The National Stock Exchange (NSE) on April 06, 2026, issued a circular regarding the Business Continuity for Interoperable Segments of Stock Exchanges.
SEBI has mandated NSE and BSE to implement an alternate trading venue mechanism to handle outages during trading hours, wherein each exchange will act as a backup for the other. In line with this, NSE has issued detailed modalities, particularly for the equity derivatives segment, including provisions for conducting a pre-open session if invocation is communicated by BSE before market hours.
For BSE-exclusive derivative contracts traded on NSE, specific identification and operational rules are prescribed. These contracts will carry a “$” suffix in their symbols and a distinct admission type in contract files. Such contracts will only be enabled upon invocation of the alternate trading venue; otherwise, any orders placed will be rejected. Contract specifications will follow BSE norms, with no applicability of spread contracts or LPP.
Additionally, from April 13, 2026, NSE will provide separate contract files on its website to help participants easily identify NSE-only and NSE+BSE contracts. Members are advised to follow updated file structures, trading conditions, and system changes to ensure smooth participation during such contingency scenarios.
[Circular No: 43/2026]
