Description

NSE Clearing Limited imposes additional exposure margin of 15% in equity derivatives segment on 21 securities where top 10 clients account for more than 20% of MWPL, effective April 1, 2026.

Summary

NSE Clearing Limited (Circular Ref. No: 032/2026) has mandated an additional exposure margin of 15% in the equity derivatives segment on securities where the top 10 clients collectively account for more than 20% of the Market Wide Position Limit (MWPL). This framework applies to 21 identified securities and becomes effective from April 1, 2026, immediately after the expiry of March 2026 contracts.

Key Points

  • Additional exposure margin of 15% will be levied in the equity derivatives segment on qualifying securities.
  • Trigger condition: Top 10 clients account for more than 20% of MWPL for the security.
  • Where Additional Surveillance Margin (ASM) is also applicable, the higher of the two margins will be levied.
  • Securities are identified using 3-month rolling data and reviewed on a monthly basis.
  • 21 securities have been shortlisted for this framework in the initial list (Annexure 1).
  • Reference circular: NSE/INVG/40472 dated March 18, 2019.

Regulatory Changes

This circular reactivates/updates the framework originally established under NSE/INVG/40472 (March 18, 2019) on exposure margin for securities under MWPL. The key regulatory update is the publication of a fresh list of 21 securities falling under this framework as of March 2026, with the next effective cycle starting April 1, 2026.

Compliance Requirements

  • All Members of NSE must ensure compliance with the revised margin requirements for the 21 listed securities.
  • Members must levy the additional 15% exposure margin (or ASM if higher) on client positions in these securities in the equity derivatives segment.
  • Members should update their risk and margin systems before April 1, 2026.
  • For queries, contact: risk_ops@nsccl.co.in or call 1800 266 0050 (IVR option 2).

Important Dates

  • Circular Date: March 17, 2026
  • Effective Date: April 1, 2026 (immediately after expiry of March 2026 contracts)
  • Review Frequency: Monthly, based on 3-month rolling data

Impact Assessment

This circular has a high market impact for traders and members active in equity derivatives for the 21 listed securities. The 15% additional exposure margin increases the capital requirement for holding positions in these stocks, potentially reducing open interest and liquidity in derivatives for these counters. Notable names in the list include large-cap and mid-cap stocks such as DLF, Vodafone Idea (IDEA), Jio Financial Services (JIOFIN), Adani Energy Solutions (ADANIENSOL), Ambuja Cements (AMBUJACEM), and LIC Housing Finance (LICHSGFIN), making this a broad-based margin tightening. Proprietary desks and institutional traders with concentrated positions will be most affected. The monthly review mechanism means securities can be added or removed, requiring ongoing monitoring.

Impact Justification

Directly affects margin requirements for 21 securities in equity derivatives, increasing trading costs by 15% for concentrated positions. Impacts a broad set of well-known stocks including DLF, Vodafone Idea, Adani Energy, and Jio Financial. Effective from April 1, 2026 post March expiry.