NSE weekly summary
NSE updates 24-30 August 2026: NACH mandate form, new F&O names
NSE told members to adopt the revised NACH mandate form, listed F&O on three securities from 26 August, and kept daily ASM, ESM and GSM lists in motion.
The week in brief
What changed
NPCI revised the NACH mandate form and XML format. Members must include the frequency tag on physical mandates. Older formats remain valid until 30 September 2026 and must not be rejected before that date.
F&O trading on Ather Energy, Bank of Maharashtra and Sagility began on 26 August 2026. Members must load the updated contract master files, and NSE Clearing published MWPL, TM, FPI and mutual-fund limits for the three names.
Daily ASM, ST-ASM, ESM, IBC-ASM and GSM circulars moved named scrips through the usual margin, price-band and Trade-for-Trade stages, including a Stage III GSM list on 27 August.
Members must report cyber incidents on SEBI's FIRE-aligned portal at siportal.sebi.gov.in, including multi-stage updates from first report to closure.
SEBI's 15 June ETF norms on base price, price bands, pre-open call auction and close-out now apply from 7 September 2026 instead of 1 September. Saturday 29 August mock sessions tested those pre-open changes.
The Liquidity Enhancement Scheme for Dated Brent Crude Oil futures is extended to 14 December 2026. NSE also published the September Reversal Trade Cancellation Mechanism symbol list, excluding Nifty 500 names, approved securities and ETFs.
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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