Description

BSE announces adjustments to F&O contracts for HDFC AMC due to 1:1 bonus issue with record date November 26, 2025. Strike prices will be halved and market lot doubled to 300.

Summary

BSE has announced adjustments to all Futures and Options contracts of HDFC Asset Management Company Ltd (Scrip Code: 541729, Derivatives Code: HAMC) following the company’s announcement of a 1:1 bonus issue. The record date is November 26, 2025, and adjustments will be applied end-of-day on November 25, 2025 (ex-date: November 26, 2025). An adjustment factor of 2 will be applied to all existing F&O contracts in compliance with SEBI guidelines.

Key Points

  • HDFC AMC has declared a 1:1 bonus issue (1 bonus share for every 1 existing share of Rs. 5/- each)
  • Adjustment factor calculated as (1+1)/1 = 2
  • All existing F&O contracts will be adjusted on EOD November 25, 2025
  • Strike prices will be divided by 2 (halved)
  • Market lot will be multiplied by 2, increasing from 150 to 300 contracts
  • Positions will be multiplied by 2
  • Futures prices will be divided by 2 and rounded to nearest tick size
  • Derivatives Asset Code: HAMC

Regulatory Changes

No new regulatory changes. The adjustments are made in pursuance of existing SEBI guidelines for adjustment of Futures & Options contracts on announcement of corporate actions.

Compliance Requirements

  • Trading members must note the adjusted contract specifications effective from ex-date
  • Members should contact their designated Relationship Managers for any clarifications
  • All market participants must account for the adjusted strike prices, market lots, and positions in their trading systems

Important Dates

  • November 10, 2025: Notice date
  • November 25, 2025: Adjustment date (end of day)
  • November 26, 2025: Ex-date and Record date for bonus issue

Impact Assessment

Market Impact: High - All existing F&O positions in HDFC AMC will be automatically adjusted with a 2x factor, significantly altering contract specifications.

Operational Impact: Trading members need to update their systems and inform clients about the adjusted contract terms. The doubling of market lot size from 150 to 300 will impact capital requirements and position limits.

Trading Impact: Strike prices will be halved, making existing strike levels more granular. The increased market lot may affect liquidity and accessibility for smaller traders.

Impact Justification

Significant F&O contract adjustments with 2x adjustment factor affecting all existing positions, strike prices, and market lots for a major AMC stock