BSE has announced a trading holiday scheduled for January 15, affecting three specific market segments. The exchange will suspend trading activities in currency derivatives, new debt securities, and tri-party repo segments on this date.

Affected Trading Segments

The trading holiday will impact the following segments:

Market Operations Impact

The announcement specifically covers currency derivatives trading, which includes various foreign exchange instruments traded on the platform. The new debt segment, which facilitates trading in recently issued debt securities, will also remain closed during this period.

The tri-party repo segment, which enables repurchase agreement transactions with a third-party custodian, will similarly observe the trading holiday. This segment plays a crucial role in short-term funding operations for market participants.

Exchange Schedule

While these three segments will observe the trading holiday, other segments of the exchange are expected to continue their regular operations unless specified otherwise. Market participants in the affected segments should plan their trading activities accordingly and adjust their strategies for the temporary suspension.

The exchange typically announces such holidays in advance to ensure market participants have adequate time to prepare for the temporary closure of specific trading segments.

Indian stock exchanges BSE and NSE have announced a comprehensive mock trading session scheduled for Saturday, January 10, designed to test system resilience and infrastructure preparedness. The exercise forms part of the exchanges' routine measures to ensure operational stability and market confidence.

Purpose and Scope of Mock Trading Session

The mock trading session will cover both equity and derivatives segments, allowing trading members and third-party platform users to validate their systems under simulated market conditions. The exercise enables participants to test order management systems, risk controls, and familiarize themselves with new features without impacting live market operations.

Detailed Session Schedule

The mock trading session will follow a comprehensive timeline covering various market mechanisms. The schedule begins with a login window from 10:15 am to 10:45 am, followed by multiple trading phases.

The session will include trade modification windows for both T+1 and T+0 trades, with random stoppages implemented to simulate real-market unpredictability.

Testing Functionalities and Features

Participants will be able to test a wide range of market functionalities during the session. The exercise covers exceptional market conditions to help assess system behavior during stress periods.

Key testing areas include:

• Call auction sessions and risk-reduction modes
• Trading halts and block deal mechanisms
• Periodic call auctions and settlement auctions
• Order management system validation
• Infrastructure stress testing

Software Upgrade and Technical Updates

As part of the exercise, the exchange will release BOLT Pro TWS version 12.50, a new version of its trading workstation. Details regarding the software upgrade will be shared through official circulars.

Alternate Trading Venue Testing

A significant component of the January 10 session involves testing alternate trading venue mechanisms in compliance with SEBI directives. The exercise will simulate an NSE outage scenario, during which BSE will function as the alternate trading venue for NSE-exclusive securities in the equity segment.

This testing ensures seamless trading continuity even during technical disruptions at one exchange, strengthening overall market resilience.

Market Preparedness and Risk Management

NSE emphasized that such drills are essential for identifying potential system gaps before they impact investors. Regular testing of systems, connectivity, and contingency mechanisms helps maintain operational resilience and market confidence. The mock sessions serve as preventive measures to ensure smooth market operations during actual trading hours.

Source: https://economictimes.indiatimes.com/markets/stocks/news/nse-bse-to-hold-mock-trading-session-on-saturday-can-investors-trade-all-you-need-to-know/articleshow/126435822.cms