BSE Revised Expiry Days for Sensex, Bankex, and Sensex 50 Index Derivatives to Start from January 1, 2025

The Bombay Stock Exchange (BSE) earlier announced a significant revision in the expiry days for its Sensex, Bankex, and Sensex 50 index derivatives contracts, effective from tomorrow January 1, 2025. This change is part of a broader initiative to streamline trading processes and align expiry schedules more effectively with market practices.

New Expiry Schedule for Weekly and Monthly Contracts

• Sensex Weekly Contracts: Currently expiring on Fridays, the weekly contracts will now expire on Tuesdays, starting January 1, 2025.
• Monthly Contracts (Sensex, Bankex, and Sensex 50): The expiry for these contracts shifts from the current last Friday, last Monday, and Thursday, respectively, to the last Tuesday of each month.

Changes to Quarterly and Semi-Annual Contracts

• The expiry of Sensex’s quarterly and semi-annual contracts will now fall on Tuesdays of the expiry month, replacing the existing last Friday schedule.
• Derivative contracts expiring beyond January 3, 2025, will uniformly adhere to this revised Tuesday schedule.

Transition Timeline and Implementation Details

BSE clarified that the expiry dates for all existing index futures and options contracts will be updated as per the new schedule at the close of trading on December 31, 2024. However, the weekly derivatives contract for Sensex expiring on January 3, 2025, will retain its Friday expiry as an exception.

Any new derivatives contracts generated after January 1, 2025, will adopt Tuesday as their designated expiry day.

No Changes to Contract Specifications

In its circular, BSE emphasised that the revision only affects expiry days. “Trading members are requested to note that there is no change in other aspects of the contract specifications in the above-mentioned contracts except on expiry day.

The details of the updated derivative contracts will be available in the derivatives contract master file at the end of the day on December 31, 2024,” the circular stated.

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