Description
NSE announces 1:1 bonus adjustment for HDFCAMC futures and options contracts effective November 26, 2025, with adjustment factor of 2 and revised market lot of 300.
Summary
NSE has announced adjustments to Futures and Options contracts for HDFC Asset Management Company Limited (HDFCAMC) due to a 1:1 bonus issue. The adjustment will be effective from November 26, 2025, with an adjustment factor of 2 and revised market lot of 300. Members must update their trading systems with revised contract files before the ex-date.
Key Points
- Company: HDFC Asset Management Company Limited (HDFCAMC)
- Corporate Action: 1:1 Bonus Issue
- Face Value: Rs 5/-
- Adjustment Factor: 2
- Revised Market Lot: 300 (adjusted from current lot size)
- Ex-Date/Effective Date: November 26, 2025
- Revised Option Strike Prices: To be provided one day prior to ex-date
- Strike prices and lot sizes will be in decimal places and rounded to nearest tick size/integer
- Updated contract.gz and spread files will be available one day before ex-date
Regulatory Changes
Adjustments are made in pursuance of SEBI guidelines for futures and options contracts following corporate action announcements. The adjustment methodology follows NSE’s standard corporate action adjustment framework available at: https://www.nseindia.com/products-services/equity-derivatives-corporate-actions-adjustments
Compliance Requirements
- Members Must: Load updated contract files (NSE_FO_contract_ddmmyyyy.csv.gz) and spread files (NSE_FO_spdcontract_ddmmyyyy.csv.gz) on trading applications before trading on November 26, 2025
- File Location: Available on Extranet server directory faoftp/faocommon
- Alternative Source: MII contract and spread files available on NSE website at https://www.nseindia.com/all-reports-derivatives
- Position Adjustments: Methodology will be separately communicated by the respective Clearing Corporation
- Contract details including revised strike prices, futures prices, lot size, and quantity freeze limits will be available in contract files one day prior to ex-date
Important Dates
- Circular Date: November 3, 2025
- Ex-Date/Effective Date: November 26, 2025
- Revised Contract Files Available: November 25, 2025 (one day prior to ex-date)
Impact Assessment
Market Impact: High - All existing F&O positions in HDFCAMC will be adjusted with an adjustment factor of 2 due to the 1:1 bonus ratio. This will affect all open futures and options contracts.
Operational Impact: Members must ensure their trading systems are updated with new contract specifications before market opening on November 26, 2025. Failure to update systems may result in trading errors or position mismatches.
Position Impact: Existing positions will be adjusted by the Clearing Corporation using their specified methodology. Traders should be aware that strike prices will appear in decimal format after rounding to nearest tick size.
Lot Size Impact: The market lot increases to 300, which may affect margin requirements and position limits for traders.
Impact Justification
Mandatory adjustment to all F&O contracts for HDFCAMC due to 1:1 bonus issue, affecting all traders with open positions and requiring system updates before ex-date.