Short answer

According to a SEBI circular (WEB), effective from November 20, 2024, stock exchanges in India (both NSE and BSE) are allowed to offer weekly expiry F&O contracts for only one benchmark index per exchange. The structure is as follows:

NSE: Weekly expiries are available only for the Nifty 50 index. Weekly expiries for Bank Nifty, Nifty Financial Services, and Nifty Midcap Select were discontinued.

BSE: Weekly expiries are available only for the Sensex index. Weekly expiries for BANKEX and Sensex 50 were discontinued.