Published on: 2026-08-24
Source: Moscow Exchange –
An important disclaimer is at the bottom of this article.
Starting from September 26, 2026, the Moscow Exchange will begin calculating stock indices during all trading sessions.
During the morning, evening, and additional weekend sessions, the Moscow Exchange Index (IMOEX) and RTS Index (RTSI), the Broad Market Index, the Mid and Small Cap Index, and sector indices will be calculated using the current index codes.
Currently, the Moscow Exchange calculates stock indexes during the main trading session. Additionally, during the extended trading sessions, the MOEX Index is calculated under the ticker IMOEX2. Starting September 26, the IMOEX2 index will continue to be broadcast during additional trading sessions in parallel with IMOEX.
Calculation parameters for Moscow Exchange stock indices from September 26:
- official closing index value – the index value calculated based on the results of the main trading session;
- The index values calculated on weekends pertain to the first trading day following the weekend.
In addition, the MOEX Index – active management and the Small and Mid-Cap Index will be calculated once every 15 seconds (currently once a day).
The approach to calculating the Moscow Exchange Information Technology Index will also change – it will include shares of telecommunications companies. The telecommunications index will cease to be calculated.
The possibility of an extraordinary revision of the index calculation bases is provided for in case the free-float coefficient of shares falls below 5% as a result of corporate events.
List of stock indices calculated in additional trading sessions from September 26:
| No. | Index Code | Index Name |
|---|---|---|
| 1 | IMOEX, RTSI | MOEX Index and RTS Index |
| 2 | IMOEXCNY | MOEX Index in yuan |
| 3 | IMOEXW | MOEX Index – active management |
| 4 | MOEXBC | MOEX Blue Chips Index |
| 5 | MRBC | MOEX Index 15 |
| 6 | MOEXBMI, RUBMI | Broad market index |
| 7 | MCXSM, RTSSM | Small and Mid-Cap Index |
| 8 | MOEXINN | MOEX Innovation Index |
| 9 | MOEXOG, RTSog | Oil and Gas Index |
| 10 | MOEXEU, RTSeu | Electric Power Industry Index |
| 11 | MOEXMM, RTSmm | Metals and Mining Index |
| 12 | MOEXFN, RTSfn | Financial Index |
| 13 | MOEXCN, RTScr | Consumer Sector Index |
| 14 | MOEXCH, RTSch | Chemistry and Petrochemistry Index |
| 15 | MOEXTN, RTStn | Transportation Index |
| 16 | MOEXRE, RTSre | Construction Companies Index |
| 17 | MOEXIT, RTSit | Information and Communication Technology Index |
Calculation of stock indices in additional trading sessions.
Changes are being implemented the new edition of the Methodology for Calculating the Moscow Exchange Stock Indices, which will come into force on September 18, 2026. The methodology text can be found at on the Moscow Exchange website.
The Moscow Exchange calculates over 400 different financial market indicators: a family of stock indexes, a family of bond indexes, government sector indexes, pension savings market indexes, an innovation index, a volatility index, commodity indexes, a real estate index, currency fixings, money market and precious metals market indicators.
Please be advised; This information is raw content obtained directly from the information source. It is an accurate report of what the source asserts and does not necessarily reflect the position of MIL-OSI or its clients.