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).

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.

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.

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).

B3 has improved the filter functionality in the Subscription and Priority Offer modules of its post-trade platform – RTC (Real Time Clearing) – to facilitate the return of subscription rights by position or instrument. Previously, this process had to be carried out contract by contract, which required more time and operational effort. With the new solution, participants will be able to fill in the total quantity available for return in lots. Furthermore, the quantity field will remain editable, allowing clients to opt for a partial return, according to their needs.

To render contract management more efficient, B3 implemented the functionality rejection per lot on its post-trade platform, RTC (Real Time Clearing). Currently, participants need to reject each amendment, renewal or early settlement individually. With this improvement, clients can reject all available transactions at once, providing greater agility and convenience to the process.

Starting October 1, 2025, B3 will publish securities lending renewal rates directly on its website through the Daily Market Bulletin (BDM). The data will be available in the Clearinghouse chapter on the "Asset Lending - Renewals" table.

B3 has implemented an improvement to the margin call process in asset lending transactions. Now, when the borrower returns an asset to the lender, there will no longer be a margin call between the 11:00 AM and 4:00 PM windows. This is because the asset is being returned to the portfolio of the lender who is the asset's owner. This eliminates the need to use liquidity resources during this time interval.