The National Stock Exchange (NSE) and Bombay Stock Exchange (BSE) are conducting mock trading sessions on Saturday, November 14, 2026, to test their trading platforms, networks and order-related facilities. No actual buying or selling of shares will take place during the exercise, as all transactions will be simulated.
The NSE has scheduled two mock trading sessions on Saturday. The first session began at 8:45 AM with the opening of the block deal window, which will remain open until 9:00 AM.
This will be followed by the pre-open session. Mock trading in the normal market will begin at 9:15 AM and continue until 11:30 AM. During this period, the exchange will also test facilities related to the T+0 settlement market, the special pre-open session and the auction market.
Testing of the T+0 market will take place between 9:15 AM and 11:00 AM.
During the exercise, brokers will place orders through their respective systems and check whether orders are successfully transmitted to the exchange. They will also test order modification and cancellation facilities to identify any technical issues.
The NSE's second mock trading session will begin at 12:15 PM through its Disaster Recovery (DR) site.
A DR site is an alternative technical infrastructure designed to help maintain operations if the primary system encounters a disruption.
The pre-open session on the DR site is scheduled for 12:15 PM. Mock trading in the normal market will begin at 12:30 PM and continue until 2:30 PM.
The closing session will take place between 2:50 PM and 3:00 PM.
Additionally, brokers will be required to log in to the live system again between 4:00 PM and 4:30 PM. This exercise will help verify connectivity ahead of the resumption of regular trading on Monday, November 16.
The Bombay Stock Exchange (BSE) is also conducting mock trading in its equity segment on Saturday.
The login process for the exercise is scheduled to begin at 10:15 AM. The BSE will conduct the testing through its primary site.
The exercise will cover normal trading operations as well as pre-open, block deal, call auction and closing-related facilities. Brokers will also be able to check how their systems respond to sudden technical disruptions in the market.
The BSE has announced separate timings for the currency and commodity derivatives segments.
For both segments, the login window will remain open from 10:15 AM to 11:00 AM. Test trading will subsequently take place from 11:00 AM to 3:30 PM.
The remaining timings for the equity segment have been specified in a separate circular issued by the exchange.
Stock exchanges handle a large volume of orders every trading day, with investors placing orders to buy and sell shares through brokers. Exchanges and brokerage firms rely on technical systems to process these transactions.
These systems undergo periodic changes, including software installations and updates to existing infrastructure. Mock trading helps exchanges and brokers verify whether all facilities are functioning properly after such changes.
During these sessions, brokers can test their technical infrastructure without using actual money or carrying out real market transactions.
The exercise also helps identify potential issues, including delays in order transmission and network-related problems, so that necessary corrections can be made before regular trading resumes.
