NSE weekly summary
NSE updates 28 September-4 October 2026: Nifty 50 swap, lot sizes
NSE put BSE in the Nifty 50 in place of Wipro, revised F&O and SME lot sizes, fixed index freeze limits and opened half-year member filings.
The week in brief
What changed
BSE Ltd. replaced Wipro in the Nifty 50 from 30 September 2026, with related changes to the Nifty Next 50, Midcap Select and India FPI 150. Wipro and other scrips were kept out of T+0 settlement on 30 September for the rebalancing.
Stock derivative lot sizes change for November 2026 and January 2027 expiries, and 60 SME symbols move to smaller lots. Index quantity freeze limits for NIFTY, BANKNIFTY and four other indices become fixed values from 5 October.
F&O trading opened in Anand Rathi Wealth, Siemens Energy India and Ujjivan SFB, with position limits set by NSE Clearing.
Half-year filings for the period ended 30 September are open: internal audit, RBS data, margin trading certificates and RFQ entity type confirmation. Algo users must report AI and ML systems by 15 October, the same deadline as the quarterly cyber incident report.
Daily ASM, ST-ASM, ESM and IBC surveillance lists moved securities into higher margins, and the high-encumbrance list now carries a 75 percent minimum margin.
Mock trading ran on 3 October across five segments with no new software version. NSE Clearing revised SLBS and cross-margin ETF lists and the October commodity settlement calendar, and commodity snapshot recovery over TCP/IP starts on 12 October.
Complied AI condensed the week's NSE records into the points above. Use the inline links to check each underlying update.
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