version 2.4.19
- Clarified that the length of the LoginResponse will vary depending on acceptance or rejection of the LoginRequest.
- Added PreventMatch = X indicating prevent match at the affiliate (Exchange Member) level (effective 12/15/22).
- When Default MTP Value port attribute is set to ‘X’, affiliate match trade prevention will be used by default (effective 12/15/22).
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| December 6, 2022 | - Version 2.4.20
- Updated RestatementReason = W to indicate Wash or MTP Decrement.
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| January 26, 2023 | - Version 2.4.21
- SymbolSfx is an optional field on return order modified messages.
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| February 16, 2023 | - Version 2.4.22
- The CMC restatement will be sent at approximately 3:49 p.m. ET (effective 03/10/23).
|
| March 10, 2023 | - Version 2.4.23
- ExecInst = m (Midpoint Peg- No Trade in a Locked Market) will be allowed for PAE orders (CrossTradeFlag = 2) (BYX Only) (effective 3/29/23).
- Added ExDestination = T (pending approval).
|
| March 13, 2023 | - Version 2.4.24
- Added new "Sponsored Port" and "Sponsoree Firm ID" Port Attributes.
|
| June 22, 2023 | - Version 2.4.25
- Added ContraBroker=‘ICRS’ indicating routed to intelligent cross (pending approval).
|
| July 14, 2023 | - Version 2.4.26
- Updated "Allowed Clearing MPID(s)" Port Attribute to indicate only one Clearing MPID is allowed for trading on a port if "Sponsored Port" attribute is enabled.
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| July 28, 2023 | - Version 2.4.27
- Clarified that Price is optional on
Modify Order requests for market orders.
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| August 22, 2023 | - Version 2.4.28
- TransactionTime in Mass Cancel Acknowledgement messages will indicate the time the event occurred in the Cboe Matching Engine (effective 08/31/23).
|
| September 13, 2023 | - Version 2.4.29
- Added new Disallow Market Orders port attribute (effective 10/13/23).
|
| September 15, 2023 | - Version 2.4.30
- Updated PreventMatch = X indicating prevent match at the affiliate (Exchange Member) or Sponsored Participant level.
- When "Default MTP Value" Port Attribute is set to ‘X’, C Firm’s or Sponsored Participant’s match trade prevention will be used by default.
|
| September 22, 2023 | - Version 2.4.31
- Added new "MPID Filter for Purge Ports" Port Attribute (effective 10/06/23).
- When MassCancelInst = F, if ClearingFirm is provided but is blank (NULL), the
Mass Cancel or Purge Orders will be treated like ‘A’.
|
| October 30, 2023 | - Version 2.4.32
- Updated the identical Purge message definition to include MatchingUnit (effective 11/10/23).
|
| November 17, 2023 | - Version 2.4.33
- Added new value of ‘3=Midpoint Peg - Periodic Auction Only’ to Default CrossTradeFlag port attribute (effective 12/15/23).
|
| December 1, 2023 | - Version 2.4.34
- Added new Architecture and Message in Flight section (effective 01/19/24 on EDGA, and 02/09/24 on BYX, BZX, and EDGX).
|
| February 2, 2024 | - Version 2.4.35
- Updated section 1.5 to include latency expectations as well as Members/TPH's responsibility to monitor the status of the messages they send to the exchange.
|
| April 23, 2024 | - Version 2.4.36
- Noted a maximum of 1,295 Modify Order requests may be made to a single order each trading day.
- Clarified that for MaxFloor the displayed quantity is decremented below one round lot, it is is reloaded up to MaxFloor from reserve.
|
| July 31, 2024 | - Version 2.4.37
- Added new Section 1.2 - Certification Requirement.
|
| October 1, 2024 | - Version 2.4.38
- Effective 11/01/24, RoutStrategy = ROUC, DIRC, RMPT, RMPL, ROBB, ROCO, and TRIM will be removed or updated for EDGA, and RoutingInst = P will be supported for all applicable order types (EDGA Only).
|
| November 13, 2024 | - Version 2.4.39
- Added CmcSessions to Cboe Market Close section, to new Order byte 10, bit 4, new Order Acknowledgement byte 19, bit 8, to Order Restated byte 19, bit 8, and to List of Optional Fields (Effective 01/31/25).
- Added CmcMatchQty to Cboe Market Close section, to Order Restated byte 19, bit 8 and to List of Option Fields (Effective 01/31/25).
- Updated LeavesQty in CMC section to indicate that LeavesQty is the quantity of unexecuted shares.
- When Default CrossTradeFlag = '2' IOC, FOK, and displayed orders are not converted to a Periodic Auction Eligible order and are sent to the book as-is.
|
| November 27, 2024 | - Version 2.4.40
- Effective 12/13/24, when the Default CrossTradeFlag port attribute set to 2, DisplayIndicator (9479) will be ignored if ExecInst (18) = m or M. Additionally, orders with RPI instructions will set this port attribute to 0 (BYX only).
|
| January 15, 2025 | - Version 2.4.41
- Updated with Cboe Titanium branding.
|
| January 27, 2025 | - Version 2.4.42
- Updated CmcSessions description in the Cboe Market Close section and List of Option Fields section to clarify that S = 3:54 p.m. (NASDAQ-listed only) (effective 01/31/25).
|
| March 31, 2025 | - Version 2.4.43
- Added updated BZX times in trading session and added BZX to Hold Early to 7am Port Attribute (effective 05/01/25).
|
| May 30, 2025 | |
| June 13, 2025 | - Version 2.4.45
- Updated ContraBroker to indicate that CHX = Routed to NYSE Texas
- Updated ExDestination to indicate that M = NYSE Texas.
|
| July 15, 2025 | - Version 2.4.46
- Effective 08/15/25, Match Trade Prevention will be supported for Periodic Auctions (BYX only)
|
| July 22, 2025 | |
| August 19, 2025 | |
| November 11, 2025 | |
| December 30, 2025 | - Version 2.4.50
- Added StepUpAmount to List of Optional Fields and to byte 19 bit 64 on all return messages (effective 01/30/26).
|
| January 26, 2026 | - Version 2.4.51
- Effective 03/27/26, the DateTime data type will begin populating the nanoseconds portion.
|
| January 30, 2026 | - Version 2.4.52
- Updated Nasdaq BX to Nasdaq Texas.
|
| March 23, 2026 | |
| April 17, 2026 | - Version 2.4.54
- Added ContraBroker and ExDestination values for Texas Stock Exchange.
|
| April 24, 2026 | |
| August 4, 2026 | - Version 2.4.56
- Added DisplayIndicator (FIX Tag 9479) value of h = Hidden Multiple Price Slide (effective 09/04/26).
|
