Improvement of the UDS interface will occur when strategies with Options are created. Previously, users had to enter all relevant option data ("Expiration", "Underlying Asset", "Type" and "Strike Price") so that the option ticker could be generated by the system. With the implementation of this improvement, users will only need to enter the option code in the specific field on the strategy creation screen. This will lead to automatic filling with all the data needed to create the UDS. However, the "C/V" (call or put) and "QtdLote" (quantity) fields must be completed. With the change, the "Code" field will be repositioned to the left of the screen, right after the "Market" field.

Following the implementation of the Post-Trade Solution for Fixed Income Private Securities (Flow II), in some cases, the number of allocations exceeded the limit of the current message (bvmf.234), making it impossible to send the status of the trade. In this respect, we will implement an improvement to the flow, creating a new message (b3.296), which will be paginated and will allow the institution to receive the status of all allocations made.

B3 will implement an optional field in securities lending to provide custodians with visibility of the give-up participant ID for executed trades. The information will provide greater transparency and speed up the validation of orders entered by managers. It will be available both via message and on the electronic trading platform, streamlining and improving the validation of offers. For technical details, see the catalog on the project page.

Starting in July, B3's LINE Trading will adopt a new calculation for the TMOC and TMOV metrics, which define the maximum bid and ask sizes for options orders. The change will take effect in two stages: July 21, 2025, for Equity Options, and August 25, 2025, for Derivatives Options. Details of the update can be found in the LINE 5.0 | B3 version.