Mock trading on Sunday, August 30, 2026
NSE circular NSE/CMTR/76033 · 29 Aug 2026
Official title
Mock trading on Sunday, August 30, 2026 - No new version release
Official record
Open source pageSummary
Check the official recordWhat changed
The National Stock Exchange of India Limited conducts a mock trading session for the Capital Market segment on August 30, 2026. The session originates from the Disaster Recovery site. Members must use NEAT versions 7.8.8 or 7.8.9. Members must load specific master files into their trading applications before the session. All outstanding orders clear before each session. Members using NNF software must manually clear orders in their systems. Trades during the mock session do not result in fund pay-in or pay-out. Members must ensure their User IDs, IPs, and Box ID mappings are ready. The Exchange provides specific timings for various market windows. Members may contact the Exchange for support via the provided toll-free number.
What you must do
- Use NEAT version 7.8.8 or 7.8.9 for the mock trading session.
- Load master files into the trading application before the mock session.
Document text
National Stock Exchange of India Limited
Circular
Department: CAPITAL MARKET SEGMENT
| Download Ref No: NSE/CMTR/76033 | Date: August 29, 2026 |
|---|---|
| Circular Ref. No: 121/2026 |
All Members,
Mock trading on Sunday, August 30, 2026 – No new version release
Exchange is conducting a mock trading session on Sunday, August 30, 2026 from DR site.
| Mock Date: August 30, 2026 | |
|---|---|
| Particulars | Time in Hrs |
| Trading Session from DR site | |
| Block Deal Window Session open time | 10:45 |
| Block Deal Window Session close time | 11:00 |
| Pre-Open open time | 11:00 |
| Pre-Open* close time | |
| * Random closure in last one minute | 11:08 |
| Special Preopen Session open time (For IPO & Relisted security) | 11:00 |
| Special Preopen Session** close time (For IPO & Relisted security) | |
| ** Random closure in last ten minute | 11:45 |
| Normal Market open time | 11:15 |
| Call Auction Illiquid session open time (1 session of 30 mins)* | |
| * Random closure in last one minute | 11:30 |
| Normal market open time for stocks in special preopen session | 12:00 |
| T+0 Market Open time | 11:15 |
| T+0 Market Close time | 11:45 |
| T+0 Market Trade modification end time | 11:50 |
| Auction Market Open Time | 11:30 |
| Auction Market Close Time | 12:15 |
| Normal Market close time for CAS securities. | 12:15 |
| CAS Open time | 12:20 |
| CAS Market order restriction start time | 12:25 |
| CAS close time * | |
| * Random closure in last two minute | 12:30 |
| Normal Market close time | 12:30 |
| Closing Session open time | 12:50 |
| Closing Session close time | 12:55 |
| Trade Modification end time | 13:00 |
| Re-login Timings | |
| Live Re-login start time | 14:30 |
| Live Re-login close time | 15:00 |
Members are advised to use NEAT version 7.8.8 & 7.8.9 for this mock
Members are required to take note of the below important points: A) NEATPlus version details:
| Version | Download path on NSE Extranet path | Discontinuation date |
|---|---|---|
| 7.8.8 | /faoftp/faocommon/NEATPlus788 | September 05, 2026 (mock) |
| 7.8.9 | /faoftp/faocommon/NEATPlus789 | - |
- Members are advised to load the master files in the trading application before Mock trading session on August 30, 2026:
| File name | Location |
|---|---|
| security.gz | /cmftp/common/ntneat |
| participant.gz | |
| nnf_security.gz | |
| nnf_participant.gz | |
| NSE_CM_security_28082026.csv.gz | /cmftp/common/tbt_masters |
| cm_contract_stream_info.csv |
For other important instructions regarding the mock trading, kindly refer to the following Annexures: Annexure 1: Important instructions regarding mock trading session. Annexure 2: Pre-requisites / General guidelines for participating in the Mock environment.
For and on behalf of National Stock Exchange of India Limited
Khushal Shah Associate Vice President
| Toll Free No | Email id |
|---|---|
| 1800-266-0050 (Option 1) | msm@nse.co.in |
Annexure – 1
Important instructions regarding mock trading session
| Particulars | Details |
|---|---|
| Connectivity Parameters: | Refer to circular NSE/MSD/73993 dated April 30, 2026 & NSE/MSD/74511 dated June 02, 2026 for interactive connectivity details. |
| Installation Guide: | Available on NSE Extranet at /common/InstallationProcedure. |
| Software Version: | NEAT+ 7.8.8 & 7.8.9 |
| Order Purge: | All outstanding orders will be cleared before each session. Members using NNF software must manually clear orders in their systems. |
| Software Testing: | Refer to circular NSE/MSD/46441 and SEBI circular SEBI/HO/MRD1/DSAP/CIR/P/2020/234. Members may use either Mock Trading or Simulated Environment to meet regulatory requirements. |
| No Financial Obligation: | Trades during mock sessions will not result in any fund pay-in or pay-out. |
| UCC/PAN Validity: | Only valid and compliant UCC/PAN uploaded and approved before cutoff will be allowed. For queries, contact uci@nse.co.in. |
| UCC Validation will be skipped during contingency time for order entry. | |
| Live Updates: | Visit www.nseindia.com for any session-related updates. |
| Support: | For queries, call Toll-Free: 1800 266 0050 (Option 1). |
Annexure – 2
Pre-requisites / General guidelines for participating in the Mock environment
| Pre-requisites / General guidelines Heads | Details |
|---|---|
| Eligibility | All members enabled for trading in the Capital Market (CM) segment in the live market are automatically eligible for mock trading. |
| Participation is enabled using existing User IDs, IPs, and Box ID mappings from the live environment. | |
| Telnet Connectivity | Ensure you can successfully telnet the Exchange host from the IP address you intend to use. |
| Box ID Setup | Confirm that the Box ID is created on the IP with appropriate messages for the segment you wish to trade in. |
| NNF Application Users | If using Non-NEAT Frontend (NNF): |
| a) User ID must be of dealer type. | |
| b) It must be converted for NNF. | |
| C) It must be mapped with the IP. | |
| Branch/User Limits | Set appropriate branch and user limits from the Corporate Manager Terminal before placing orders in the mock session. |
| Exchange Requests for Mock Participation | Send email requests for the following actions with User ID and segment details: |
a) Pro Enablement b) CTCL Conversion (only dealer IDs) c) Password Reset for Corporate Manager User ID d) Unlocking of Corporate Manager User ID e) Change of Trading Rights (e.g., PRO to CLI, PRO+CLI) | | Password Management | Corporate Manager User ID: Exchange will assist with reset/unlock via email. Other User IDs: Members must reset/unlock these themselves using the Corporate Manager Terminal. |
Source details
- Source
- National Stock Exchange of India
- Type
- circular
- Published by source
- 29 Aug 2026
- Document number
- NSE/CMTR/76033
- Issuing division
- CAPITAL MARKET SEGMENT
- Coverage area
- securities