In the Securities Lending Subscription process, the "End Date", which refers to the last day for returning subscription rights from borrower to lender, will be removed from the RTC - Subscription Management Module screen. There will be no change to the Subscription Surplus event.  The BVBG.098 file will undergo changes where the respective field becomes optional.

Currently, some rollovers have a differentiation in Tag 762 (e.g. Tag 762 = 140 – Financial Rollover, 141 Agricultural Rollover, etc.) identifying the different types of rollovers while EDSs only come with Tag 762 = 90 – Strategy, without this distinction. Therefore, we will include a characterization domain, for example (Tag 762 = xxx – DV01 Neutral and UP Neutral).

Following the implementation the Private Securities Post-Trade Solution (Flow II), B3 identified the need to increase the number of decimal places in the “price” and “quantity” fields from 6 to 8, in the case of Closed-End Fund Shares (CFF) trades. We will therefore adjust the allocation process carried out in Real Time Clearing (RTC) to the flow of the previously existing product. Therefore, these trades can also be allocated through the new solution, which will now have full adherence to the products already integrated with it, namely, Debentures, Real Estate Receivables Certificates (CRI), Agribusiness Receivables Certificates (CRA) and Closed-End Fund Shares (CFF).

B3 has implemented a change to the “expiration code” field in the shortened version of the BVBG.031 (DailyFeeUnitCostReport) file, which is used to inform market participants about the unit costs of fees applicable to trades. From now on, the shortened version, sent to options markets 3 and 4, will only include the month code and the year code, thus reducing the file size. Previously, this field also contained the option type and an alphanumeric sequence. This change was made to accommodate clients who were experiencing difficulties with the current file size.

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.

In seeking to make life easier for users of B3’s trading platform, we now make a daily file available directly on B3 portal with relevant data on tradable instruments. The file consists of an exact copy of the Market Data SecurityList and contains data on the minimum size, in terms of quantity, for instruments tradeable in block trade solutions (Midpoint, BBT and RFQ). This data is updated daily per asset considering the minimum size in financial value defined by the regulator and the asset’s closing price, which until then was only disclosed on Market Data. Now queries can be made via file directly on the B3 portal, simplifying the trade for users of block trade solutions. Check the file now: https://www.b3.com.br/en_us/market-data-and-indices/data-services/market-data/historical-data/newsletters/search-by-trading-session/search-by-trading-session/

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.