Published on: 2026-10-20
Source: Moscow Exchange –
An important disclaimer is at the bottom of this article.
We inform you about changes in the SIMBA binary protocol for the stock and currency markets, planned for implementation 30 November 2026 in the planned release of stock and currency market systems.
PLEASE NOTE that changes in the SIMBA protocol for the stock and currency markets are not backward compatible and require adjustments on the client software side.
In the SecurityDefinition message, the field type for LotDivider will be changed from uInt16 to uInt32.
The updated message scheme sbe_asts_md is available on the Exchange’s FTP server: https://ftp.moex.com/pub/SIMBA/ASTS/schemas/release28_11_2026/.
Document with a list of changes in the stock and currency market systems updated.
Please note; This information is raw content obtained directly from the source of information. It is an accurate report of what the source claims and does not necessarily reflect the position of MIL-OSI or its clients.