Consolidated Circular – F&O Segment of NSE Clearing Limited (April 2025 – March 2026)

Description

NSE Clearing Limited issues its annual consolidated circular for the Futures & Options segment, summarising 14 key circulars issued between April 1, 2025 and March 31, 2026, covering risk monitoring, collateral, margin, and operational updates.

Summary

NSE Clearing Limited (NCL) has issued Circular Ref. No. 050/2026 (Download Ref No: NCL/CMPT/73997) dated April 30, 2026, consolidating all circulars issued for the Futures & Options (F&O) segment during the period April 1, 2025 to March 31, 2026. This circular supersedes all earlier circulars issued to Members and Primary Clearing Members (PCMs) and is structured across five parts (A–E) covering summaries, detailed consolidated rules, formats, annexures, and standardised reports.

Key Points

• Replaces all previously issued F&O segment circulars; members and PCMs must refer to this consolidated document as the definitive reference.
• Covers 14 subject areas across the financial year April 2025 – March 2026.
• Structured into five parts: (A) Summary of important circulars, (B) Detailed consolidated circular, (C) Formats and annexures, (D) List of reports, (E) Reports in standardised format.
• Operational guidelines introduced for Non-Resident Indians (NRIs) participating in the F&O segment.
• Revisions made to member-wise and bank-wise limits for acceptance of Bank Guarantees as collateral.
• Multiple circulars address measures to enhance trading convenience and strengthen risk monitoring in Equity Derivatives.
• NCMS FO API Version 2.0 technical specifications updated.
• File format changes issued in connection with equity derivatives risk monitoring enhancements.
• Migration of services from CIM to NMASS completed.
• Calendar spread margin benefit for Single Stock Derivatives on expiry day formalised.
• Standard Operating Procedure (SOP) introduced for the Closing Auction Session (CAS) in the Equity Segment.
• Facility introduced for Clearing Members to monitor intraday uncrystallised Mark-to-Market (MTM) losses.
• Change in collateral acceptance timings implemented.

Regulatory Changes

• Dissemination of Futures Equivalent: Guidelines issued for disseminating futures equivalent of a contract (Circular 68790, June 27, 2025).
• NRI Operational Guidelines: Formal operational framework established for NRI participation in F&O (Circular 69441, August 1, 2025).
• Bank Guarantee Limits Revised: Member-wise and bank-wise limits for Bank Guarantee collateral acceptance revised (Circular 69643, August 13, 2025).
• Equity Derivatives Risk Monitoring: Multiple circulars (70085, 70194, 70271, 70555, 71608) issued between September and December 2025 to enhance trading convenience and risk monitoring.
• NCMS FO API v2.0: Updated technical specification released (Circular 70176, September 12, 2025).
• File Format Changes: Consequential file format updates issued (Circular 70194, September 15, 2025).
• CIM to NMASS Migration: Services migrated from CIM to NMASS (Circular 71537, November 28, 2025).
• Collateral Timings Changed: Revised schedule for collateral acceptance (Circular 72357, January 16, 2026).
• Calendar Spread Margin on Expiry: Margin benefit formalised for single stock derivatives on expiry day (Circular 72906, February 20, 2026).
• Closing Auction Session (CAS): Operational guidelines and SOP introduced for CAS in Equity Segment (Circular 73370, March 19, 2026).
• Intraday MTM Monitoring: New facility for clearing members to track uncrystallised intraday MTM losses (Circular 73495, March 27, 2026).

Compliance Requirements

• All Members and PCMs must treat this consolidated circular as the single authoritative reference for F&O segment operations, superseding all prior individual circulars.
• Members using Bank Guarantees as collateral must adhere to the revised member-wise and bank-wise limits.
• Members with NRI clients in the F&O segment must comply with the updated NRI operational guidelines.
• Clearing members must integrate with NCMS FO API Version 2.0 per the updated technical specifications.
• Clearing members must adopt the updated file formats resulting from the equity derivatives risk monitoring enhancements.
• Clearing members must utilise the new intraday MTM loss monitoring facility as part of risk oversight obligations.
• All members must follow the SOP for the Closing Auction Session when applicable to equity segment operations.

Important Dates

Impact Assessment

This consolidated circular carries high operational and compliance impact for all F&O clearing members and PCMs. The accumulation of 14 circulars over the year reflects significant regulatory evolution in the F&O space, particularly around:

• Risk Management: Multiple rounds of equity derivatives risk monitoring enhancements signal a sustained regulatory push to tighten intraday and positional risk controls. The new intraday MTM monitoring facility directly increases oversight obligations for clearing members.
• Technology: The NCMS FO API v2.0 upgrade and file format changes require IT teams at member firms to implement and test updates, with potential operational risk if not adopted promptly.
• Collateral Management: Revised Bank Guarantee limits and changed collateral timings require treasury and back-office teams to update workflows.
• NRI Business: Formalised NRI guidelines affect members with non-resident client books, requiring procedural updates.
• Market Structure: Introduction of the Closing Auction Session SOP represents a structural change to equity market operations that clearing members must operationalise.
• Single Stock Derivatives: Calendar spread margin benefit on expiry day offers potential margin relief but requires members to understand eligibility conditions.

Contacts for clarification: Collaterals — collaterals_ops@nsccl.co.in; Clearing — fao_clearing_ops@nsccl.co.in; Risk — risk_ops@nsccl.co.in; Settlement — nsccl_funds@nsccl.co.in / securities_ops@nsccl.co.in. Helpline: 1800 266 0050 (IVR Option 2).

Impact Justification

This is a master consolidated circular replacing all prior F&O segment circulars issued to members and PCMs over a full financial year. It encompasses major regulatory and operational changes including risk monitoring enhancements, collateral rule revisions, NRI operational guidelines, and the introduction of the Closing Auction Session, making it highly relevant for all clearing members.