Mock Trading on Saturday, October 17, 2026 · NSE/FAOP/76921

[Image omitted. See the official document.] [Image omitted. See the official document.]

National Stock Exchange of India Limited

Circular

All Members,

Mock trading on Saturday, October 17, 2026 – No new version release

Exchange shall be conducting a mock trading session in the Equity Derivatives (F&O) segment on Saturday, October 17, 2026 as per following schedule:

* Random closure in last two minute | 12:55 | | Normal Market open time | 13:00 | | Contingency Start Time | 13:15 | | Contingency Close Time | 13:45 |

[Image omitted. See the official document.]

Continuation Sheet

National Stock Exchange of India Limited

Members are required to take note of the below important points:

1. NEAT+ version details:

For other important instructions regarding the mock trading, kindly refer to the following Annexure:

Annexure 1: Important instructions regarding mock trading session.
Annexure 2: Pre-requisites / General guidelines for participating in the Mock environment.
Annexure 3: Important guidelines in case of switchover of trading system to Disaster Recovery (DR) Site.

For and on behalf of
National Stock Exchange of India Limited

Khushal Shah
Associate Vice President

[Image omitted. See the official document.]

Continuation Sheet

National Stock Exchange of India Limited

Annexure – 1

Important instructions regarding mock trading session

• 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. | | Participation: | Members should participate using all trading software and re-login into live environment to ensure smooth connectivity for Monday, October 19, 2026. | | NOTIS Availability: | The NOTIS application will be accessible during the mock trading Session. | | 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

[Image omitted. See the official document.]

Continuation Sheet

National Stock Exchange of India Limited

| Eligibility | All members enabled for trading in the Futures & Options (FO) 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. |

Annexure – 3

Important guidelines in case of switchover of trading system to Disaster Recovery (DR) Site

1. Kindly note below points after switch over to DR site:

• a. Trades of primary site will be available in Previous Trades window.
• b. Trades can be modified/cancelled using Multiple Trade Modification and Cancellation window respectively.
• c. Messages of primary site will be available in TWS Message Area.

2. If user renames or deletes the User folder and re-login the NEAT+ terminal, then data of primary site shall not be available in the functional window as mentioned above point.