NSE Mock Trading on September 20, 2025: FO, CM, CD, COM Schedule and Guidelines

The National Stock Exchange will conduct a mock trading session on September 20, 2025 across Futures and Options, Capital Market, Currency Derivatives and Commodity Derivatives, with specified session timings, software versions and participation rules to ensure readiness for live operations.

Mock Schedule and Timings

FO: Normal market 11:15 to 14:00, trade modification till 14:10, live re-login 16:00 to 16:30.

CM: Pre open 11:00 to 11:08 with random closure, normal market 11:15 to 14:00, closing 14:10 to 14:20, modification till 14:30, live re login 16:00 to 16:30; block windows at 10:45 to 11:00 and 12:05 to 12:20; T+0 11:15 to 13:30.

CD: Normal market 11:00 to 14:00, trade modification till 14:10, live re-login 16:00 to 16:30.

COM: Normal market 11:00 to 14:00, position limit or collateral setup and trade modification till 14:10, live re-login 16:00 to 16:30.

Software and Versions

FO and CM require NEATPlus 7.8.3, compatible with new broadcast parameters per July 28, 2025 circular; members using NNF must migrate as existing parameters end October 04, 2025.

CD uses NEAT 3.5.3 and requires reversion to NEAT Adapter 1.0.20 for Windows and Linux, GR port 10877, as per the September 05, 2025, advisory.

COM uses NEAT 1.5.1 with installation via the Extranet path provided for mock setup.

Read More: Mangalam Worldwide Secures NSE Approval to Migrate to the Main Board!

Algo and Risk Controls

Functionalities for safer retail participation in algorithmic trading and pre trade risk controls including pre emptive order cancellation based on NNF ID and Algo ID are enabled for testing in this mock.

These features were first released in the August 02, 2025 mock and are live effective August 04, 2025, with continued availability in the simulated environment.

Operational Guidelines

All outstanding orders will be purged before sessions; NNF users must clear orders locally, and trades during mock create no fund pay-in or pay-out obligations.

Only valid UCC or PAN approved before the cutoff will be allowed, with UCC validation skipped during contingency order entry; NOTIS and Connect2NSE or Extranet are unavailable from 05:00 to 08:30.

Members should participate using all trading software and re-login to live to ensure smooth connectivity for Monday, September 22, 2025.

Eligibility and Setup

All members enabled in respective live segments are eligible for mock using existing user IDs, IPs and Box ID mappings with telnet checks and proper Box ID setup.

NNF users must ensure dealer type IDs, NNF conversion and IP mapping; set branch and user limits in Corporate Manager, with specified email processes for enablement and resets.

Conclusion

The September 20, 2025, NSE mock spans FO, CM, CD and COM with clear timings, mandated software versions, algorithmic safeguards and participation prerequisites to validate connectivity and controls ahead of live trading.

Disclaimer: This blog has been written exclusively for educational purposes. The securities or companies mentioned are only examples and not recommendations. This does not constitute a personal recommendation or investment advice. It does not aim to influence any individual or entity to make investment decisions. Recipients should conduct their own research and assessments to form an independent opinion about investment decisions.

Investments in securities are subject to market risks. Read all related documents carefully before investing.