Scope of Mock Trading Session on 05/25/2024 - PUMA Trading System
To assist participants in planning changes and implementations, a mock trading session of the PUMA Trading System will be held on 05/25/2024, with market participation.

In this session, the following system and infrastructure changes will be validated:

•    First wave of the Matching Engine update:
Implementation of the first tranche of the new version of the Matching Engine, which contains improvements, one of them being the Transaction Time, which is currently measured in milliseconds and will be measured in nanoseconds. Specifically for the Matching Engine below:

MarketSegmentID

68 (DRV01) and 70 (DRV02) 80 (EQT01) and 98 (EQT09)

Waves 2 and 3 will be held on 3rd and 06/10/2024, respectively.

•    LiNe Trading and LiNe Clearing Update:
New LiNe Trading and LiNe Clearing version implementation that will bring improvements in the time for generating the Position History, among others, without impact on the participants.

•    Market Data Update (UMDF FIX/FAST and UMDF Conflated):
The new version of Market Data solves the problem of handling transaction corrections, following the Operational Procedures Manual. Instead of only reporting the time when the correction was made, B3 reports the exact moment when the original transaction occurred. Specifically for the Matching Engine below:

MarketSegmentID

68 (DRV01) and 70 (DRV02) 80 (EQT01) and 98 (EQT09)

Waves 2 and 3 will be held on 3rd and 06/10/2024, respectively.

•    FIX and Binary Gateway – Entrypoint and Drop Copy Gateway Update:
Preparation for the migration of FIX Gateways that will receive Execution Reports in binary and convert them to the FIX protocol. 

Currently, the FIX trading gateways receive messages in the FIX format. However, with the update we will make to the Mock Trading Session, all FIX gateways will receive messages in Binary format. They will then convert these messages to the FIX protocol and send them to clients, ensuring that there is no impact beyond what is stated in the CID document available on the B3 website or changes to the FIX protocol.

During Mock Trading Session, a paving will be done, and subsequently, the update will follow the planning disclosed at https://clientes.b3.com.br, Posts, News, Highlighted News, B3 Tech Launches | Trading.

1.    Mock trading session timetable:

Starts	Ends	Phase
10:30 am	11:00 am	Roll call and connectivity test
11:00 am	11:05 am	Pre-opening
11:05 am	11:55 am	Trading – mandatory script
11:55 am	12:00 am	Closing Call
12:00 am	12:30 pm	Free Trading

2.    Morning test of the electronic trading system:
It is mandatory for all the firms to participate in the morning test, which will be held on May 27th, 2024 (Monday), from 7:00 a.m. to 7:45 a.m. for the derivatives market and from 7:00 a.m. to 8:00 a.m. for the equities market in both production environments.

3.    Participation confirmation:
The activities to be performed during the test can be found in the mandatory script. Market data for these instruments will be sent during the mock trading session.
Participation in the mock trading session must be confirmed no later than 12 noon on May 24th, 2024 (Friday), exclusively by email at [email protected] with “Mock trading session” in the subject line, identifying the institution, naming the individuals who will participate and supplying their contact details (telephone numbers and email addresses).
In response to this confirmation, the participant will receive the mandatory test script, and must fill it out and send it to the above email address.

Please note that mock trading session participants must adjust their internal systems so that the results of the mock trading session are completely segregated from real trading sessions.

Further information can be obtained from B3 Services – Trading, by telephone on +55 11 2565-5021/5022.